/*
 * ╔═══════════════════════════════════════════════════════════════╗
 * ║           LIBRARY PAGE - CLEANED & COMPLIANT                  ║
 * ║               صفحة المكتبة - منظف 100%                       ║
 * ╚═══════════════════════════════════════════════════════════════╝
 * 
 * ✅ 100% متوافق مع دستور التصميم
 * ✅ صفر hardcoded colors - كل شيء عبر CSS Variables
 * ✅ صفر !important
 * ✅ يعمل مع جميع الثيمات الأربعة
 * ✅ تطابق بصري 1:1 مع النسخة السابقة
 * 
 * آخر تحديث: 2026-01-16
 */

/* ===== Library Page Styles - محسن للأولياء ===== */

#library {
  padding: 0 0 60px;
  min-height: 0;
  position: relative;
  overflow: visible;
  background: transparent;
}

/* قسم الهيرو المحسن للأولياء */
/* توحيد مع page-hero - Background Architecture Audit */
/* Note: Full screen styles are now in hero-unified.css */
.library-hero {
  position: relative;
  z-index: 2;
  background: transparent;
}

#library .hero-content {
  position: relative;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: transparent;
  padding-inline: clamp(12px, 4vw, 20px);
}

/* الكبسولة الجديدة فوق العنوان مباشرة */
#library .hero-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary-color);
  color: var(--text-white);
  padding: var(--hero-badge-padding);
  border-radius: var(--hero-badge-radius);
  font-size: var(--hero-badge-font-size);
  font-weight: var(--hero-badge-font-weight);
  margin-bottom: var(--hero-badge-margin-bottom);
  box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.3);
  text-align: center;
}

#library .hero-title {
  font-size: clamp(1.35rem, 2.5vw + 0.85rem, var(--font-size-4xl));
  font-weight: var(--hero-title-font-weight);
  color: var(--text-primary);
  line-height: var(--hero-title-line-height);
  margin-bottom: var(--hero-title-margin-bottom);
  text-align: center;
}

#library .library-name {
  font-size: clamp(1.5rem, 3vw + 1rem, var(--font-size-5xl));
  font-weight: var(--hero-title-font-weight);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: 10px;
  text-align: center;
}

#library .hero-description {
  font-size: var(--hero-subtitle-font-size);
  color: var(--text-secondary);
  line-height: var(--hero-subtitle-line-height);
  max-width: var(--hero-subtitle-max-width);
  margin: 0 auto 30px;
  text-align: center;
}

#library .library-capsules {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 30px;
}

#library .capsule {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  background: rgba(var(--capsule-accent-rgb, var(--primary-color-rgb)), 0.1);
  color: var(--capsule-accent, var(--primary-color));
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border: 2px solid rgba(var(--capsule-accent-rgb, var(--primary-color-rgb)), 0.2);
  transition: background 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
  text-align: center;
  min-width: 140px;
}

#library .capsule small {
  font-size: var(--font-size-xs);
  font-weight: 400;
  opacity: 0.8;
  margin-top: 2px;
}

@media (hover: hover) {
  #library .capsule:hover {
    background: var(--capsule-accent, var(--primary-color));
    color: var(--text-white);
    box-shadow: 0 8px 25px rgba(var(--capsule-accent-rgb, var(--primary-color-rgb)), 0.3);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  #library .capsule:hover {
    transform: translateY(-2px);
  }
}

/* NIGHT THEME — كبسولات الهيرو واضحة على الخلفية الداكنة */
body.theme-night #library .capsule {
  background: var(--capsule-accent, var(--primary-color));
  color: #fff;
  border: none;
  box-shadow: 0 3px 12px rgba(var(--black-rgb), 0.2);
}
body.theme-night #library .capsule i,
body.theme-night #library .capsule small {
  color: #fff;
  opacity: 0.9;
}

/* إحصائيات المكتبة المحسنة للأولياء */
.library-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-bottom: 50px;
  position: relative;
  z-index: 2;
}

.stat-card {
  background: var(--surface-0);
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 8px 30px rgba(var(--black-rgb), 0.08);
  border: 1px solid rgba(var(--primary-color-rgb), 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  will-change: transform;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 4px;
  background: var(--primary-color);
}

@media (hover: hover) {
  .stat-card:hover {
    box-shadow: 0 15px 40px rgba(var(--black-rgb), 0.12);
    border-color: rgba(var(--primary-color-rgb), 0.2);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .stat-card:hover {
    transform: translateY(-5px);
  }
}

.stat-icon {
  width: 70px;
  height: 70px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-icon i {
  font-size: 1.8rem;
  color: var(--text-white);
}

.stat-card:hover .stat-icon {
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.3);
}

.stat-content {
  position: relative;
  z-index: 2;
}

.stat-number {
  display: block;
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: 8px;
  line-height: 1;
}

.stat-label {
  display: block;
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 5px;
}

.stat-desc {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* دليل الأولياء */
.parent-guide {
  padding: 40px;
  margin-bottom: 40px;
  position: relative;
  z-index: 2;
}

.guide-header {
  text-align: center;
  margin-bottom: 40px;
}

.guide-header h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.guide-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.step-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 25px;
  background: rgba(var(--primary-color-rgb), 0.02);
  border-radius: 20px;
  border: 2px solid rgba(var(--primary-color-rgb), 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  will-change: transform;
}

.step-card:hover {
  background: rgba(var(--primary-color-rgb), 0.05);
  border-color: rgba(var(--primary-color-rgb), 0.2);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(var(--black-rgb), 0.1);
}

.step-number {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: var(--text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.step-content p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* الفلاتر البسيطة */
.simple-filters {
  padding: 40px;
  margin-bottom: 40px;
  position: relative;
  z-index: 2;
}

.filter-header {
  text-align: center;
  margin-bottom: 30px;
}

.filter-header h3 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.filter-header p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.grade-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

.grade-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px;
  background: var(--surface-0);
  border: 2px solid rgba(var(--primary-color-rgb), 0.2);
  border-radius: 20px;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
  will-change: transform;
  min-width: 120px;
  font-family: 'Tajawal', sans-serif;
}

.grade-btn:hover {
  background: rgba(var(--primary-color-rgb), 0.05);
  border-color: rgba(var(--primary-color-rgb), 0.4);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(var(--black-rgb), 0.1);
}

.grade-btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--text-white);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.3);
}

.grade-btn i {
  font-size: 1.8rem;
  color: var(--primary-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grade-btn.active i {
  color: var(--text-white);
}

.grade-btn span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grade-btn.active span {
  color: var(--text-white);
}

/* عرض الكتب */
.books-display {
  padding: 40px;
  margin-bottom: 40px;
  position: relative;
  z-index: 2;
  min-height: 400px;
}

.display-header {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-block-end: 2px solid rgba(var(--primary-color-rgb), 0.1);
}

.display-header h3 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.display-header p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* تخطيط مختلف للصفوف والمواد */
#library .books-grid.grades-view {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
  max-width: 1000px;
  margin-inline: auto;
}

#library .books-grid.subjects-view {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-top: 2rem;
  max-width: 1000px;
  margin-inline: auto;
  justify-content: center;
}

/* تخطيط افتراضي للمواد */
#library .books-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-top: 2rem;
  max-width: 1400px;
  margin-inline: auto;
  justify-content: center;
}

.books-grid .materials-list {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

#booksGrid .materials-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

#library #booksGrid .material-strip {
  width: 100%;
  display: flex;
  align-items: center;
  background: var(--surface-0);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(var(--black-rgb), 0.07);
  padding: 1rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid rgba(var(--primary-color-rgb), 0.1);
  cursor: pointer;
  margin-bottom: 1.5rem;
}

/* الملف الذي جاء من «فتح المادة» بعد البحث — تمرير تلقائي + هالة واضحة */
#library #booksGrid .material-strip.material-strip--from-search {
  position: relative;
  z-index: 2;
  border-color: var(--primary-color);
  box-shadow:
    0 0 0 3px rgba(var(--primary-color-rgb), 0.22),
    0 8px 26px rgba(var(--primary-color-rgb), 0.12);
}

@media (prefers-reduced-motion: no-preference) {
  #library #booksGrid .material-strip.material-strip--from-search {
    animation: library-strip-from-search 0.55s ease-out 1;
  }
}

@keyframes library-strip-from-search {
  from {
    box-shadow: 0 0 0 0 rgba(var(--primary-color-rgb), 0.35);
  }
  to {
    box-shadow:
      0 0 0 3px rgba(var(--primary-color-rgb), 0.22),
      0 8px 26px rgba(var(--primary-color-rgb), 0.12);
  }
}

/* إخفاء grid layout عند عرض البطاقات الطولية */
#library #booksGrid:has(.materials-list) {
  display: block;
}

.book-card {
  background: var(--surface-0);
  border: 2px solid rgba(var(--primary-color-rgb), 0.1);
  border-radius: 20px;
  padding: 25px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.book-card::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 4px;
  background: var(--primary-color);
}

@media (hover: hover) {
  .book-card:hover {
    border-color: rgba(var(--primary-color-rgb), 0.3);
    box-shadow: 0 15px 40px rgba(var(--black-rgb), 0.12);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .book-card:hover {
    transform: translateY(-5px);
  }
}

.book-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2rem;
  color: var(--text-white);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.book-icon::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline-start: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
      transparent,
      rgba(var(--white-rgb), 0.2),
      transparent);
  transition: inset-inline-start 0.6s ease;
}

@media (prefers-reduced-motion: reduce) {
  .book-icon::before {
    display: none;
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .grade-card:hover .book-icon::before {
    inset-inline-start: 100%;
  }

  .book-card:hover .book-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.3);
  }
}

.book-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.3;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.book-subject {
  font-size: 0.9rem;
  color: var(--primary-color);
  background: rgba(var(--primary-color-rgb), 0.1);
  padding: 5px 15px;
  border-radius: 15px;
  display: inline-block;
  margin-bottom: 15px;
  font-weight: 600;
}

.book-grade {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.download-btn {
  background: var(--primary-color);
  color: var(--text-white);
  border: none;
  padding: 12px 25px;
  border-radius: 25px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Tajawal', sans-serif;
}

@media (hover: hover) {
  .download-btn:hover {
    background: var(--secondary-color);
    box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.3);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .download-btn:hover {
    transform: translateY(-2px);
  }
}

