/* ════════════════════════════════════════════════════════════
   assets/css/main.css — Global Stylesheet
   بيئة التعلم الذكية
   ════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;600;700;900&family=Tajawal:wght@300;400;500;700&display=swap');

/* ── Reset & Variables ─────────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

:root {
  --primary:   #1e40af;
  --primary-l: #3b82f6;
  --primary-xl:#dbeafe;
  --secondary: #7c3aed;
  --sec-l:     #a78bfa;
  --accent:    #059669;
  --gold:      #d97706;
  --danger:    #dc2626;
  --warn:      #f59e0b;

  --bg:        #f0f4ff;
  --card:      #ffffff;
  --border:    #e2e8f0;
  --text:      #0f172a;
  --text-m:    #334155;
  --text-l:    #64748b;

  --shadow-sm: 0 1px 6px rgba(15,23,42,.07);
  --shadow:    0 4px 20px rgba(15,23,42,.09);
  --shadow-lg: 0 12px 40px rgba(15,23,42,.12);

  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 20px;

  --font: 'Cairo','Tajawal',sans-serif;
  --transition: .2s cubic-bezier(.4,0,.2,1);
}

body {
  font-family: var(--font);
  background:  var(--bg);
  color:       var(--text);
  font-size:   15px;
  line-height: 1.6;
  min-height:  100vh;
  direction:   rtl;
}

/* ── Topbar ────────────────────────────────────────────────── */
.topbar {
  height:      60px;
  background:  var(--card);
  border-bottom: 1px solid var(--border);
  display:     flex;
  align-items: center;
  gap:         14px;
  padding:     0 26px;
  position:    sticky;
  top:         0;
  z-index:     200;
  box-shadow:  var(--shadow-sm);
}
.topbar-logo {
  display:     flex;
  align-items: center;
  gap:         10px;
  font-weight: 800;
  font-size:   1rem;
  color:       var(--primary);
  text-decoration: none;
  white-space: nowrap;
}
.topbar-logo .logo-box {
  width:  36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.topbar-spacer { flex: 1; }
.topbar-nav { display: flex; gap: 4px; }
.topbar-nav a, .topbar-nav button {
  padding:     8px 14px;
  border-radius: var(--radius-sm);
  border:      none;
  background:  transparent;
  font-family: var(--font);
  font-size:   .83rem;
  font-weight: 600;
  color:       var(--text-m);
  cursor:      pointer;
  transition:  var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.topbar-nav a:hover, .topbar-nav a.active,
.topbar-nav button:hover, .topbar-nav button.active {
  background: rgba(30,64,175,.08);
  color:      var(--primary);
}
.user-chip {
  display:     flex;
  align-items: center;
  gap:         8px;
  padding:     5px 14px 5px 8px;
  background:  rgba(30,64,175,.07);
  border-radius: 30px;
  font-size:   .8rem;
  font-weight: 600;
  color:       var(--primary);
  white-space: nowrap;
}
.user-chip .uavatar {
  width:  28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color:  white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  flex-shrink: 0;
}
.group-chip {
  padding:  3px 10px;
  border-radius: 20px;
  font-size: .72rem;
  font-weight: 700;
}
.group-chip.smart    { background: rgba(30,64,175,.12); color: var(--primary); }
.group-chip.adaptive { background: rgba(124,58,237,.12); color: var(--secondary); }

/* ── Sidebar ───────────────────────────────────────────────── */
.app-wrap {
  display: flex;
  min-height: calc(100vh - 60px);
}
.sidebar {
  width:      240px;
  flex-shrink: 0;
  background: var(--card);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  padding:    16px 0;
  position:   sticky;
  top:        60px;
  height:     calc(100vh - 60px);
}
.sidebar-section { margin-bottom: 6px; }
.sidebar-label {
  padding:   6px 18px;
  font-size: .68rem;
  font-weight: 700;
  color:     var(--text-l);
  text-transform: uppercase;
  letter-spacing: .6px;
}
.sidebar-item {
  display:     flex;
  align-items: center;
  gap:         10px;
  padding:     10px 18px;
  font-size:   .84rem;
  font-weight: 500;
  color:       var(--text-m);
  text-decoration: none;
  cursor:      pointer;
  transition:  var(--transition);
  border-right: 3px solid transparent;
}
.sidebar-item:hover {
  background: rgba(30,64,175,.05);
  color:      var(--primary);
}
.sidebar-item.active {
  background:  rgba(30,64,175,.08);
  color:       var(--primary);
  font-weight: 700;
  border-right-color: var(--primary);
}
.sidebar-item .si-icon { font-size: 1rem; width: 20px; text-align: center; flex-shrink: 0; }
.sidebar-item .si-badge {
  margin-right: auto;
  background:   var(--primary-xl);
  color:        var(--primary);
  border-radius: 20px;
  padding:      1px 8px;
  font-size:    .68rem;
  font-weight:  700;
}
.sidebar-sep {
  height: 1px;
  background: var(--border);
  margin: 8px 16px;
}

