/* ==========================================================================
   منصة الأستاذ عزازي علي (التاريخ والجغرافيا) - نظام التصميم الأساسي
   Main Design System - Vanilla CSS (RTL First, Modern & Accessible)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Arabic:wght@300;400;500;600;700&display=swap');

:root {
  /* لوحة الألوان المعتمدة */
  --navy-950: #070d1e;
  --navy-900: #0c1427;
  --navy-850: #111d38;
  --navy-800: #18274b;
  --navy-700: #223667;
  --navy-600: #334d8f;

  /* الذهبي الهادئ المعتمد للأزرار والتمييز */
  --gold-500: #c89b3c;
  --gold-600: #b5892f;
  --gold-700: #966f22;
  --gold-100: #fef7ea;
  --gold-200: #fdecd0;

  /* تمييز مادة التاريخ (رملي دافئ) */
  --history-color: #b47834;
  --history-bg: #fef6ea;
  --history-border: #fed7aa;

  /* تمييز مادة الجغرافيا (تركواز هادئ) */
  --geo-color: #0d9488;
  --geo-bg: #e6fffa;
  --geo-border: #99f6e4;

  /* ألوان الحالات والنتائج */
  --success-color: #10b981;
  --success-bg: #ecfdf5;
  --danger-color: #ef4444;
  --danger-bg: #fef2f2;
  --warning-color: #f59e0b;
  --warning-bg: #fffbeb;

  /* ألوان الواجهة والبطاقات */
  --bg-page: #f4f6fa;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --border-light: #edf2f7;

  /* ألوان النصوص */
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-white: #ffffff;

  /* الظلال */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(12, 20, 39, 0.07);
  --shadow-lg: 0 10px 25px rgba(12, 20, 39, 0.1);
  --shadow-xl: 0 20px 40px rgba(12, 20, 39, 0.15);

  /* الخطوط والمسافات */
  --font-family: 'IBM Plex Sans Arabic', -apple-system, BlinkMacSystemFont, 'Segoe UI', Tahoma, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* إعادة التعيين الأساسية */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  direction: rtl;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  direction: rtl;
  text-align: right;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* الروابط */
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

/* الأزرار الأساسية (أهداف لمس لا تقل عن 44px) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  min-width: 44px;
  padding: 0.6rem 1.4rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  user-select: none;
}

.btn-gold {
  background-color: var(--gold-500);
  color: var(--navy-950);
  border-color: var(--gold-600);
  box-shadow: 0 2px 8px rgba(200, 155, 60, 0.3);
}

.btn-gold:hover {
  background-color: var(--gold-600);
  color: var(--navy-950);
  box-shadow: 0 4px 12px rgba(200, 155, 60, 0.4);
}

.btn-gold:active { transform: translateY(1px); }

.btn-navy {
  background-color: var(--navy-850);
  color: #ffffff;
  border-color: var(--navy-700);
}

.btn-navy:hover {
  background-color: var(--navy-700);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-outline:hover {
  background-color: #f1f5f9;
  border-color: var(--navy-600);
}

.btn-danger {
  background-color: var(--danger-color);
  color: #ffffff;
}

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-warning {
  background-color: #d97706;
  color: #ffffff;
}

.btn-warning:hover {
  background-color: #b45309;
}

.btn-sm {
  min-height: 36px;
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

.btn:focus-visible,
.form-control:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(51, 77, 143, 0.4);
  outline-offset: 2px;
}

.ui-icon {
  width: 1.15rem;
  height: 1.15rem;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: 0 0 auto;
}

/* البطاقات المعتمدة */
.card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

/* شارات المواد والحالات */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  line-height: 1.4;
}

.badge-history {
  background-color: var(--history-bg);
  color: var(--history-color);
  border: 1px solid var(--history-border);
}

.badge-geography {
  background-color: var(--geo-bg);
  color: var(--geo-color);
  border: 1px solid var(--geo-border);
}

.badge-social {
  background-color: #f3e8ff;
  color: #6b21a8;
  border: 1px solid #e9d5ff;
}

.badge-success {
  background-color: var(--success-bg);
  color: var(--success-color);
  border: 1px solid #a7f3d0;
}

.badge-danger {
  background-color: var(--danger-bg);
  color: var(--danger-color);
  border: 1px solid #fecaca;
}

.badge-warning {
  background-color: var(--warning-bg);
  color: var(--warning-color);
  border: 1px solid #fde68a;
}

/* النماذج وحقول الإدخال */
.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-control {
  min-height: 44px;
  width: 100%;
  padding: 0.6rem 0.9rem;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-main);
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--gold-500);
  box-shadow: 0 0 0 3px rgba(200, 155, 60, 0.15);
}

/* الجداول المتجاوبة */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: right;
  font-size: 0.92rem;
  background-color: #ffffff;
}