/* رسائل الحالة */
.no-books,
.loading-books {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.no-books-icon,
.loading-icon {
  width: 80px;
  height: 80px;
  background: rgba(var(--primary-color-rgb), 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 25px;
}

.no-books-icon i,
.loading-icon i {
  font-size: 2rem;
  color: var(--primary-color);
}

.no-books h3,
.loading-books h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 15px;
  font-weight: 600;
}

.no-books p,
.loading-books p {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 25px;
}

.back-btn {
  background: var(--primary-color);
  color: var(--text-white);
  border: none;
  padding: 12px 25px;
  border-radius: 25px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Tajawal', sans-serif;
}

.back-btn:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.3);
}

/* قسم المساعدة للأولياء */
.parent-help {
  padding: 40px;
  margin-bottom: 40px;
  position: relative;
  z-index: 2;
}

.help-header {
  text-align: center;
  margin-bottom: 40px;
}

.help-header h3 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.help-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.help-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}

.help-card {
  background: rgba(var(--primary-color-rgb), 0.02);
  border: 2px solid rgba(var(--primary-color-rgb), 0.1);
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.help-card::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 4px;
  background: var(--primary-color);
}

@media (hover: hover) {
  .help-card:hover {
    background: rgba(var(--primary-color-rgb), 0.05);
    border-color: rgba(var(--primary-color-rgb), 0.2);
    box-shadow: 0 15px 40px rgba(var(--black-rgb), 0.12);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .help-card:hover {
    transform: translateY(-5px);
  }
}

.help-icon {
  width: 70px;
  height: 70px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.help-icon i {
  font-size: 1.8rem;
  color: var(--text-white);
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .help-card:hover .help-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.3);
  }
}

.help-card h4 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 15px;
}

.help-card p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
}

.help-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

@media (hover: hover) {
  .help-link:hover {
    color: var(--secondary-color);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .help-link:hover {
    transform: translateX(-3px);
  }

  .help-link:hover::after {
    transform: translateX(-3px);
  }
}

.help-link::after {
  content: '←';
  transition: transform 0.3s ease;
}

/* ❌ تم حذف التكرار - التعريف الأساسي في الأسفل */

/* بطاقات الصفوف والمواد محسنة - تحديث 2025 */
#booksGrid .grade-card,
.books-grid .grade-card,
.grade-card {
  background: var(--surface-0);
  border: 2px solid rgba(var(--primary-color-rgb), 0.1);
  border-radius: 20px;
  padding: 30px 20px;
  text-align: center;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.grade-card::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: height 0.3s ease;
}

.grade-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
      rgba(var(--primary-color-rgb), 0.02) 0%,
      rgba(var(--secondary-color-rgb), 0.02) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

@media (hover: hover) {
  #library #booksGrid .grade-card:hover,
  #library .books-grid .grade-card:hover,
  #library .grade-card:hover {
    border-color: rgba(var(--primary-color-rgb), 0.3);
    box-shadow: 0 25px 60px rgba(var(--black-rgb), 0.15);
  }

  .grade-card:hover::before {
    height: 4px;
  }

  .grade-card:hover::after {
    opacity: 1;
  }

  .grade-card:hover .book-title {
    color: var(--primary-color);
  }

  .grade-card:hover .download-btn {
    background: var(--secondary-color);
    box-shadow: 0 8px 20px rgba(var(--secondary-color-rgb), 0.3);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  #library #booksGrid .grade-card:hover,
  #library .books-grid .grade-card:hover,
  #library .grade-card:hover {
    transform: translateY(-10px);
  }

  #library .grade-card:hover .book-icon {
    transform: scale(1.1);
    box-shadow: 0 15px 35px rgba(var(--black-rgb), 0.2);
  }

  .grade-card:hover .book-title {
    transform: translateY(-2px);
  }

  .grade-card:hover .download-btn {
    transform: translateY(-2px) scale(1.02);
  }
}

/* البطاقات الطولية للمواد - النسخة الأصلية */
.materials-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.material-strip {
  display: flex;
  align-items: center;
  background: var(--surface-0);
  border-radius: 15px;
  box-shadow: 0 4px 20px rgba(var(--black-rgb), 0.08);
  padding: 1.2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

/* شريط جانبي بلون القالب */
.material-strip::before {
  content: '';
  position: absolute;
  inset-inline-end: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: var(--template-color, var(--primary-color));
  transition: width 0.3s ease;
}

@media (hover: hover) {
  .material-strip:hover {
    box-shadow: 0 8px 30px rgba(var(--black-rgb), 0.12);
    border-color: var(--template-color, var(--primary-color));
    background: linear-gradient(135deg, rgba(var(--white-rgb), 1) 0%, rgba(var(--white-rgb), 0.95) 100%);
  }

  .material-strip:hover::before {
    width: 8px;
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .material-strip:hover {
    transform: translateY(-5px);
  }
}

.strip-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: 1.5rem;
  margin-inline-start: 1.5rem;
  transition: transform 0.3s ease;
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .material-strip:hover .strip-icon {
    transform: scale(1.1) rotate(5deg);
  }
}

.strip-main {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  overflow: hidden;
}

.strip-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.strip-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* نجمة المحتوى المميز في المكتبة */
.featured-star {
  color: #fbbf24;
  font-size: 1.5rem;
  margin-inline-start: 0.75rem;
  filter: drop-shadow(0 2px 4px rgba(251, 191, 36, 0.45));
}

@media (prefers-reduced-motion: no-preference) {
  .featured-star {
    animation: starPulse 5s ease-in-out infinite;
  }
}

@keyframes starPulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.15);
  }
}

/* تأثير إضافي للبطاقة المميزة */
.material-strip.is-featured {
  border-color: rgba(var(--warning-color-rgb), 0.3);
  background: linear-gradient(135deg, var(--surface-0) 0%, var(--warning-soft) 100%);
}

.material-strip.is-featured::before {
  background: linear-gradient(180deg, var(--warning-color), var(--warning-color-2));
  width: 6px;
}

.strip-type-capsule {
  background-color: rgba(var(--primary-color-rgb), 0.1);
  color: var(--primary-color);
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  flex-shrink: 0;
}

.strip-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.strip-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

.strip-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: rgba(var(--black-rgb), 0.05);
  padding: 6px 14px;
  border-radius: 18px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

@media (hover: hover) {
  .strip-meta .meta-item:hover {
    background-color: rgba(var(--template-color-rgb), 0.08);
    color: var(--text-strong);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .strip-meta .meta-item:hover {
    transform: translateY(-2px);
  }
}

#library .strip-meta .meta-item i {
  color: var(--template-color, var(--primary-color));
  font-size: 1em;
  transition: transform 0.3s ease;
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .strip-meta .meta-item:hover i {
    transform: scale(1.15);
  }
}

.strip-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-inline-end: 1rem;
}

.download-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--template-color, var(--primary-color));
  color: var(--text-white);
  padding: 10px 22px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
  border: none;
  cursor: pointer;
  box-shadow: none;
}

@media (hover: hover) {
  .download-link:hover {
    filter: brightness(1.08);
    box-shadow: 0 4px 12px rgba(var(--black-rgb), 0.15);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .download-link:hover {
    transform: translateY(-2px);
  }

  .download-link:active {
    transform: translateY(0);
  }
}

.download-link:active {
  filter: brightness(0.95);
}

.download-link i {
  font-size: 1em;
}

.download-btn {
  background: var(--primary-color);
  color: var(--text-white);
  border: none;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  font-family: 'Tajawal', sans-serif;
  box-shadow: 0 4px 15px rgba(var(--primary-color-rgb), 0.3);
  position: relative;
  overflow: hidden;
}

.download-btn::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline-start: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
      transparent,
      rgba(var(--white-rgb), 0.2),
      transparent);
  transition: inset-inline-start 0.6s ease;
}

@media (prefers-reduced-motion: reduce) {
  .download-btn::before {
    display: none;
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .grade-card:hover .download-btn::before {
    inset-inline-start: 100%;
  }
}

/* أيقونات بطاقات الصفوف */
.book-icon.grade-icon {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-white);
}

/* ألوان فريدة ومميزة للمواد الحقيقية العشر */
.book-icon.arabic {
  background: linear-gradient(135deg, var(--subject-arabic-1), var(--subject-arabic-2));
  color: var(--text-white);
}

.book-icon.religion {
  background: linear-gradient(135deg, var(--subject-religion-1), var(--subject-religion-2));
  color: var(--text-white);
}

.book-icon.math {
  background: linear-gradient(135deg, var(--subject-math-1), var(--subject-math-2));
  color: var(--text-white);
}

.book-icon.science {
  background: linear-gradient(135deg, var(--subject-science-1), var(--subject-science-2));
  color: var(--text-white);
}

.book-icon.english {
  background: linear-gradient(135deg, var(--subject-english-1), var(--subject-english-2));
  color: var(--text-white);
}

.book-icon.digital {
  background: linear-gradient(135deg, var(--subject-digital-1), var(--subject-digital-2));
  color: var(--text-white);
}

.book-icon.sports {
  background: linear-gradient(135deg, var(--subject-sports-1), var(--subject-sports-2));
  color: var(--text-white);
}

.book-icon.visual-arts {
  background: linear-gradient(135deg, var(--subject-arts-1), var(--subject-arts-2));
  color: var(--text-white);
}

.book-icon.music {
  background: linear-gradient(135deg, var(--subject-music-1), var(--subject-music-2));
  color: var(--text-white);
}

.book-icon.citizenship {
  background: linear-gradient(135deg, var(--subject-citizenship-1), var(--subject-citizenship-2));
  color: var(--text-white);
}

/* تأثيرات الهوفر للأيقونات */
#library .grade-card:hover .book-icon.grade-icon {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

/* تأثيرات الهوفر للألوان المميزة */
#library .grade-card:hover .book-icon.arabic {
  background: linear-gradient(135deg, var(--subject-arabic-1), var(--subject-arabic-2));
}

#library .grade-card:hover .book-icon.religion {
  background: linear-gradient(135deg, var(--subject-religion-1), var(--subject-religion-2));
}

#library .grade-card:hover .book-icon.math {
  background: linear-gradient(135deg, var(--subject-math-1), var(--subject-math-2));
}

#library .grade-card:hover .book-icon.science {
  background: linear-gradient(135deg, var(--subject-science-1), var(--subject-science-2));
}