/* ── Main Content ──────────────────────────────────────────── */
.main-content {
  flex:      1;
  overflow:  auto;
  padding:   28px;
  min-width: 0;
}
.page-header { margin-bottom: 24px; }
.page-header h1 { font-size: 1.4rem; font-weight: 800; color: var(--text); }
.page-header p  { font-size: .85rem; color: var(--text-l); margin-top: 4px; }

/* ── Cards ─────────────────────────────────────────────────── */
.card {
  background:  var(--card);
  border:      1px solid var(--border);
  border-radius: var(--radius);
  box-shadow:  var(--shadow-sm);
  overflow:    hidden;
}
.card-header {
  padding:     16px 22px;
  border-bottom: 1px solid var(--border);
  display:     flex;
  align-items: center;
  gap:         10px;
  font-size:   .9rem;
  font-weight: 700;
  color:       var(--text);
}
.card-header .ch-badge {
  background: var(--primary-xl);
  color:      var(--primary);
  border-radius: var(--radius-sm);
  padding:    2px 8px;
  font-size:  .7rem;
  font-weight: 700;
  margin-right: auto;
}
.card-body { padding: 22px; }

/* ── Stats Grid ────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background:   var(--card);
  border:       1px solid var(--border);
  border-radius: var(--radius);
  padding:      18px 20px;
  box-shadow:   var(--shadow-sm);
  transition:   var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.stat-card .sc-label { font-size: .73rem; color: var(--text-l); font-weight: 600; margin-bottom: 8px; }
.stat-card .sc-num   { font-size: 2rem;   color: var(--primary); font-weight: 900; line-height: 1; }
.stat-card .sc-sub   { font-size: .73rem; color: var(--text-l); margin-top: 6px; }
.stat-card .sc-icon  { font-size: 1.5rem; float: left; opacity: .5; }
.sc-up   { color: var(--accent) !important; }
.sc-down { color: var(--danger) !important; }

/* ── Table ─────────────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
  padding:      10px 14px;
  text-align:   right;
  font-size:    .72rem;
  font-weight:  700;
  color:        var(--text-l);
  border-bottom: 2px solid var(--border);
  white-space:  nowrap;
}
.data-table td {
  padding:      12px 14px;
  font-size:    .83rem;
  color:        var(--text-m);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(30,64,175,.03); }

/* ── Badges & Pills ────────────────────────────────────────── */
.badge {
  display:      inline-flex;
  align-items:  center;
  gap:          4px;
  padding:      3px 10px;
  border-radius: 20px;
  font-size:    .72rem;
  font-weight:  700;
}
.badge-primary  { background: rgba(30,64,175,.12);  color: var(--primary); }
.badge-purple   { background: rgba(124,58,237,.12); color: var(--secondary); }
.badge-green    { background: rgba(5,150,105,.12);  color: var(--accent); }
.badge-orange   { background: rgba(217,119,6,.12);  color: var(--gold); }
.badge-red      { background: rgba(220,38,38,.12);  color: var(--danger); }
.badge-gray     { background: rgba(100,116,139,.12);color: var(--text-l); }

/* ── Progress Bar ──────────────────────────────────────────── */
.prog-wrap { display: flex; align-items: center; gap: 8px; }
.prog-track {
  flex: 1;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.prog-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width .5s ease;
}
.prog-label { font-size: .72rem; color: var(--text-l); white-space: nowrap; }

/* ── Form Controls ─────────────────────────────────────────── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: .78rem; font-weight: 700; color: var(--text-m); }
.form-control {
  padding:       10px 14px;
  border:        1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family:   var(--font);
  font-size:     .85rem;
  color:         var(--text);
  background:    var(--card);
  outline:       none;
  transition:    border-color var(--transition);
  width:         100%;
}
.form-control:focus { border-color: var(--primary-l); }
.form-control::placeholder { color: var(--text-l); }
select.form-control { appearance: none; cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 100px; }

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display:      inline-flex;
  align-items:  center;
  gap:          6px;
  padding:      9px 20px;
  border-radius: var(--radius-sm);
  border:       none;
  font-family:  var(--font);
  font-size:    .83rem;
  font-weight:  700;
  cursor:       pointer;
  transition:   var(--transition);
  text-decoration: none;
  white-space:  nowrap;
}
.btn:hover { opacity: .88; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary  { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white; box-shadow: 0 4px 14px rgba(30,64,175,.25); }
.btn-outline  { background: transparent; border: 1.5px solid var(--border); color: var(--text-m); }
.btn-outline:hover { border-color: var(--primary-l); color: var(--primary); background: rgba(30,64,175,.05); }
.btn-danger   { background: rgba(220,38,38,.1); color: var(--danger); border: 1px solid rgba(220,38,38,.2); }
.btn-sm       { padding: 6px 14px; font-size: .75rem; }
.btn-xs       { padding: 4px 10px; font-size: .7rem; }
.btn-block    { width: 100%; justify-content: center; }

