/* ================================================
   Dark Theme - مدرسة عمر بن أبي سلمة المتوسطة
   ================================================ */

:root {
  --bg-primary:   #0f172a;
  --bg-secondary: #1e293b;
  --bg-card:      #1e293b;
  --bg-hover:     #334155;
  --border:       #334155;
  --text-primary: #f1f5f9;
  --text-muted:   #94a3b8;
  --text-light:   #64748b;
  --accent:       #3b82f6;
  --accent-hover: #2563eb;
  --accent-glow:  rgba(59,130,246,0.2);
  --success:      #22c55e;
  --warning:      #f59e0b;
  --danger:       #ef4444;
  --purple:       #a855f7;
  --sidebar-w:    260px;
  --topbar-h:     64px;
}

* { margin:0; padding:0; box-sizing:border-box; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
  direction: rtl;
  min-height: 100vh;
  display: flex;
}

/* ─── Sidebar ─────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  height: 100vh;
  position: fixed;
  right: 0;
  top: 0;
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: width .3s ease;
  overflow: hidden;
}

.sidebar.collapsed { width: 68px; }

/* Logo */
.sidebar-logo {
  padding: 20px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: var(--topbar-h);
}
.sidebar-logo .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
  box-shadow: 0 0 12px var(--accent-glow);
}
.sidebar-logo .logo-text { overflow: hidden; white-space: nowrap; }
.sidebar-logo .logo-text h2 { font-size: .85rem; font-weight: 700; color: var(--text-primary); }
.sidebar-logo .logo-text p  { font-size: .7rem; color: var(--text-muted); margin-top: 2px; }

/* Nav */
.sidebar-nav { flex: 1; overflow-y: auto; padding: 12px 8px; }
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.nav-group { margin-bottom: 8px; }
.nav-group-label {
  font-size: .65rem; font-weight: 700; letter-spacing: .08em;
  color: var(--text-light); padding: 8px 12px 4px;
  text-transform: uppercase; white-space: nowrap; overflow: hidden;
}
.sidebar.collapsed .nav-group-label { opacity: 0; }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 12px; border-radius: 10px;
  text-decoration: none; color: var(--text-muted);
  font-size: .85rem; font-weight: 500;
  transition: all .2s; margin-bottom: 2px;
  white-space: nowrap; overflow: hidden;
  position: relative;
}
.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid rgba(59,130,246,0.3);
}
.nav-item.active::before {
  content: '';
  position: absolute; right: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 60%;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}
.nav-item .nav-icon {
  font-size: 1.1rem; width: 22px;
  text-align: center; flex-shrink: 0;
}
.nav-item .nav-badge {
  margin-right: auto; margin-left: 0;
  background: var(--danger);
  color: #fff; font-size: .65rem;
  padding: 2px 7px; border-radius: 20px;
  font-weight: 700;
}
.nav-item .nav-label { overflow: hidden; }
.sidebar.collapsed .nav-label,
.sidebar.collapsed .nav-badge { display: none; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 9px; }

/* Sidebar Footer */
.sidebar-footer {
  padding: 12px 8px;
  border-top: 1px solid var(--border);
}
.user-card {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 10px;
  background: var(--bg-hover); overflow: hidden;
}
.user-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, #a855f7, #6d28d9);
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem; flex-shrink: 0;
}
.user-info { overflow: hidden; }
.user-info .user-name  { font-size: .82rem; font-weight: 600; color: var(--text-primary); }
.user-info .user-role  { font-size: .7rem; color: var(--text-muted); }
.sidebar.collapsed .user-info { display: none; }
.sidebar.collapsed .user-card { justify-content: center; padding: 9px; }

/* ─── Main Layout ──────────────────────────────── */
.main-wrapper {
  margin-right: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-right .3s ease;
}
.sidebar.collapsed ~ .main-wrapper { margin-right: 68px; }