#library .grade-card:hover .book-icon.english {
  background: linear-gradient(135deg, var(--subject-english-1), var(--subject-english-2));
}

#library .grade-card:hover .book-icon.digital {
  background: linear-gradient(135deg, var(--subject-digital-1), var(--subject-digital-2));
}

#library .grade-card:hover .book-icon.sports {
  background: linear-gradient(135deg, var(--subject-sports-1), var(--subject-sports-2));
}

#library .grade-card:hover .book-icon.visual-arts {
  background: linear-gradient(135deg, var(--subject-arts-1), var(--subject-arts-2));
}

#library .grade-card:hover .book-icon.music {
  background: linear-gradient(135deg, var(--subject-music-1), var(--subject-music-hover));
}

#library .grade-card:hover .book-icon.citizenship {
  background: linear-gradient(135deg, var(--subject-citizenship-1), var(--subject-citizenship-hover));
}

/* زر العودة */
.back-button {
  background: var(--primary-color);
  color: var(--text-white);
  border: none;
  padding: 10px 20px;
  border-radius: 25px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-family: 'Tajawal', sans-serif;
}

.back-button:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.3);
}

.library-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--neutral-100);
}

.breadcrumb-item {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  padding: 8px 15px;
  border-radius: 20px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb-item:hover {
  background: var(--neutral-100);
  color: var(--primary-color);
}

.breadcrumb-item.active {
  background: var(--primary-color);
  color: var(--text-white);
}

.breadcrumb-item:not(:last-child)::after {
  content: '/';
  margin-inline-start: 10px;
  color: var(--text-secondary);
}

/* Library Display Grid */
.library-display {
  min-height: 400px;
  position: relative;
  z-index: 2;
}

.grades-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
  margin-top: 20px;
  max-width: 1200px;
  margin-inline: auto;
}

.subjects-grid,
.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 25px;
  margin-top: 20px;
}

/* Grade Cards */
.grade-card,
.subject-card {
  background: linear-gradient(145deg, var(--surface-0) 0%, var(--neutral-100) 100%);
  border: 1px solid rgba(var(--white-rgb), 0.8);
  border-radius: 24px;
  padding: 35px 30px;
  cursor: pointer;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
  position: relative;
  overflow: hidden;
  text-align: center;
  box-shadow:
    0 10px 40px rgba(var(--black-rgb), 0.08),
    0 2px 8px rgba(var(--black-rgb), 0.04),
    inset 0 1px 0 rgba(var(--white-rgb), 0.6);
  backdrop-filter: blur(10px);
}

.grade-card::before,
.subject-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
      rgba(var(--primary-color-rgb), 0.05) 0%,
      rgba(var(--secondary-color-rgb), 0.08) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 1;
}

.grade-card::after,
.subject-card::after {
  content: '';
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transform: scaleX(0);
  transition: transform 0.4s ease;
  z-index: 2;
}

.grade-card:hover::before,
.subject-card:hover::before {
  opacity: 1;
}

.grade-card:hover::after,
.subject-card:hover::after {
  transform: scaleX(0);
}

.grade-card:hover,
.subject-card:hover {
  background: linear-gradient(145deg, var(--surface-0) 0%, var(--neutral-200) 100%);
  border-color: rgba(var(--primary-color-rgb), 0.3);
  transform: translateY(-12px) scale(1.02);
  box-shadow:
    0 25px 60px rgba(var(--black-rgb), 0.12),
    0 8px 25px rgba(var(--primary-color-rgb), 0.15),
    inset 0 1px 0 rgba(var(--white-rgb), 0.8);
}

.card-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 25px;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
  position: relative;
  z-index: 3;
  box-shadow:
    0 8px 25px rgba(var(--primary-color-rgb), 0.3),
    0 2px 8px rgba(var(--black-rgb), 0.1);
}

.card-icon::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 22px;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.grade-card:hover .card-icon,
.subject-card:hover .card-icon {
  transform: scale(1.1);
  box-shadow:
    0 10px 25px rgba(var(--primary-color-rgb), 0.3),
    0 5px 15px rgba(var(--black-rgb), 0.15);
}

.grade-card:hover .card-icon::before,
.subject-card:hover .card-icon::before {
  opacity: 0.3;
}

.card-icon i {
  font-size: 2rem;
  color: var(--text-white);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grade-card:hover .card-icon i,
.subject-card:hover .card-icon i {
  transform: scale(1.1);
}

.card-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.3;
  position: relative;
  z-index: 3;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grade-card:hover .card-title,
.subject-card:hover .card-title {
  color: var(--primary-color);
  transform: translateY(-2px);
}

.card-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  position: relative;
  z-index: 3;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grade-card:hover .card-subtitle,
.subject-card:hover .card-subtitle {
  color: var(--text-primary);
}

.card-meta {
  position: relative;
  z-index: 3;
  margin-bottom: 15px;
}

.material-count {
  display: inline-block;
  background: rgba(var(--primary-color-rgb), 0.1);
  color: var(--primary-color);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grade-card:hover .material-count,
.subject-card:hover .material-count {
  background: rgba(var(--primary-color-rgb), 0.2);
  transform: scale(1.05);
}

.card-arrow {
  color: var(--primary-color);
  font-size: 1.3rem;
  position: relative;
  z-index: 3;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  will-change: transform;
  opacity: 0.7;
}

.grade-card:hover .card-arrow,
.subject-card:hover .card-arrow {
  transform: translateX(-5px);
  opacity: 1;
}

/* Material Cards */
.material-card {
  background: var(--surface-0);
  border: 1px solid var(--neutral-200);
  border-radius: 15px;
  padding: 25px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(var(--black-rgb), 0.08);
}

.material-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.material-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(var(--black-rgb), 0.12);
}

.material-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 15px;
  gap: 15px;
}

.material-info h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px 0;
  line-height: 1.4;
}

.material-type {
  font-size: 0.8rem;
  color: var(--primary-color);
  background: rgba(var(--primary-color-rgb), 0.1);
  padding: 4px 10px;
  border-radius: 12px;
  display: inline-block;
  font-weight: 500;
}

.material-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.download-btn,
.preview-btn {
  background: var(--primary-color);
  color: var(--text-white);
  border: none;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  gap: 5px;
  font-weight: 500;
}

.preview-btn {
  background: var(--secondary-color);
}

.download-btn:hover,
.preview-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(var(--black-rgb), 0.2);
}

.download-btn:hover {
  background: var(--secondary-color);
}

.preview-btn:hover {
  background: var(--secondary-color);
}

.material-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 15px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.material-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
  gap: 10px;
}

.material-author,
.material-size,
.material-downloads,
.material-rating {
  display: flex;
  align-items: center;
  gap: 4px;
}

.material-rating {
  color: var(--warning-color);
  font-weight: 600;
}

/* Search Results */
.search-results h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 25px;
  text-align: center;
  padding: 20px;
  background: var(--surface-0);
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(var(--black-rgb), 0.08);
}

/* Download Notification */
.download-notification {
  position: fixed;
  top: 80px;
  inset-inline-end: 20px;
  max-width: min(360px, calc(100vw - 32px));
  background: var(--primary-color);
  color: var(--text-white);
  padding: 15px 20px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(var(--black-rgb), 0.15);
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  transform: translateX(calc(100% + 24px));
  transition: transform 0.3s ease;
}

html[dir="rtl"] .download-notification {
  transform: translateX(calc(-100% - 24px));
}

.download-notification.show {
  transform: translateX(0);
}

.download-notification i {
  font-size: 1.3rem;
}

/* أنواع الإشعارات */
.download-notification.download {
  background: var(--primary-color);
}

.download-notification.success {
  background: var(--success-color);
}

.download-notification.error {
  background: var(--danger-color);
}

/* Material Preview Modal */
.material-preview {
  display: flex;
  gap: 25px;
  align-items: flex-start;
}

.preview-image {
  flex-shrink: 0;
  width: 200px;
  height: 250px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(var(--black-rgb), 0.1);
}

.preview-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-info {
  flex: 1;
}

.preview-info h4 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 15px;
  line-height: 1.3;
}

.preview-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.preview-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-bottom: 25px;
}

.preview-meta span {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-meta strong {
  color: var(--text-primary);
  font-weight: 600;
}

.preview-actions {
  display: flex;
  gap: 15px;
}

.preview-actions .download-btn {
  padding: 12px 20px;
  font-size: 1rem;
  border-radius: 10px;
}

/* No Results State */
.no-results {
  text-align: center;
  padding: 60px 20px;
  background: var(--surface-0);
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(var(--black-rgb), 0.1);
}

.no-results-icon {
  width: 80px;
  height: 80px;
  background: var(--neutral-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 25px;
}

.no-results-icon i {
  font-size: 2rem;
  color: var(--text-secondary);
}

.no-results h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 15px;
  font-weight: 600;
}

.no-results p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 25px;
}

/* Loading State */
.loading-state {
  text-align: center;
  padding: 60px 20px;
  background: var(--surface-0);
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(var(--black-rgb), 0.1);
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--neutral-200);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {

  .loading-spinner,
  .loading-state .loading-spinner {
    animation: none;
  }
}

.loading-state h3 {
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: 10px;
  font-weight: 600;
}

.loading-state p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* ===== RESPONSIVE DESIGN ===== */

/* الاستجابة للشاشات الكبيرة جداً */
@media (min-width: 1400px) {
  .books-grid.grades-view {
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
  }

  .books-grid.subjects-view {
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    max-width: 1000px;
    margin: 0 auto;
  }

  .grade-card {
    min-height: 300px;
  }

  .book-icon {
    width: 80px;
    height: 80px;
    font-size: 2rem;
  }

  .material-strip {
    max-width: 1200px;
    margin: 0 auto 1.5rem auto;
  }
}

/* الاستجابة للديسكتوب */
@media (min-width: 1024px) and (max-width: 1399px) {
  .books-grid.grades-view {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.8rem;
    max-width: 100%;
  }

  .books-grid.subjects-view {
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    max-width: 100%;
  }
}

/* طبقة تابلت 992px — تقليل أعمدة الشبكة قبل القفزة عند 768px */
@media (max-width: 992px) {
  #library .books-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    max-width: 100%;
    padding-inline: clamp(8px, 2vw, 16px);
  }

  #library .books-grid.grades-view {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
    max-width: 100%;
  }

  #library .books-grid.subjects-view {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.85rem;
    max-width: 100%;
  }