.data-table th {
  background-color: #f8fafc;
  color: var(--text-muted);
  font-weight: 600;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-main);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background-color: #fbfcfe;
}

/* إشعار عائم Toast */
#toast-container {
  position: fixed;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  max-width: 400px;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideIn 0.3s ease;
}

.toast-success { background-color: #059669; }
.toast-error { background-color: #dc2626; }
.toast-info { background-color: var(--navy-850); }

@keyframes slideIn {
  from { transform: translateX(-100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* النوافذ المنبثقة Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(12, 20, 39, 0.6);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  padding: 1.75rem;
  transform: translateY(20px);
  transition: transform 0.25s ease;
}

.modal-overlay.active .modal-container {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy-900);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
}

/* الحالات الفارغة Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
}

.empty-state svg, .empty-state .icon {
  width: 56px;
  height: 56px;
  margin-bottom: 1rem;
  color: var(--text-light);
}

.empty-state h3 {
  font-size: 1.15rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.empty-state--wide { grid-column: 1 / -1; }
.empty-state-action { margin-top: 1rem; }

.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 1rem;
  width: 100%;
}
.skeleton-card {
  min-height: 180px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  background: #fff;
  padding: 1.25rem;
}
.skeleton-line {
  height: 12px;
  margin-bottom: .8rem;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, #edf2f7 25%, #f8fafc 50%, #edf2f7 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.25s infinite linear;
}
.skeleton-line.short { width: 45%; }
.skeleton-line.medium { width: 70%; }
.skeleton-line.tall { height: 42px; margin-top: 1.25rem; }
@keyframes skeleton-shimmer { to { background-position: -200% 0; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

/* مكان أيقونة فاضي (من غير إيموجي) بيتخفى بدل ما يسيب مربع فاضي */
.sidebar-icon:empty, .portal-icon:empty, .alert-icon:empty, .att-icon:empty, .stat-icon:empty, .user-snippet-avatar:empty, .s-avatar:empty { display: none; }
/* الكورسات والحصص */
.course-checks { display: flex; flex-wrap: wrap; gap: .4rem; padding: .5rem; border: 1px solid var(--border-color); border-radius: 10px; background: #f8fafc; max-height: 160px; overflow: auto; }
.course-check { display: inline-flex; align-items: center; gap: .35rem; padding: .3rem .65rem; border: 1px solid #e2e8f0; border-radius: 999px; background: #fff; cursor: pointer; font-size: .88rem; font-weight: 700; }
.nav-badge { margin-inline-start: auto; min-width: 20px; height: 20px; padding: 0 .35rem; border-radius: 999px; background: #ef4444; color: #fff; font-size: .72rem; font-weight: 800; display: inline-grid; place-items: center; }
.courses-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); }
.course-card { padding: 1.1rem 1.2rem; }
.course-head { display: flex; justify-content: space-between; gap: .8rem; flex-wrap: wrap; align-items: flex-start; }
.course-title { margin: 0 0 .25rem; font-size: 1.1rem; color: var(--navy-900, #0f172a); }
.course-meta { font-size: .85rem; color: var(--text-muted, #64748b); }
.course-actions { display: flex; gap: .35rem; flex-wrap: wrap; }
.course-desc { margin: .6rem 0 0; color: #475569; font-size: .9rem; }
.course-stats { display: flex; gap: .4rem; flex-wrap: wrap; margin-top: .7rem; }
.lesson-list { display: flex; flex-direction: column; gap: .5rem; margin-bottom: 1rem; }
.lesson-row { display: flex; align-items: center; gap: .7rem; padding: .6rem .8rem; border: 1px solid var(--border-color); border-radius: 12px; background: #fff; flex-wrap: wrap; }
.lesson-num { width: 30px; height: 30px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: #fef3c7; color: #92400e; font-weight: 800; }
.lesson-info { flex: 1; min-width: 160px; }
.lesson-links { display: flex; gap: .8rem; flex-wrap: wrap; font-size: .82rem; margin-top: .15rem; }
.lesson-links a { color: #1d4ed8; font-weight: 700; }
.lesson-btns { display: flex; gap: .3rem; flex-wrap: wrap; }
.lesson-form { padding: .9rem 1rem; border: 2px dashed var(--gold-500, #c89b3c); border-radius: 14px; background: #fffbeb; }
.muted { color: var(--text-muted, #64748b); font-size: .85rem; }
/* تبويبات الفصل (حضوري / أونلاين) وأزرار الطلاب المضغوطة */
.seg-tabs { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: .8rem; }
.seg-tab { flex: 1; min-width: 150px; padding: .65rem 1rem; border: 2px solid var(--border-color); border-radius: 12px; background: #fff; color: var(--text-muted, #475569); font-family: inherit; font-weight: 800; cursor: pointer; }
.seg-tab.active { border-color: var(--gold-500, #c89b3c); background: #fffbeb; color: var(--navy-900, #0f172a); box-shadow: 0 4px 12px rgba(200,155,60,.22); }
.seg-count { display: inline-block; min-width: 1.5rem; padding: 0 .4rem; margin-inline-start: .25rem; border-radius: 999px; background: #e2e8f0; color: #0f172a; font-size: .78rem; text-align: center; }
.seg-tab.active .seg-count { background: var(--gold-500, #c89b3c); color: #fff; }
.row-actions { display: flex; gap: .35rem; flex-wrap: nowrap; align-items: flex-start; }
.row-actions > .btn { white-space: nowrap; }
.more-menu { flex: 0 0 auto; }
.more-menu > summary { display: inline-block; list-style: none; cursor: pointer; }
.more-menu > summary::-webkit-details-marker { display: none; }
.more-menu[open] > summary { background: #f1f5f9; }
.more-menu .more-list { display: flex; flex-direction: column; align-items: stretch; gap: .35rem; margin-top: .4rem; min-width: 150px; padding: .5rem; border: 1px dashed var(--border-color); border-radius: 10px; background: #f8fafc; }
.more-menu .more-list .btn { white-space: nowrap; text-align: start; }
@media (min-width: 681px) { #studentsTableBody td:last-child { min-width: 290px; } }
.stu-pick { display: inline-flex; align-items: center; gap: .4rem; cursor: pointer; }
.stu-pick input { width: 17px; height: 17px; }
.type-chip { display: inline-block; padding: .05rem .45rem; border-radius: 999px; font-size: .7rem; font-weight: 800; vertical-align: middle; }
.type-chip.online { background: #dbeafe; color: #1d4ed8; }
.type-chip.offline { background: #fef3c7; color: #92400e; }
.type-chip.both { background: #ede9fe; color: #5b21b6; }
.bulk-bar { position: sticky; top: .5rem; z-index: 20; display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; margin-bottom: .8rem; padding: .7rem 1rem; border: 2px solid var(--gold-500, #c89b3c); border-radius: 14px; background: #fffbeb; box-shadow: var(--shadow-md); }
.bulk-bar[hidden] { display: none; }
.bulk-bar label { display: inline-flex; align-items: center; gap: .35rem; font-weight: 700; font-size: .88rem; }
.bulk-bar select { min-width: 160px; }