/* ─── Topbar ───────────────────────────────────── */
.topbar {
  height: var(--topbar-h);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 24px; gap: 16px;
  position: sticky; top: 0; z-index: 900;
}
.topbar-toggle {
  background: none; border: none; cursor: pointer;
  color: var(--text-muted); font-size: 1.2rem;
  padding: 6px; border-radius: 8px;
  transition: all .2s;
}
.topbar-toggle:hover { background: var(--bg-hover); color: var(--text-primary); }

.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: .85rem; color: var(--text-muted);
  flex: 1;
}
.breadcrumb .bc-sep { color: var(--text-light); }
.breadcrumb .bc-current { color: var(--text-primary); font-weight: 600; }

.topbar-actions { display: flex; align-items: center; gap: 10px; }

.topbar-btn {
  background: var(--bg-hover); border: 1px solid var(--border);
  color: var(--text-muted); border-radius: 10px;
  padding: 7px 12px; font-size: .82rem; cursor: pointer;
  display: flex; align-items: center; gap: 6px;
  text-decoration: none; transition: all .2s;
  white-space: nowrap;
}
.topbar-btn:hover { border-color: var(--accent); color: var(--accent); }

.notif-btn {
  position: relative;
  background: var(--bg-hover); border: 1px solid var(--border);
  color: var(--text-muted); border-radius: 10px;
  padding: 7px 10px; font-size: 1rem; cursor: pointer;
  transition: all .2s;
}
.notif-btn:hover { border-color: var(--accent); color: var(--accent); }
.notif-dot {
  position: absolute; top: 5px; left: 5px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--danger);
  border: 2px solid var(--bg-secondary);
}

/* ─── Content ──────────────────────────────────── */
.content { flex: 1; padding: 24px; overflow-x: hidden; }

/* Page Header */
.page-header {
  display: flex; align-items: flex-start;
  justify-content: space-between; gap: 16px;
  margin-bottom: 24px;
}
.page-title h1 { font-size: 1.4rem; font-weight: 700; color: var(--text-primary); }
.page-title p  { font-size: .85rem; color: var(--text-muted); margin-top: 4px; }

/* ─── Cards ────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color .2s;
}
.card:hover { border-color: var(--accent); }

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  justify-content: space-between;
  font-weight: 600; font-size: .92rem;
}
.card-body { padding: 20px; }

/* Stat cards */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  display: flex; align-items: center; gap: 16px;
  transition: all .2s; text-decoration: none;
}
.stat-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
}
.stat-icon {
  width: 50px; height: 50px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; flex-shrink: 0;
}
.stat-icon.blue   { background: rgba(59,130,246,.15); }
.stat-icon.green  { background: rgba(34,197,94,.15); }
.stat-icon.yellow { background: rgba(245,158,11,.15); }
.stat-icon.purple { background: rgba(168,85,247,.15); }
.stat-icon.red    { background: rgba(239,68,68,.15); }
.stat-icon.cyan   { background: rgba(6,182,212,.15); }

.stat-info .stat-value { font-size: 1.6rem; font-weight: 700; color: var(--text-primary); }
.stat-info .stat-label { font-size: .8rem; color: var(--text-muted); margin-top: 2px; }

/* ─── Tables ───────────────────────────────────── */
.dark-table { width: 100%; border-collapse: collapse; font-size: .85rem; }
.dark-table thead tr { border-bottom: 2px solid var(--border); }
.dark-table thead th {
  padding: 12px 16px; text-align: right;
  color: var(--text-muted); font-weight: 600;
  font-size: .78rem; text-transform: uppercase;
  letter-spacing: .05em;
}
.dark-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background .15s;
}
.dark-table tbody tr:hover { background: var(--bg-hover); }
.dark-table tbody td { padding: 13px 16px; color: var(--text-primary); }
.dark-table tbody tr:last-child { border-bottom: none; }

/* ─── Badges ───────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 20px;
  font-size: .72rem; font-weight: 600;
}
.badge-blue   { background: rgba(59,130,246,.15); color: #60a5fa; border: 1px solid rgba(59,130,246,.3); }
.badge-green  { background: rgba(34,197,94,.15);  color: #4ade80; border: 1px solid rgba(34,197,94,.3); }
.badge-yellow { background: rgba(245,158,11,.15); color: #fbbf24; border: 1px solid rgba(245,158,11,.3); }
.badge-red    { background: rgba(239,68,68,.15);  color: #f87171; border: 1px solid rgba(239,68,68,.3); }
.badge-purple { background: rgba(168,85,247,.15); color: #c084fc; border: 1px solid rgba(168,85,247,.3); }