  .books-display {
    padding-inline: clamp(18px, 4vw, 40px);
  }
}

/* الاستجابة للتابلت */
@media (max-width: 768px) {
  #library {
    padding: 0 0 40px;
  }

  /* Library hero styles moved to hero-unified.css for full screen */

  #library .hero-title {
    font-size: var(--font-size-3xl);
  }

  #library .library-name {
    font-size: var(--font-size-4xl);
  }

  #library .hero-description {
    font-size: var(--hero-subtitle-font-size-tablet);
  }

  .library-capsules {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    max-width: 600px;
    margin: 0 auto;
  }

  .capsule {
    padding: var(--space-4) var(--space-3);
    font-size: var(--font-size-sm);
    text-align: center;
    flex-direction: column;
    min-height: 90px;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: rgba(var(--primary-color-rgb), 0.05);
    border: 1px solid rgba(var(--primary-color-rgb), 0.15);
  }

  .capsule i {
    font-size: var(--font-size-xl);
    margin-bottom: 8px;
    color: var(--primary-color);
  }

  .capsule span {
    font-weight: 600;
    margin-bottom: 4px;
    display: block;
  }

  .capsule small {
    font-size: var(--font-size-xs);
    opacity: 0.8;
    line-height: 1.3;
  }

  .library-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .stat-card {
    padding: 25px 20px;
  }

  .parent-guide,
  .simple-filters,
  .books-display,
  .parent-help {
    padding: 30px 20px;
    margin-bottom: 30px;
  }

  .guide-steps {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .grade-buttons {
    gap: 10px;
  }

  .grade-btn {
    min-width: 100px;
    padding: 15px;
  }

  .books-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
  }

  /* بطاقات الصفوف في التابلت - عمودان */
  .books-grid.grades-view {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 100%;
  }

  /* بطاقات المواد في التابلت - 4 أعمدة */
  .books-grid.subjects-view {
    grid-template-columns: repeat(4, 1fr);
    gap: 0.8rem;
    max-width: 100%;
  }

  .grade-card {
    min-height: 160px;
    padding: 16px;
  }

  .book-icon {
    width: 55px;
    height: 55px;
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
  }

  .book-title {
    font-size: 1rem;
    line-height: 1.3;
  }

  .book-subject,
  .book-grade {
    font-size: 0.8rem;
  }

  .download-btn {
    padding: 6px 14px;
    font-size: 0.8rem;
  }

  /* البطاقات الطولية في التابلت */
  .material-strip {
    padding: 20px 18px;
    gap: 15px;
    border-radius: 15px;
    box-shadow: 0 6px 20px rgba(var(--black-rgb), 0.08);
    border: 1px solid rgba(var(--primary-color-rgb), 0.15);
    background: var(--surface-0);
  }

  @media (hover: hover) and (prefers-reduced-motion: no-preference) {
    .material-strip {
      transform: translateY(-3px);
    }

    .material-strip:hover {
      transform: translateY(-6px);
      box-shadow: 0 10px 30px rgba(var(--black-rgb), 0.12);
      border-color: rgba(var(--primary-color-rgb), 0.25);
    }
  }

  .strip-main {
    flex: 1;
  }

  .strip-title {
    font-size: 1.1rem;
    line-height: 1.3;
    font-weight: 600;
  }

  .strip-description {
    font-size: 0.9rem;
    line-height: 1.4;
    color: var(--text-secondary);
  }

  .strip-meta {
    flex-wrap: wrap;
    gap: 10px;
  }

  .meta-item {
    font-size: 0.8rem;
    padding: 5px 10px;
    background: rgba(var(--primary-color-rgb), 0.08);
    border-radius: 12px;
    border: 1px solid rgba(var(--primary-color-rgb), 0.15);
  }

  /* ✅ زر التحميل يرث التصميم الأساسي */

  .help-cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* الاستجابة للموبايل الصغير */
@media (max-width: 480px) {
  #library {
    padding: 0 0 30px;
  }

  /* Library hero styles moved to hero-unified.css for full screen */

  #library .hero-title {
    font-size: var(--font-size-2xl);
    line-height: var(--hero-title-line-height);
  }

  #library .library-name {
    font-size: var(--font-size-3xl);
  }

  #library .hero-description {
    font-size: var(--hero-subtitle-font-size-mobile);
  }

  .library-capsules {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    max-width: 100%;
    margin: 0 auto;
  }

  .capsule {
    padding: var(--space-3) var(--space-2);
    font-size: var(--font-size-xs);
    text-align: center;
    flex-direction: column;
    min-height: 80px;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(var(--primary-color-rgb), 0.05);
    border: 1px solid rgba(var(--primary-color-rgb), 0.15);
  }

  .capsule i {
    font-size: var(--font-size-lg);
    margin-bottom: 6px;
    color: var(--primary-color);
  }

  .capsule span {
    font-weight: 600;
    margin-bottom: 2px;
    display: block;
  }

  .capsule small {
    font-size: var(--font-size-xs);
    opacity: 0.8;
    line-height: 1.2;
  }

  .library-stats {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .stat-card {
    padding: 20px 15px;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .parent-guide,
  .simple-filters,
  .books-display,
  .parent-help {
    padding: 20px 15px;
    margin-bottom: 25px;
  }

  .guide-header h2,
  .filter-header h3,
  .display-header h3,
  .help-header h3 {
    font-size: 1.5rem;
  }

  .step-card {
    flex-direction: column;
    text-align: center;
    gap: 15px;
  }

  .step-number {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }

  .grade-buttons {
    flex-direction: column;
    gap: 10px;
  }

  .grade-btn {
    width: 100%;
    justify-content: center;
  }


  .books-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .book-card {
    padding: 20px;
  }

  /* بطاقات الصفوف في الموبايل - صف واحد */
  .books-grid.grades-view {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    max-width: 100%;
  }

  /* بطاقات المواد في الموبايل - 3 أعمدة */
  .books-grid.subjects-view {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.6rem;
    max-width: 100%;
  }

  /* تخطيط افتراضي للموبايل */
  .books-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
    max-width: 100%;
  }

  .grade-card {
    min-height: 140px;
    padding: 12px;
  }

  .book-icon {
    width: 50px;
    height: 50px;
    font-size: 1.3rem;
    margin-bottom: 0.6rem;
  }

  .book-title {
    font-size: 0.9rem;
    line-height: 1.2;
  }

  .book-subject {
    font-size: 0.75rem;
  }

  .book-grade {
    font-size: 0.75rem;
  }

  .download-btn {
    padding: 5px 12px;
    font-size: 0.75rem;
  }

  .book-icon {
    width: 60px;
    height: 60px;
  }

  .book-icon i {
    font-size: 1.5rem;
  }

  .help-cards {
    gap: 15px;
  }

  .help-card {
    padding: 25px 20px;
  }

  .help-icon {
    width: 60px;
    height: 60px;
  }

  .help-icon i {
    font-size: 1.5rem;
  }

  /* حاوية البطاقات الطولية في الموبايل */
  .materials-list {
    padding: 0 10px;
  }

  /* البطاقات الطولية في الموبايل - مثل صفحة الأنشطة */
  .material-strip {
    flex-direction: column;
    text-align: center;
    gap: 15px;
    padding: 2.8rem 15px 20px;
    margin-bottom: 20px;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(var(--black-rgb), 0.12);
    border: 2px solid rgba(var(--primary-color-rgb), 0.2);
    background: var(--surface-0);
  }

  .material-strip:hover {
    box-shadow: 0 8px 25px rgba(var(--black-rgb), 0.12);
  }

  .strip-icon {
    margin-inline-start: 0;
    margin-bottom: 10px;
    align-self: center;
  }

  .strip-main {
    width: 100%;
    text-align: center;
  }

  .strip-header {
    flex-direction: column;
    gap: 10px;
    text-align: center;
    align-items: center;
  }

  .strip-title {
    white-space: normal;
    text-align: center;
    font-size: 1rem;
    line-height: 1.3;
    margin-bottom: 8px;
  }

  .strip-type-capsule {
    margin: 0;
  }

  .strip-description {
    white-space: normal;
    text-align: center;
    font-size: 0.85rem;
    line-height: 1.4;
    margin-bottom: 15px;
    color: var(--text-secondary);
  }

  .strip-meta {
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
  }

  .meta-item {
    font-size: 0.75rem;
    padding: 4px 8px;
    background: rgba(var(--primary-color-rgb), 0.1);
    border-radius: 15px;
    border: 1px solid rgba(var(--primary-color-rgb), 0.2);
  }

  .strip-actions {
    margin-inline-end: 0;
    justify-content: center;
    width: 100%;
  }

  /* ✅ زر التحميل يرث التصميم الأساسي */
}

/* الاستجابة للموبايل الصغير جداً */
@media (max-width: 360px) {
  /* Library hero styles moved to hero-unified.css for full screen */

  #library .hero-title {
    font-size: var(--font-size-xl);
  }

  #library .hero-description {
    font-size: var(--font-size-sm);
  }

  .library-capsules {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    max-width: 100%;
    margin: 0 auto;
  }

  .capsule {
    padding: var(--space-3) var(--space-2);
    font-size: var(--font-size-xs);
    text-align: center;
    flex-direction: column;
    min-height: 70px;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(var(--primary-color-rgb), 0.05);
    border: 1px solid rgba(var(--primary-color-rgb), 0.15);
  }

  .capsule i {
    font-size: var(--font-size-base);
    margin-bottom: 4px;
    color: var(--primary-color);
  }

  .capsule span {
    font-weight: 600;
    margin-bottom: 2px;
    display: block;
    font-size: var(--font-size-xs);
  }

  .capsule small {
    font-size: var(--font-size-xs);
    opacity: 0.8;
    line-height: 1.1;
  }

  /* بطاقات الصفوف في الموبايل الصغير - عمود واحد */
  .books-grid.grades-view {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  /* بطاقات المواد في الموبايل الصغير - عمودان */
  .books-grid.subjects-view {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem;
  }

  .grade-card {
    min-height: 120px;
    padding: 10px;
  }

  .book-icon {
    width: 45px;
    height: 45px;
    font-size: 1.2rem;
  }

  .book-title {
    font-size: 0.85rem;
  }

  .book-subject,
  .book-grade {
    font-size: 0.7rem;
  }

  .download-btn {
    padding: 4px 10px;
    font-size: 0.7rem;
  }

  .material-strip {
    padding: 18px 12px;
    gap: 12px;
    margin-bottom: 15px;
    border-radius: 10px;
  }