@media (max-width: 680px) {
  #toast-container { right: 1rem; left: 1rem; top: 1rem; }
  .toast { width: 100%; min-width: 0; }
  .modal-overlay { padding: 0; align-items: flex-end; }
  .modal-container { max-height: 92vh; border-radius: 18px 18px 0 0; padding: 1.25rem; }
}


/* الجداول الكثيرة الأعمدة (الطلاب والمساعدون والامتحانات...) تتحول إلى بطاقات حتى عرض 1000 بكسل، فلا يخرج عمود الإجراءات خارج الشاشة */
@media (max-width: 1000px) {
  .responsive-cards { border: 0; overflow: visible; }
  .responsive-cards .data-table,
  .responsive-cards .data-table tbody { display: block; }
  .responsive-cards .data-table thead { display: none; }
  .responsive-cards .data-table { min-width: 0; }
  .responsive-cards .data-table td { overflow-wrap: anywhere; }
  /* كروت مضغوطة: الحقول القصيرة جنب بعض (عمودين) بدل سطر لكل حقل، والاسم والإجراءات بعرض الكارت */
  .responsive-cards .data-table tr { display: grid; grid-template-columns: 1fr 1fr; column-gap: .9rem; row-gap: .1rem; margin-bottom: .55rem; padding: .5rem .8rem; border: 1px solid var(--border-color); border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-sm); }
  .responsive-cards .data-table td { display: flex; flex-direction: row; flex-wrap: wrap; align-items: baseline; justify-content: flex-start; gap: .1rem .4rem; min-width: 0; padding: .15rem 0; border: 0; text-align: right; font-size: .88rem; overflow-wrap: anywhere; }
  .responsive-cards .data-table td::before { content: attr(data-label); color: var(--text-muted); font-weight: 600; font-size: .72rem; text-align: right; white-space: nowrap; }
  .responsive-cards .data-table td:first-child,
  .responsive-cards .data-table td:last-child,
  .responsive-cards .data-table td[colspan] { grid-column: 1 / -1; }
  .responsive-cards .data-table td:first-child::before,
  .responsive-cards .data-table td[data-label^="الإجراء"]::before { display: none; }
  .responsive-cards .data-table td:last-child > div,
  .responsive-cards .data-table td:last-child { flex-direction: row; flex-wrap: wrap; align-items: center; gap: .35rem; }
  .responsive-cards .data-table td:last-child::before { flex-basis: 100%; }
}@media (max-width: 400px) { .row-actions { flex-wrap: wrap; } }