/* ─── Buttons ──────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px; border-radius: 10px;
  font-size: .85rem; font-weight: 600; cursor: pointer;
  border: none; text-decoration: none; transition: all .2s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 4px 14px var(--accent-glow); }
.btn-outline { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger  { background: rgba(239,68,68,.15); color: #f87171; border: 1px solid rgba(239,68,68,.3); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: .78rem; }

/* ─── Forms ────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block; font-size: .82rem; font-weight: 600;
  color: var(--text-muted); margin-bottom: 6px;
}
.form-control {
  width: 100%; padding: 10px 14px;
  background: var(--bg-primary); border: 1px solid var(--border);
  border-radius: 10px; color: var(--text-primary);
  font-size: .85rem; transition: border-color .2s;
  font-family: inherit;
}
.form-control:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-control::placeholder { color: var(--text-light); }
select.form-control { cursor: pointer; }

/* ─── Filter card ──────────────────────────────── */
.filter-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  margin-bottom: 20px;
}

/* ─── Schedule table ───────────────────────────── */
.schedule-table {
  width: 100%; border-collapse: separate;
  border-spacing: 0; font-size: .82rem;
}
.schedule-table thead th {
  background: var(--bg-hover); color: var(--text-muted);
  padding: 10px 8px; text-align: center;
  font-size: .78rem; font-weight: 700;
  letter-spacing: .04em;
  border-bottom: 2px solid var(--accent);
}
.schedule-table thead th:first-child { border-right: 2px solid var(--accent); }
.schedule-table tbody tr { transition: background .15s; }
.schedule-table tbody tr:hover { background: rgba(59,130,246,.05); }
.schedule-table tbody td {
  border: 1px solid var(--border);
  padding: 6px; text-align: center;
  vertical-align: middle;
}
.schedule-table tbody td:first-child {
  font-weight: 700; color: var(--accent);
  background: rgba(59,130,246,.05);
  white-space: nowrap;
  border-right: 2px solid var(--border);
}

/* Cell card inside schedule */
.cell-card {
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 8px;
  font-size: .76rem; line-height: 1.4;
  min-height: 50px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  transition: all .15s; cursor: default;
}
.cell-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  transform: scale(1.03);
}
.cell-card .subject { font-weight: 700; color: var(--accent); font-size: .78rem; }
.cell-card .teacher { color: var(--text-muted); font-size: .7rem; margin-top: 2px; }
.cell-card.empty { background: transparent; border-color: transparent; color: var(--text-light); }

/* Day badges */
.day-1 { color: #a855f7; }
.day-2 { color: #3b82f6; }
.day-3 { color: #22c55e; }
.day-4 { color: #f59e0b; }
.day-5 { color: #ef4444; }

/* ─── Teacher summary ──────────────────────────── */
.teacher-summary {
  background: linear-gradient(135deg, #1e3a5f, #1e293b);
  border: 1px solid rgba(59,130,246,.3);
  border-radius: 14px; padding: 20px 24px;
  margin-bottom: 20px;
  box-shadow: 0 0 20px rgba(59,130,246,.1);
}
.teacher-summary h3 { font-size: 1.2rem; font-weight: 700; }
.teacher-summary .stats { font-size: .85rem; color: var(--text-muted); margin-top: 6px; }

/* ─── List card ────────────────────────────────── */
.list-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.list-item {
  display: flex; align-items: center; gap: 14px;
  padding: 13px 18px; border-bottom: 1px solid var(--border);
  text-decoration: none; color: var(--text-primary);
  transition: background .15s;
}
.list-item:last-child { border-bottom: none; }
.list-item:hover { background: var(--bg-hover); }
.list-item .item-icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--accent-glow); border: 1px solid rgba(59,130,246,.3);
  display: flex; align-items: center; justify-content: center;
  font-size: .95rem; flex-shrink: 0;
}
.list-item .item-info .item-name  { font-size: .88rem; font-weight: 600; }
.list-item .item-info .item-meta  { font-size: .75rem; color: var(--text-muted); margin-top: 2px; }
.list-item .item-badge { margin-right: auto; margin-left: 0; }