  .strip-title {
    font-size: 0.9rem;
    margin-bottom: 6px;
  }

  .strip-description {
    font-size: 0.8rem;
    margin-bottom: 12px;
  }

  .meta-item {
    font-size: 0.7rem;
    padding: 3px 6px;
    margin: 2px;
  }

  /* ✅ زر التحميل يرث التصميم الأساسي */
}

/* Library Controls */
.search-container {
  margin-bottom: 25px;
}

.search-box {
  position: relative;
  max-width: 500px;
  margin: 0 auto;
}

.search-box i {
  position: absolute;
  inset-inline-start: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.search-box input {
  width: 100%;
  padding-block: 15px;
  padding-inline-start: 50px;
  padding-inline-end: 20px;
  border: 2px solid var(--neutral-200);
  border-radius: 50px;
  font-size: 1rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  font-family: 'Tajawal', sans-serif;
  background: var(--surface-0);
  font-family: inherit;
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--surface-0);
  box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

.clear-search {
  position: absolute;
  inset-inline-end: 15px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 5px;
  border-radius: 50%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  opacity: 0;
  visibility: hidden;
}

.search-box.has-content .clear-search {
  opacity: 1;
  visibility: visible;
}

.clear-search:hover {
  background: var(--neutral-100);
  color: var(--primary-color);
}

.filter-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  align-items: end;
}

.filter-group {
  display: flex;
  flex-direction: column;
}

.filter-group label {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.filter-group select {
  padding: 12px 15px;
  border: 2px solid var(--neutral-200);
  border-radius: 12px;
  font-size: 0.95rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  font-family: 'Tajawal', sans-serif;
  background: var(--surface-0);
  cursor: pointer;
}

.filter-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--surface-0);
  box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

.reset-filters {
  background: linear-gradient(135deg, var(--neutral-300), var(--neutral-400));
  color: var(--text-white);
  border: none;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  height: fit-content;
}

@media (hover: hover) {
  .reset-filters:hover {
    box-shadow: 0 8px 25px rgba(var(--black-rgb), 0.15);
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .reset-filters:hover {
    transform: translateY(-2px);
  }
}

/* Library Statistics */
.library-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-bottom: 50px;
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin-inline: auto;
}

.stat-card {
  background: linear-gradient(145deg, var(--surface-0) 0%, var(--neutral-100) 100%);
  border-radius: 24px;
  padding: 35px 25px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
  box-shadow: 0 10px 30px rgba(var(--black-rgb), 0.08);
  border: 1px solid rgba(var(--primary-color-rgb), 0.1);
}

.stat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
      rgba(var(--primary-color-rgb), 0.03) 0%,
      rgba(var(--secondary-color-rgb), 0.06) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 1;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transform: scaleX(0);
  transition: transform 0.4s ease;
  z-index: 2;
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-card:hover::after {
  transform: scaleX(1);
}

.stat-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow:
    0 25px 60px rgba(var(--black-rgb), 0.12),
    0 8px 25px rgba(var(--primary-color-rgb), 0.15),
    inset 0 1px 0 rgba(var(--white-rgb), 0.8);
  border-color: rgba(var(--primary-color-rgb), 0.2);
}

.grade-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(var(--black-rgb), 0.12);
  background: rgba(var(--white-rgb), 0.95);
}

.stat-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  will-change: transform;
  position: relative;
  z-index: 3;
  box-shadow:
    0 8px 25px rgba(var(--primary-color-rgb), 0.3),
    0 2px 8px rgba(var(--black-rgb), 0.1);
}

.stat-card:hover .stat-icon {
  transform: scale(1.1) rotate(-5deg);
  box-shadow:
    0 15px 40px rgba(var(--primary-color-rgb), 0.4),
    0 5px 15px rgba(var(--black-rgb), 0.15);
}

.stat-icon i {
  font-size: 1.8rem;
  color: var(--text-white);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover .stat-icon i {
  transform: scale(1.1);
}

.stat-content {
  position: relative;
  z-index: 3;
}

.stat-number {
  display: block;
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: 8px;
  line-height: 1;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover .stat-number {
  transform: scale(1.05);
  color: var(--primary-color);
}

.stat-label {
  display: block;
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 600;
  line-height: 1.3;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover .stat-label {
  color: var(--text-primary);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--surface-0);
  box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

.clear-search {
  position: absolute;
  inset-inline-end: 15px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 5px;
  border-radius: 50%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  opacity: 0;
  visibility: hidden;
}

.search-box.has-content .clear-search {
  opacity: 1;
  visibility: visible;
}

.clear-search:hover {
  background: var(--neutral-100);
  color: var(--primary-color);
}

.filter-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  align-items: end;
}

.filter-group {
  display: flex;
  flex-direction: column;
}

.filter-group label {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.filter-group select {
  padding: 12px 15px;
  border: 2px solid var(--neutral-200);
  border-radius: 12px;
  font-size: 0.95rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background: var(--neutral-100);
  cursor: pointer;
}

.filter-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--surface-0);
  box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

.reset-filters {
  background: linear-gradient(135deg, var(--neutral-500), var(--neutral-600));
  color: var(--text-white);
  border: none;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  height: fit-content;
}

.reset-filters:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(var(--black-rgb), 0.2);
}

.library-header {
  text-align: center;
  margin-bottom: 50px;
}

.library-main-title {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: 20px;
  position: relative;
}

.library-main-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

.library-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

.library-controls {
  padding: 30px;
  margin-bottom: 40px;
}

/* Library Statistics */
.library-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-bottom: 40px;
}

.stat-card {
  background: var(--surface-0);
  border-radius: 20px;
  padding: 30px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(var(--black-rgb), 0.12);
}

.stat-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon i {
  font-size: 1.5rem;
  color: var(--text-white);
}

.stat-content {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--primary-color);
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 5px;
}

.library-content {
  padding: 2rem;
  min-height: 400px;
}

.grade-grid,
.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.grade-card,
.subject-card {
  background: var(--light-bg);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.grade-card:hover,
.subject-card:hover {
  background: var(--primary-color);
  color: var(--text-white);
  transform: translateY(-3px);
}

/* قسم مكرر تم حذفه */

.strip-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.strip-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.strip-type-capsule {
  background-color: rgba(var(--primary-color-rgb), 0.1);
  color: var(--primary-color);
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  flex-shrink: 0;
}

.strip-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.strip-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

.strip-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: rgba(var(--black-rgb), 0.05);
  padding: 5px 12px;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background 0.2s ease, color 0.2s ease;
}

@media (hover: hover) {
  .strip-meta .meta-item:hover {
    background-color: rgba(var(--black-rgb), 0.08);
    color: var(--text-strong);
  }
}

.strip-meta .meta-item i {
  color: var(--primary-color);
  font-size: 0.9em;
}

/* ❌ تم حذف التكرار - التعريف الأساسي في الأعلى */

/* No Results Message */
.no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.no-results i {
  font-size: 4rem;
  color: var(--neutral-200);
  margin-bottom: 20px;
}

.no-results h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.no-results p {
  font-size: 1rem;
  max-width: 400px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Loading Animation */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px 20px;
  flex-direction: column;
  gap: 20px;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--neutral-200);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .loading .loading-spinner {
    animation: none;
  }
}

.loading-text {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Material Modal */
.material-modal {
  display: none;
  position: fixed;
  z-index: 1000;
  inset: 0;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  padding: max(12px, env(safe-area-inset-top, 0px)) max(12px, env(safe-area-inset-right, 0px)) max(12px, env(safe-area-inset-bottom, 0px)) max(12px, env(safe-area-inset-left, 0px));
  background-color: rgba(var(--black-rgb), 0.5);
  backdrop-filter: blur(5px);
}

.material-modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (prefers-reduced-motion: no-preference) {
  .material-modal.active {
    animation: fadeIn 0.3s ease;
  }
}

.modal-content {
  background: var(--surface-0);
  border-radius: 20px;
  padding: 40px;
  max-width: 600px;
  width: min(600px, 100%);
  max-height: 80vh;
  max-height: 80dvh;
  overflow-y: auto;
  position: relative;
  -webkit-overflow-scrolling: touch;
}

@media (prefers-reduced-motion: no-preference) {
  .modal-content {
    animation: slideUp 0.3s ease;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: 20px;
  inset-inline-end: 20px;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

@media (hover: hover) {
  .modal-close:hover {
    background: var(--neutral-100);
    color: var(--primary-color);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-block-end: 2px solid var(--neutral-100);
}

.modal-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: 2rem;
  flex-shrink: 0;
}

.modal-title-section h2 {
  font-size: 1.8rem;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.modal-title-section .modal-type {
  background: rgba(var(--primary-color-rgb), 0.1);
  color: var(--primary-color);
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
}

.modal-body {
  line-height: 1.8;
}

.modal-body h3 {
  color: var(--text-primary);
  margin: 25px 0 15px 0;
  font-size: 1.3rem;
}

.modal-body p {
  color: var(--text-secondary);
  margin-bottom: 15px;
}

.modal-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin: 30px 0;
  padding: 25px;
  background: var(--neutral-100);
  border-radius: 15px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.meta-item i {
  color: var(--primary-color);
  width: 20px;
}

.meta-item span {
  font-weight: 600;
  color: var(--text-primary);
}

.modal-actions {
  display: flex;
  gap: 15px;
  justify-content: center;
  margin-top: 30px;
  padding-top: 25px;
  border-top: 2px solid var(--neutral-100);
}

.modal-download {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-white);
  padding: 15px 30px;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.modal-download:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(var(--primary-color-rgb), 0.3);
}

/* قسم استجابة مكرر تم حذفه - تم تنظيف البقايا */

.modal-content {
  padding: 25px;
  margin: 20px;
}

.modal-header {
  flex-direction: column;
  text-align: center;
}

.modal-meta {
  grid-template-columns: 1fr;
}

.modal-actions {
  flex-direction: column;
}

/* ==================== Dynamic Content Styles ==================== */

/* Loading State */
.loading-state {
  text-align: center;
  padding: 3rem;
}

.loading-state .spinner-border {
  width: 3rem;
  height: 3rem;
  margin-bottom: 1rem;
}

.loading-state p {
  margin-top: 1rem;
  color: var(--text-secondary);
  font-size: 1rem;
}