/* ── Info Boxes ────────────────────────────────────────────── */
.info-box {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}
.info-box.tip   { background: rgba(5,150,105,.07);  border: 1px solid rgba(5,150,105,.2);  }
.info-box.note  { background: rgba(217,119,6,.07);  border: 1px solid rgba(217,119,6,.2);  }
.info-box.info  { background: rgba(30,64,175,.07);  border: 1px solid rgba(30,64,175,.15); }
.info-box.error { background: rgba(220,38,38,.07);  border: 1px solid rgba(220,38,38,.2);  }
.ib-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 1px; }
.ib-title { font-size: .82rem; font-weight: 700; margin-bottom: 3px; }
.ib-text  { font-size: .8rem; color: var(--text-m); line-height: 1.7; }

/* ── Upload Zone ───────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: rgba(30,64,175,.02);
}
.upload-zone:hover { border-color: var(--primary-l); background: rgba(30,64,175,.05); }
.upload-icon { font-size: 2.4rem; margin-bottom: 10px; }
.upload-text { font-size: .85rem; color: var(--text-l); }
.upload-text strong { color: var(--primary); }

/* ── Toast ─────────────────────────────────────────────────── */
#toast {
  position:    fixed;
  bottom:      28px;
  left:        50%;
  transform:   translateX(-50%) translateY(80px);
  background:  var(--text);
  color:       white;
  padding:     10px 22px;
  border-radius: 30px;
  font-size:   .83rem;
  font-weight: 600;
  box-shadow:  var(--shadow-lg);
  z-index:     9999;
  transition:  transform .3s cubic-bezier(.34,1.56,.64,1), opacity .3s;
  opacity:     0;
  pointer-events: none;
  white-space: nowrap;
}
#toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ── Modal ─────────────────────────────────────────────────── */
.modal-backdrop {
  position:   fixed;
  inset:      0;
  background: rgba(15,23,42,.5);
  backdrop-filter: blur(4px);
  z-index:    500;
  display:    none;
  align-items: center;
  justify-content: center;
}
.modal-backdrop.open { display: flex; }
.modal {
  background:  var(--card);
  border-radius: var(--radius-lg);
  box-shadow:  var(--shadow-lg);
  width:       min(560px, 95vw);
  max-height:  85vh;
  overflow-y:  auto;
  animation:   modalIn .3s cubic-bezier(.34,1.56,.64,1);
}
@keyframes modalIn { from{opacity:0;transform:scale(.9)} to{opacity:1;transform:scale(1)} }
.modal-header {
  padding:       20px 24px;
  border-bottom: 1px solid var(--border);
  display:       flex;
  align-items:   center;
  gap:           10px;
  font-size:     .95rem;
  font-weight:   700;
}
.modal-header .modal-close {
  margin-right: auto;
  background: transparent;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text-l);
  transition: color var(--transition);
}
.modal-header .modal-close:hover { color: var(--danger); }
.modal-body   { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }

/* ── Alert Inline ──────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: .83rem;
  margin-bottom: 14px;
}
.alert-success { background: rgba(5,150,105,.1); color: var(--accent); border: 1px solid rgba(5,150,105,.2); }
.alert-error   { background: rgba(220,38,38,.1); color: var(--danger); border: 1px solid rgba(220,38,38,.2); }
.alert-info    { background: rgba(30,64,175,.08); color: var(--primary); border: 1px solid rgba(30,64,175,.15); }

/* ── Quiz Styles ───────────────────────────────────────────── */
.quiz-q { background: rgba(30,64,175,.04); border: 1px solid rgba(30,64,175,.1); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.quiz-q .q-num { font-size: .72rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.quiz-q .q-text { font-size: .9rem; font-weight: 600; margin-bottom: 14px; line-height: 1.7; }
.q-opts { display: flex; flex-direction: column; gap: 8px; }
.q-opt {
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: white;
  cursor: pointer;
  font-family: var(--font);
  font-size: .83rem;
  color: var(--text-m);
  transition: var(--transition);
  text-align: right;
  width: 100%;
}
.q-opt:hover    { border-color: var(--primary-l); background: rgba(30,64,175,.04); }
.q-opt.selected { border-color: var(--primary);   background: rgba(30,64,175,.08); color: var(--primary); font-weight: 600; }
.q-opt.correct  { border-color: var(--accent);    background: rgba(5,150,105,.08); color: var(--accent);  font-weight: 700; }
.q-opt.wrong    { border-color: var(--danger);    background: rgba(220,38,38,.07); color: var(--danger);  font-weight: 700; }

/* ── Utility ───────────────────────────────────────────────── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-4 { margin-bottom: 16px; }
.text-sm { font-size: .82rem; }
.text-xs { font-size: .72rem; }
.text-muted { color: var(--text-l); }
.font-bold  { font-weight: 700; }
.truncate   { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-grid  { grid-template-columns: 1fr; }
  .sidebar    { display: none; }
  .main-content { padding: 16px; }
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(30,64,175,.2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(30,64,175,.35); }