/* ─── Alert / Flash ────────────────────────────── */
.alert {
  padding: 12px 16px; border-radius: 10px;
  font-size: .85rem; display: flex;
  align-items: center; gap: 10px; margin-bottom: 16px;
}
.alert-success { background: rgba(34,197,94,.1); border: 1px solid rgba(34,197,94,.3); color: #4ade80; }
.alert-danger  { background: rgba(239,68,68,.1);  border: 1px solid rgba(239,68,68,.3);  color: #f87171; }
.alert-warning { background: rgba(245,158,11,.1); border: 1px solid rgba(245,158,11,.3); color: #fbbf24; }
.alert-info    { background: rgba(59,130,246,.1); border: 1px solid rgba(59,130,246,.3); color: #60a5fa; }

/* ─── Footer ───────────────────────────────────── */
.footer {
  padding: 16px 24px; border-top: 1px solid var(--border);
  text-align: center; font-size: .75rem;
  color: var(--text-light);
  margin-top: auto;
}

/* ─── Scrollbar global ─────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-light); }

/* ─── Responsive ───────────────────────────────── */

/* ══ Tablet: 769px – 1024px ══ */
@media (max-width: 1024px) and (min-width: 769px) {
  .sidebar { width: 68px; }
  .sidebar .nav-label, .sidebar .nav-badge,
  .sidebar .nav-group-label, .sidebar .logo-text,
  .sidebar .user-info { display: none !important; }
  .sidebar .nav-item { justify-content: center; padding: 9px; }
  .sidebar .user-card { justify-content: center; padding: 9px; }
  .sidebar.expanded { width: var(--sidebar-w); }
  .sidebar.expanded .nav-label,
  .sidebar.expanded .nav-group-label,
  .sidebar.expanded .logo-text,
  .sidebar.expanded .user-info { display: block !important; }
  .sidebar.expanded .nav-badge { display: inline-flex !important; }
  .sidebar.expanded .nav-item { justify-content: flex-start; padding: 9px 12px; }
  .sidebar.expanded .user-card { justify-content: flex-start; padding: 10px 12px; }
  .sidebar.expanded ~ .main-wrapper { margin-right: var(--sidebar-w); }
  .main-wrapper { margin-right: 68px; }
  .content { padding: 16px; }
  .topbar { padding: 0 16px; }
}

/* ══ Mobile: ≤ 768px ══ */
@media (max-width: 768px) {
  .sidebar {
    width: var(--sidebar-w) !important;
    transform: translateX(110%);
    transition: transform .3s ease, box-shadow .3s;
    z-index: 1100;
  }
  .sidebar.mobile-open {
    transform: translateX(0);
    box-shadow: -12px 0 40px rgba(0,0,0,.65);
  }
  .sidebar-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,.55); z-index: 1050;
    backdrop-filter: blur(2px);
  }
  .sidebar-overlay.active { display: block; }
  .main-wrapper { margin-right: 0 !important; }
  .topbar { padding: 0 12px; gap: 8px; height: 54px; }
  .topbar-btn span { display: none; }
  .breadcrumb span:not(.bc-current) { display: none; }
  .content { padding: 12px; }
  .page-header { flex-direction: column; gap: 10px; }
  .stats-grid { grid-template-columns: 1fr 1fr !important; gap: 10px !important; }
  .stat-card { padding: 14px; }
  .stat-icon { width: 42px; height: 42px; }
  .stat-info .stat-value { font-size: 1.3rem; }
  .footer { padding: 10px; font-size: .7rem; }
}

/* ─── Animations ───────────────────────────────── */
@keyframes fadeIn {
  from { opacity:0; transform:translateY(8px); }
  to   { opacity:1; transform:translateY(0); }
}
.content > * { animation: fadeIn .3s ease forwards; }