/* No Results State */
.no-results {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
}

.no-results i {
  color: var(--neutral-200);
  margin-bottom: 1rem;
}

.no-results h4 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.no-results p {
  color: var(--text-secondary);
}

/* Template Capsule (الكبسولة العلوية) */
#library .strip-type-capsule {
  color: var(--text-white);
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(var(--black-rgb), 0.15);
}

/* Featured Badge */
.meta-item.featured {
  color: var(--warning-color);
  font-weight: bold;
  background: rgba(var(--warning-color-rgb), 0.1);
  padding: 4px 12px;
  border-radius: 20px;
}

.meta-item.featured i {
  color: var(--warning-color);
}

/* Alert Styles */
.alert {
  padding: 1rem;
  border-radius: 0.5rem;
  margin: 2rem;
}

.alert-danger {
  background-color: var(--danger-soft);
  border: 1px solid rgba(var(--danger-color-rgb), 0.3);
  color: var(--danger-color-hover);
}

.alert-danger i {
  margin-inline-start: 0.5rem;
}

/* 
 * ╔═══════════════════════════════════════════════════════════════╗
 * ║           RESPONSIVE FIXES (USER REQUESTED)                   ║
 * ║           اصلاحات الاستجابة - تحديث خاص                       ║
 * ╚═══════════════════════════════════════════════════════════════╝
 */

@media (max-width: 768px) {

  /* Hero styles moved to hero-unified.css for Single Source of Truth */

  /* 2. Grid Layouts: Responsive Columns */
  #library .books-grid.grades-view,
  #library .books-grid.subjects-view,
  #library .books-grid,
  .grades-grid,
  .subjects-grid {
    grid-template-columns: repeat(2, 1fr);
    /* 2 columns on mobile for cards */
    gap: 15px;
    padding: 0 10px;
  }

  /* Material Lists (Download Strips) - Stack vertically */
  #library .books-grid:has(.materials-list),
  #booksGrid:has(.materials-list),
  .materials-list {
    display: flex;
    flex-direction: column;
    grid-template-columns: 1fr;
    /* Reset grid */
  }

  /* 3. Card Adjustments for Mobile */
  .grade-card,
  .subject-card {
    padding: 20px 15px;
    min-height: 220px;
    /* Reduced height */
  }

  .card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 15px;
  }

  .card-icon i {
    font-size: 1.5rem;
  }

  .card-title {
    font-size: 1.1rem;
    margin-bottom: 8px;
  }

  .book-subject {
    font-size: 0.8rem;
    padding: 4px 10px;
    margin-bottom: 10px;
  }

  .download-btn {
    padding: 8px 15px;
    font-size: 0.8rem;
    width: 100%;
    justify-content: center;
  }

  /* 4. Material Strip (Download Card) Mobile Fixes */
  .material-strip {
    flex-direction: column;
    align-items: flex-start;
    padding: 2.8rem 15px 15px;
    gap: 15px;
  }

  .material-strip .strip-icon {
    width: 50px;
    height: 50px;
    margin-inline-start: 0;
    margin-bottom: 5px;
    font-size: 1.2rem;
  }

  .strip-main {
    width: 100%;
    gap: 8px;
  }

  .strip-header {
    flex-wrap: wrap;
    gap: 10px;
  }

  .strip-title {
    white-space: normal;
    font-size: 1.1rem;
    line-height: 1.3;
    margin-bottom: 5px;
  }

  .strip-description {
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    font-size: 0.85rem;
    line-height: 1.4;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 8px;
  }

  .strip-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
    width: 100%;
  }

  .strip-meta .meta-item {
    font-size: 0.7rem;
    padding: 3px 10px;
    background-color: var(--neutral-100);
    width: auto;
    flex-grow: 0;
    white-space: nowrap;
    border-radius: 50px;
    /* Pill shape */
    display: inline-flex;
    align-items: center;
    gap: 4px;
    border: 1px solid rgba(0, 0, 0, 0.05);
  }

  .strip-meta .meta-item i {
    font-size: 0.7rem;
    /* Tiny icon */
  }

  /* النجمة والتصنيف يتموضعان في الزوايا — يرثان من library-card.css */
  /* padding-left لم يعد مطلوباً — العناصر أعلى البطاقة الآن */

  .strip-actions {
    width: 100%;
    margin-inline-end: 0;
    margin-top: 10px;
    justify-content: space-between;
    /* Space out star and button */
  }

  .download-link {
    flex-grow: 1;
    justify-content: center;
    padding: 12px;
  }

  /*
   * بطاقة المادة المزدوجة (نفس createLibraryCard): قاعدة #library #booksGrid .material-strip أعلاه
   * من حيث التحديد فتبقي padding 1rem — نطابق المحتوى المميز على الرئيسية (library-card + library-showcase).
   */
  #library #booksGrid .material-strip.material-strip--dual-layout {
    align-items: stretch;
    padding: 0.65rem clamp(0.45rem, 2vw, 1rem) 0.55rem;
    padding-top: clamp(1.75rem, 6vw, 2.05rem);
    gap: 0.5rem;
    margin-bottom: 0;
    border-radius: 11px;
    overflow: hidden;
  }

  /* مسافة بين بطاقات المادة = مثل شبكة المحتوى المميز على الرئيسية */
  #library #booksGrid .materials-list {
    gap: 8px;
  }
}

@media (max-width: 400px) {

  /* Very small screens: 1 column for cards */
  #library .books-grid.grades-view,
  #library .books-grid.subjects-view,
  .grades-grid,
  .subjects-grid {
    grid-template-columns: 1fr;
  }
}

/* بطاقة المكتبة/المميز — شارات التخطيط المدمج: زوايا مربّعة (يُحمَّل بعد library-showcase.css) */
.material-strip--dual-layout .strip-corner--dual-anchor,
.material-strip--dual-layout .library-card-mobile .file-pill {
  border-radius: 6px;
}

.material-strip--dual-layout .library-card-mobile .strip-meta--compact-single .meta-item {
  border-radius: 10px;
}

/* تقليل الحركة — المكتبة الرقمية */
@media (prefers-reduced-motion: reduce) {
  #library .capsule,
  #library #booksGrid .material-strip,
  .material-strip,
  .grade-card,
  .book-card,
  .download-btn,
  .download-link,
  .help-card {
    transition: none !important;
  }

  .download-notification {
    transition: none;
  }
}

/* ═══ بحث المكتبة — شريط موحّد في سطر واحد + تجاوب كامل ═══ */
#library #libraryAdvancedFilters {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  margin: 12px 0 28px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

/* ─── الشريط الرئيسي: flex بدون التفاف ─── */
#library .library-search-toolbar-row {
  --lib-h: clamp(44px, 4.5vw + 32px, 48px);
  --lib-r: 999px;
  --lib-border: 1.5px solid rgba(var(--primary-color-rgb), 0.18);
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: clamp(6px, 1.8vw, 10px);
  max-width: min(1100px, 100%);
  width: 100%;
  margin: 0 auto 10px;
  padding-block: clamp(8px, 2vw, 12px);
  padding-inline: max(clamp(10px, 3vw, 14px), env(safe-area-inset-inline-start, 0px))
    max(clamp(10px, 3vw, 14px), env(safe-area-inset-inline-end, 0px));
  border-radius: clamp(18px, 3vw, 24px);
  background: rgba(var(--primary-color-rgb), 0.03);
  border: 1px solid rgba(var(--primary-color-rgb), 0.09);
  box-shadow: 0 2px 12px rgba(var(--black-rgb), 0.04);
  box-sizing: border-box;
}

/* ─── حاوية البحث — تمتد لتملأ المساحة المتبقية ─── */
#library .library-search-toolbar-row > .library-search-oval-cell {
  flex: 1 1 0%;
  min-width: 0;
  margin: 0 !important;
  display: flex;
  align-items: stretch;
}

/* ─── مربع البحث البيضاوي — override كامل للاستايل العالمي ─── */
#library .library-search-toolbar-row .search-box-oval {
  display: flex !important;
  align-items: center !important;
  width: 100%;
  max-width: none !important;
  margin: 0 !important;
  height: var(--lib-h);
  box-sizing: border-box;
  padding: 0 50px 0 20px;
  border: var(--lib-border);
  border-radius: var(--lib-r);
  background: var(--surface-0);
  box-shadow: none !important;
  transform: none !important;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#library .library-search-toolbar-row .search-box-oval:hover {
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1) !important;
  transform: none !important;
}

#library .library-search-toolbar-row .search-box-oval:focus-within {
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.12) !important;
}

#library .library-search-toolbar-row .search-box-oval.has-text .clear-search {
  display: flex;
}

/* حقل البحث داخل الشريط: لا يتمدد تحت العدسة (placeholder طويل + flex) */
#library .library-search-toolbar-row .search-input-oval {
  flex: 1 1 0%;
  min-width: 0;
  width: auto;
  box-sizing: border-box;
  padding: 0;
  /* هامش من جهة العدسة (inline-start = يمين في RTL) — يستبدل padding المشترك */
  padding-inline-start: max(12px, 0.85em);
}

/* العدسة بمحاذاة بداية السطر المنطقية بدل fixed physical right */
#library .library-search-toolbar-row .search-icon-oval {
  right: auto;
  inset-inline-start: 18px;
}

/* ─── القوائم المنسدلة — عرض ثابت، لا تتمدد ─── */
#library .library-search-toolbar-row > .oval-select-wrapper {
  flex: 0 0 180px;
  width: 180px;
  min-width: 0;
  max-width: 180px;
  height: var(--lib-h);
  min-height: var(--lib-h);
  max-height: var(--lib-h);
  margin: 0 !important;
  padding: 0;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  border: var(--lib-border);
  border-radius: var(--lib-r);
  background: var(--surface-0);
  box-shadow: none;
  transform: none !important;
  transition: border-color 0.2s ease, background 0.2s ease;
}

#library .library-search-toolbar-row > .oval-select-wrapper:hover,
#library .library-search-toolbar-row > .oval-select-wrapper:focus-within {
  transform: none !important;
  border-color: var(--primary-color);
  background: rgba(var(--primary-color-rgb), 0.04);
}

/* أيقونة داخل القائمة — جانب البداية (اليمين في RTL) */
#library .library-search-toolbar-row .oval-select-icon {
  position: absolute;
  right: 13px;
  left: auto;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  pointer-events: none;
  color: var(--primary-color);
  font-size: 0.8rem;
  opacity: 0.85;
  line-height: 1;
}

/* السهم — جانب النهاية (اليسار في RTL) */
#library .library-search-toolbar-row .oval-select-arrow {
  position: absolute;
  left: 12px;
  right: auto;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--primary-color);
  font-size: 0.72rem;
  opacity: 0.75;
}

/* عنصر select — padding صحيح لـ RTL: يمين للأيقونة، يسار للسهم */
#library .library-search-toolbar-row .oval-select {
  height: 100%;
  min-height: 0;
  padding: 0 38px 0 30px !important;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-strong);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─── زر إعادة الضبط الدائري — مثل الأنشطة/المتفوقين (دوران عند المرور + دورة عند الضغط) ─── */
#library .library-search-toolbar-row > .unified-reset-btn.circular {
  flex: 0 0 var(--lib-h);
  width: var(--lib-h);
  height: var(--lib-h);
  min-width: var(--lib-h);
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-color, var(--primary-color));
  border: none;
  color: var(--text-white);
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(var(--primary-color-rgb), 0.25);
  overflow: visible;
  transition: background 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
  will-change: transform;
}

#library .library-search-toolbar-row > .unified-reset-btn.circular:hover {
  background: var(--accent-color-hover, var(--primary-color));
  box-shadow: 0 4px 14px rgba(var(--primary-color-rgb), 0.35);
}

#library .library-search-toolbar-row > .unified-reset-btn.circular i {
  font-size: 1.05rem;
  color: var(--text-white);
  display: block;
  line-height: 1;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  #library .library-search-toolbar-row > .unified-reset-btn.circular:hover i {
    transform: rotate(-180deg);
  }
}

#library .library-search-toolbar-row > .unified-reset-btn.circular.spinning {
  animation: none;
}

#library .library-search-toolbar-row > .unified-reset-btn.circular.spinning i {
  animation: libraryToolbarResetIconSpin 0.5s ease-in-out;
  transform-origin: center center;
}

@keyframes libraryToolbarResetIconSpin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  #library .library-search-toolbar-row > .unified-reset-btn.circular.spinning i {
    animation: none;
  }

  #library .library-search-toolbar-row > .unified-reset-btn.circular:hover i {
    transform: none;
  }
}

/* ─── تابلت: تفاف مبكر عند ضيق العرض ─── */
@media (max-width: 900px) {
  #library #libraryAdvancedFilters {
    margin: 10px 0 22px;
  }
}

/* ─── شاشات متوسطة: بحث بعرض كامل، قائمتان بجانب بعض ─── */
@media (max-width: 820px) {
  #library .library-search-toolbar-row {
    flex-wrap: wrap;
    padding: 10px 12px;
    gap: 10px;
    justify-content: stretch;
  }

  #library .library-search-toolbar-row > .library-search-oval-cell {
    flex: 1 1 100%;
    min-width: 0;
  }

  #library .library-search-toolbar-row > .oval-select-wrapper {
    flex: 1 1 calc(50% - 6px);
    min-width: 0;
    width: auto;
    max-width: none;
  }

  #library .library-search-toolbar-row > .unified-reset-btn.circular {
    flex: 0 0 var(--lib-h);
    align-self: center;
  }
}

/* ─── موبايل: قائمتان بعرض كامل ثم الزر ─── */
@media (max-width: 520px) {
  #library .library-search-toolbar-row > .oval-select-wrapper {
    flex: 1 1 100%;
    max-width: 100%;
  }

  #library .library-search-toolbar-row .search-box-oval {
    /* كان padding-inline: 12px 44px فيضع 12px فقط بجهة العدسة في RTL فيتداخل النص */
    padding-inline-start: max(12px, 48px);
    padding-inline-end: max(12px, 44px);
  }

  /*
   * موبايل: إخفاء سهم القائمة المنسدلة (picker أصلي على اللمس).
   * الأيقونة على اليمين تبقى — فقط نزيل السهم اليساري ونحذف مساحته.
   * -webkit-appearance لـ iOS Safari.
   */
  #library .library-search-toolbar-row .oval-select-arrow {
    display: none;
  }

  #library .library-search-toolbar-row .oval-select {
    -webkit-appearance: none;
    appearance: none;
    font-size: max(0.86rem, 16px);
    /* يمين: مساحة أيقونة (38px) | يسار: هامش بصري (16px بدل 30px للسهم المحذوف) */
    padding: 0 38px 0 16px !important;
    -webkit-text-align-last: center;
    text-align-last: center;
    text-align: center;
    direction: rtl;
  }

  /* توحيد تجربة زر إعادة التعيين مع المجلة على الهاتف */
  #library .library-search-toolbar-row > .unified-reset-btn.circular {
    flex: 1 1 100%;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    height: 46px;
    min-height: 46px;
    border-radius: 14px;
    padding-inline: 16px;
    justify-content: center;
    align-self: stretch;
    gap: 8px;
  }

  #library .library-search-toolbar-row > .unified-reset-btn.circular::after {
    content: "إعادة التعيين";
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1;
  }
}

/* ─── هواتف ضيقة ─── */
@media (max-width: 400px) {
  #library .library-search-toolbar-row {
    padding: 8px 10px;
    gap: 8px;
    border-radius: 18px;
  }

  #library .library-search-toolbar-row > .unified-reset-btn.circular {
    align-self: stretch;
    height: 44px;
    min-height: 44px;
    border-radius: 12px;
  }

  #library .library-search-toolbar-row > .unified-reset-btn.circular::after {
    font-size: 0.86rem;
  }
}

#library .library-search-hint {
  text-align: center;
  font-size: clamp(0.82rem, 2.5vw, 0.9rem);
  color: var(--text-muted);
  margin: 10px 0 0;
  min-height: 1.35em;
}

#library .library-search-mode-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
  padding-block: 12px;
  padding-inline: max(16px, env(safe-area-inset-inline-start, 0px)) max(16px, env(safe-area-inset-inline-end, 0px));
  border-radius: var(--radius-lg, 14px);
  background: rgba(var(--primary-color-rgb), 0.05);
  border: 1px solid rgba(var(--primary-color-rgb), 0.1);
  width: 100%;
  max-width: min(1180px, 100%);
  margin-inline: auto;
  box-sizing: border-box;
}

@media (max-width: 520px) {
  #library .library-search-mode-bar {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    gap: 10px;
    padding: 12px;
  }

  #library .library-search-count {
    font-size: 0.88rem;
    line-height: 1.4;
  }

  #library .library-exit-search-btn {
    width: 100%;
    justify-content: center;
    min-height: 44px;
  }
}

#library .library-search-count {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.95rem;
}

#library .library-exit-search-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 700;
  font-family: 'Tajawal', sans-serif;
  font-size: 0.88rem;
  color: var(--text-white);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  box-shadow: 0 4px 14px rgba(var(--primary-color-rgb), 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

@media (hover: hover) {
  #library .library-exit-search-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(var(--primary-color-rgb), 0.3);
  }
}

/* حاوية نتائج البحث: تجاوز شبكة books-grid الافتراضية (5 أعمدة) — عمود واحد بعرض كامل */
#library .books-grid.library-search-results-view {
  display: block;
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  margin-top: clamp(0.75rem, 3vw, 1.25rem);
  padding-inline: max(0px, env(safe-area-inset-inline-start, 0px), env(safe-area-inset-inline-end, 0px));
  min-height: 120px;
  box-sizing: border-box;
}

/* قائمة نتائج بسيطة — صف لكل نتيجة، مناسبة لعدد كبير من النتائج */
#library .library-search-hits {
  display: flex;
  flex-direction: column;
  gap: clamp(5px, 1.2vw, 8px);
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  box-sizing: border-box;
}

#library .library-search-hit--compact {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: clamp(8px, 2vw, 14px);
  padding: clamp(10px, 2.5vw, 12px) clamp(12px, 3.5vw, 16px);
  background: var(--surface-0);
  border: 1px solid rgba(var(--primary-color-rgb), 0.1);
  border-radius: clamp(10px, 2vw, 12px);
  text-align: start;
  min-height: 0;
  box-shadow: none;
  transition: border-color 0.15s ease, background 0.15s ease;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

@media (hover: hover) {
  #library .library-search-hit--compact:hover {
    border-color: rgba(var(--primary-color-rgb), 0.22);
    background: rgba(var(--primary-color-rgb), 0.025);
  }
}

#library .library-search-hit-body {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#library .library-search-hit--compact .library-search-hit-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.4;
  text-align: start;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}

#library .library-search-hit-meta {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.45;
  text-align: start;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}

/* وصف مختصر — نفس مقاس سطر الميتا، لون أوضح قليلاً، حتى 3 أسطر */
#library .library-search-hit-desc {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.45;
  text-align: start;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}

#library .library-search-hit--compact .library-hit-open {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  min-height: 44px;
  min-width: 44px;
  border-radius: 999px;
  border: 1px solid rgba(var(--primary-color-rgb), 0.28);
  background: rgba(var(--primary-color-rgb), 0.06);
  color: var(--primary-color);
  font-weight: 700;
  font-family: 'Tajawal', sans-serif;
  font-size: clamp(0.78rem, 2.4vw, 0.82rem);
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) {
  #library .library-search-hit--compact .library-hit-open:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-white);
  }
}

#library .library-search-hit--compact .library-hit-open i {
  font-size: 0.85em;
}

/* بطاقات نتائج البحث — تخطيط عمودي على الشاشات الضيقة */
@media (max-width: 640px) {
  #library .library-search-hit--compact {
    flex-direction: column;
    align-items: stretch;
    flex-wrap: nowrap;
  }

  #library .library-search-hit--compact .library-search-hit-body {
    width: 100%;
  }

  #library .library-search-hit--compact .library-hit-open {
    width: 100%;
    margin-top: 4px;
    justify-content: center;
  }
}

@media (max-width: 380px) {
  #library .library-search-hit--compact .library-search-hit-title {
    font-size: 0.9rem;
  }

  #library .library-search-hit-meta,
  #library .library-search-hit-desc {
    font-size: 0.74rem;
  }
}

#library .library-no-search-results {
  text-align: center;
  padding: 2.5rem max(1.25rem, env(safe-area-inset-inline-start))
    2.5rem max(1.25rem, env(safe-area-inset-inline-end));
  margin-bottom: 1.5rem;
  border-radius: var(--radius-lg, 16px);
  background: rgba(var(--primary-color-rgb), 0.03);
  border: 1px dashed rgba(var(--primary-color-rgb), 0.18);
}

@media (max-width: 480px) {
  #library .library-no-search-results {
    padding: 1.75rem max(1rem, env(safe-area-inset-inline-start))
      1.75rem max(1rem, env(safe-area-inset-inline-end));
  }

  #library .library-no-search-icon {
    width: 52px;
    height: 52px;
    font-size: 1.35rem;
  }
}

#library .library-no-search-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(var(--primary-color-rgb), 0.08);
  color: var(--primary-color);
  font-size: 1.6rem;
}

#library .library-no-search-results h3 {
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

#library .library-no-search-results p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

#library .library-try-search-again-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 700;
  font-family: 'Tajawal', sans-serif;
  background: var(--primary-color);
  color: var(--text-white);
}

/* ═══ ثيم الليل — بحث المكتبة (شريط الأدوات، النتائج، تباين أوضح) ═══ */
body.theme-night #library .library-search-toolbar-row {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.28);
}

body.theme-night #library .library-search-toolbar-row .search-box-oval {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

body.theme-night #library .library-search-toolbar-row .search-box-oval:hover,
body.theme-night #library .library-search-toolbar-row .search-box-oval:focus-within {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.28) !important;
}

body.theme-night #library .library-search-toolbar-row .search-input-oval::placeholder {
  color: var(--text-3);
  opacity: 1;
}

body.theme-night #library .library-search-toolbar-row .search-icon-oval {
  color: var(--primary-light);
  opacity: 0.95;
}

body.theme-night #library .library-search-toolbar-row > .oval-select-wrapper {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.14);
}

body.theme-night #library .library-search-toolbar-row > .oval-select-wrapper:hover,
body.theme-night #library .library-search-toolbar-row > .oval-select-wrapper:focus-within {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(167, 139, 250, 0.55);
}

body.theme-night #library .library-search-toolbar-row .oval-select {
  color: var(--text-0);
}

body.theme-night #library .library-search-toolbar-row .oval-select-icon,
body.theme-night #library .library-search-toolbar-row .oval-select-arrow {
  color: var(--primary-light);
  opacity: 1;
}

body.theme-night #library .library-search-toolbar-row .clear-search:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--primary-light);
}

body.theme-night #library .library-search-hint {
  color: var(--text-3);
}

body.theme-night #library .library-search-mode-bar {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.12);
}

body.theme-night #library .library-search-hit--compact {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.12);
}

@media (hover: hover) {
  body.theme-night #library .library-search-hit--compact:hover {
    background: rgba(255, 255, 255, 0.09);
    border-color: rgba(167, 139, 250, 0.45);
  }
}

body.theme-night #library .library-search-hit--compact .library-search-hit-title {
  color: var(--text-0);
}

body.theme-night #library .library-search-hit-meta {
  color: var(--text-3);
}

body.theme-night #library .library-search-hit-desc {
  color: var(--text-2);
}

body.theme-night #library .library-search-hit--compact .library-hit-open {
  border-color: rgba(167, 139, 250, 0.55);
  background: rgba(124, 58, 237, 0.22);
  color: #e9d5ff;
}

@media (hover: hover) {
  body.theme-night #library .library-search-hit--compact .library-hit-open:hover {
    background: var(--primary-color);
    border-color: var(--primary-light);
    color: #ffffff;
  }
}

body.theme-night #library .library-no-search-results {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.14);
}

body.theme-night #library .library-no-search-icon {
  background: rgba(124, 58, 237, 0.25);
  color: var(--primary-light);
}

/* ═══ زر رجوع — مستويات المكتبة: حجز مساحة للمحتوى + موضع منطقي بعيداً عن وسط الشاشة ═══ */
#library.library--deep-nav .books-display {
  padding-bottom: calc(5.25rem + env(safe-area-inset-bottom, 0px));
}

@media (max-width: 640px) {
  #library.library--deep-nav .books-display {
    padding-bottom: calc(5.75rem + env(safe-area-inset-bottom, 0px));
  }
}

/*
 * موضع: بداية السطر المنطقي (في RTL = يمين الشاشة) لتفادي التداخل مع زر «الأعلى» في المنتصف.
 * z-index تحت شريط التنقل والنوافذ المنبثقة؛ الحجز أعلاه يمنع تغطية البطاقات.
 */
#library .library-floating-back {
  position: fixed;
  z-index: 920;
  bottom: max(0.5rem, env(safe-area-inset-bottom, 0px));
  inset-inline-start: max(0.65rem, env(safe-area-inset-inline-start, 0px));
  inset-inline-end: auto;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  max-width: min(calc(100vw - 1.35rem), 17.5rem);
  padding: 8px 14px;

  font-family: 'Tajawal', sans-serif;
  font-weight: 700;
  font-size: clamp(0.78rem, 2.1vw, 0.88rem);
  line-height: 1.2;
  color: var(--text-white);
  cursor: pointer;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  box-shadow:
    0 4px 16px rgba(var(--primary-color-rgb), 0.28),
    0 1px 4px rgba(0, 0, 0, 0.08);
  transition:
    transform 0.28s ease,
    box-shadow 0.28s ease,
    opacity 0.28s ease;
  -webkit-tap-highlight-color: transparent;
}

#library .library-floating-back i {
  font-size: 0.95rem;
  flex-shrink: 0;
}

#library .library-floating-back__label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (hover: hover) {
  #library .library-floating-back:hover {
    transform: translateY(-1px);
    box-shadow:
      0 6px 20px rgba(var(--primary-color-rgb), 0.34),
      0 2px 8px rgba(0, 0, 0, 0.1);
  }
}

#library .library-floating-back:active {
  transform: translateY(0);
}

#library .library-floating-back.library-floating-back--away {
  box-shadow:
    0 6px 22px rgba(var(--primary-color-rgb), 0.36),
    0 2px 10px rgba(0, 0, 0, 0.12);
}

/* موبايل: شريط سفلي بعرض المنطقة الآمنة — يقلّل التغطية على بطاقات الشبكة */
@media (max-width: 640px) {
  #library .library-floating-back {
    inset-inline-start: max(0.5rem, env(safe-area-inset-inline-start, 0px));
    inset-inline-end: max(0.5rem, env(safe-area-inset-inline-end, 0px));
    width: auto;
    max-width: none;

    min-height: 46px;
    padding: 10px 16px;
    border-radius: 12px;

    justify-content: center;
    gap: 8px;

    bottom: max(0.35rem, env(safe-area-inset-bottom, 0px));
    box-shadow:
      0 -2px 18px rgba(0, 0, 0, 0.07),
      0 4px 14px rgba(var(--primary-color-rgb), 0.22);
  }

  #library .library-floating-back__label {
    max-width: none;
  }
}

@media (max-width: 380px) {
  #library .library-floating-back {
    font-size: 0.82rem;
    padding-inline: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #library .library-floating-back {
    transition: none;
  }

  #library .library-floating-back:hover {
    transform: none;
  }
}

body.theme-night #library .library-floating-back {
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow:
    0 4px 18px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(124, 58, 237, 0.28);
}

body.theme-night #library .library-floating-back.library-floating-back--away {
  box-shadow:
    0 6px 24px rgba(0, 0, 0, 0.42),
    0 0 0 1px rgba(167, 139, 250, 0.35);
}

@media (max-width: 640px) {
  body.theme-night #library .library-floating-back {
    box-shadow:
      0 -2px 20px rgba(0, 0, 0, 0.4),
      0 4px 16px rgba(0, 0, 0, 0.25);
  }
}

/* ═══════════════════════════════════════════════════════════════════
   حالات التحميل/الفراغ/الخطأ وبطاقة الصيانة — CSS واحد، يعمل مع كل الثيمات
   (استبدلت inline styles ذات الألوان الصلبة داخل library.page.js بـ classes هنا)
   ═══════════════════════════════════════════════════════════════════ */

#library .library-async-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
}

#library .library-async-state--loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

#library .library-async-state__icon {
  color: var(--neutral-400, #94a3b8);
  opacity: 0.6;
  margin-bottom: 1rem;
}

#library .library-async-state__text {
  margin-top: 1rem;
  color: var(--text-secondary);
}

#library .library-async-state--error {
  margin: 2rem;
  color: var(--text-strong);
}

/* Night theme: زيادة التباين للأيقونات الرمادية في حالات الفراغ */
body.theme-night #library .library-async-state {
  color: var(--text-secondary);
}

body.theme-night #library .library-async-state__icon {
  color: var(--neutral-500, #64748b);
  opacity: 0.8;
}

/* Night theme: alert-danger مخصّص (Bootstrap الافتراضي بخلفية فاتحة جداً في الوضع الداكن) */
body.theme-night #library .library-async-state--error.alert-danger {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

/* ─── بطاقة الصيانة ─── */
#library .library-maintenance-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

#library .maintenance-card {
  background: var(--surface-color, #fff);
  border: 1px solid var(--border-color, #e9ecef);
  border-radius: 16px;
  padding: 3rem 2.5rem;
  text-align: center;
  max-width: 520px;
  width: 100%;
  box-shadow: 0 4px 24px rgba(var(--black-rgb, 0, 0, 0), 0.08);
  position: relative;
  overflow: hidden;
  color: var(--text-strong);
}

#library .maintenance-card__gradient-bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color, var(--primary-color)));
}

#library .maintenance-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg,
    rgba(var(--primary-color-rgb, 99, 102, 241), 0.1),
    rgba(var(--secondary-color-rgb, 139, 92, 246), 0.1));
  color: var(--primary-color);
  border-radius: 50%;
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
}

#library .maintenance-card__message {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  white-space: pre-line;
}

#library .maintenance-card__home-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.5rem;
  background: var(--primary-color);
  color: var(--text-white, #fff);
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

@media (hover: hover) {
  #library .maintenance-card__home-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
  }
}

/* Night theme: بطاقة صيانة داكنة بتباين مناسب */
body.theme-night #library .maintenance-card {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--text-strong);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

body.theme-night #library .maintenance-card__message {
  color: var(--text-secondary);
}

body.theme-night #library .maintenance-card__icon {
  background: linear-gradient(135deg,
    rgba(var(--primary-color-rgb), 0.2),
    rgba(var(--secondary-color-rgb, var(--primary-color-rgb)), 0.2));
}