@import url('https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/Vazirmatn-font-face.css');

:root {
  --sidebar-width: 260px; --topbar-height: 70px;
  --radius-sm: 10px; --radius-md: 18px; --radius-lg: 24px;
  --transition: transform 0.15s ease, opacity 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

[data-theme="dark"] {
  --bg-gradient: radial-gradient(circle at top left, #1e1b4b 0%, transparent 45%), linear-gradient(135deg, #020617 0%, #090d16 100%);
  --sidebar-bg: #0f172a; --topbar-bg: rgba(2, 6, 23, 0.75); --glass-bg: rgba(255, 255, 255, 0.04);
  --card-bg: rgba(15, 23, 42, 0.75); --modal-bg: #0f172a; --text-primary: #f8fafc; --text-secondary: #cbd5e1; --text-muted: #64748b;
  --primary: #2563eb; --primary-hover: #1d4ed8; --primary-light: rgba(37, 99, 235, 0.18);
  --secondary: #7c3aed; --success: #10b981; --success-light: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b; --warning-light: rgba(245, 158, 11, 0.15); --danger: #ef4444; --danger-light: rgba(239, 68, 68, 0.15);
  --border-color: rgba(255, 255, 255, 0.08); --table-header-bg: rgba(255, 255, 255, 0.04); --table-hover-bg: rgba(255, 255, 255, 0.04);
  --bg-hover: rgba(255, 255, 255, 0.08);
}

[data-theme="light"] {
  --bg-gradient: radial-gradient(circle at top left, #e0e7ff 0%, transparent 50%), linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
  --sidebar-bg: rgba(255, 255, 255, 0.85); --topbar-bg: rgba(255, 255, 255, 0.8); --glass-bg: rgba(255, 255, 255, 0.65);
  --card-bg: rgba(255, 255, 255, 0.85); --modal-bg: #ffffff; --text-primary: #0f172a; --text-secondary: #475569; --text-muted: #94a3b8;
  --primary: #2563eb; --primary-hover: #1d4ed8; --primary-light: rgba(37, 99, 235, 0.12);
  --secondary: #7c3aed; --success: #10b981; --success-light: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b; --warning-light: rgba(245, 158, 11, 0.12); --danger: #ef4444; --danger-light: rgba(239, 68, 68, 0.12);
  --border-color: rgba(0, 0, 0, 0.08); --table-header-bg: rgba(241, 245, 249, 0.8); --table-hover-bg: rgba(241, 245, 249, 0.6);
  --bg-hover: rgba(2, 6, 23, 0.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Vazirmatn', -apple-system, BlinkMacSystemFont, sans-serif; -webkit-font-smoothing: antialiased; }
body { direction: rtl; text-align: right; background: var(--bg-gradient); color: var(--text-primary); min-height: 100vh; display: flex; overflow-x: hidden; }
.app-container { display: flex; width: 100vw; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-width); background: var(--sidebar-bg);
  border-left: 1px solid var(--border-color);
  display: flex; flex-direction: column;
  position: fixed; top: 0; bottom: 0; right: 0; z-index: 100; transition: var(--transition);
}
.sidebar-header { padding: 24px 20px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--border-color); }
.university-logo { width: 44px; height: 44px; background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); color: #fff; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; box-shadow: 0 8px 20px -4px rgba(37, 99, 235, 0.4); }
.university-info h1 { font-size: 1.05rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.01em; }

.nav-menu { padding: 16px 12px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: var(--radius-sm); color: var(--text-secondary); font-weight: 500; font-size: 0.92rem; cursor: pointer; transition: var(--transition); border: 1px solid transparent; }
.nav-item:hover { background: var(--primary-light); color: var(--primary); transform: translateX(-3px); }
.nav-item.active { background: var(--primary); color: #fff; font-weight: 700; box-shadow: 0 6px 18px rgba(37, 99, 235, 0.35); }
.nav-item svg { width: 20px; height: 20px; stroke-width: 2; }

.main-wrapper { margin-right: var(--sidebar-width); flex: 1; display: flex; flex-direction: column; min-height: 100vh; min-width: 0; width: 100%; }
.topbar {
  height: var(--topbar-height); background: var(--topbar-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px; position: sticky; top: 0; z-index: 90;
}
.topbar-right, .topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-left { gap: 14px; }
.page-title { font-size: 1.25rem; font-weight: 800; color: var(--text-primary); }

.theme-toggle-btn { background: var(--glass-bg); border: 1px solid var(--border-color); color: var(--text-secondary); width: 42px; height: 42px; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: var(--transition); }
.theme-toggle-btn:hover { background: var(--primary-light); color: var(--primary); transform: scale(1.05); }

.user-badge { display: flex; align-items: center; gap: 12px; background: var(--glass-bg); padding: 6px 16px; border-radius: var(--radius-md); border: 1px solid var(--border-color); transition: var(--transition); cursor: pointer; }
.user-badge:hover { background: var(--bg-hover); border-color: var(--primary); transform: translateY(-1px); }
.user-avatar { width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 0.88rem; box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3); }

.content-area { padding: 32px 36px; flex: 1; max-width: 1440px; width: 100%; margin: 0 auto; }
.view-section { display: none; }
.view-section.active { display: block; }

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 32px; }
.stat-card {
  background: var(--card-bg); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 24px; display: flex; align-items: center; gap: 18px; transition: var(--transition);
}
.stat-card:hover { border-color: var(--primary); }
.stat-icon { width: 54px; height: 54px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; }
.stat-icon.students { background: var(--primary-light); color: var(--primary); border: 1px solid rgba(37, 99, 235, 0.3); }
.stat-icon.professors { background: rgba(124, 58, 237, 0.15); color: var(--secondary); border: 1px solid rgba(124, 58, 237, 0.3); }
.stat-icon.courses { background: rgba(59, 130, 246, 0.15); color: #3b82f6; border: 1px solid rgba(59, 130, 246, 0.3); }
.stat-icon.enrollments { background: var(--warning-light); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.3); }
.stat-details h3 { font-size: 0.85rem; color: var(--text-muted); font-weight: 600; }
.stat-value { font-size: 1.85rem; font-weight: 900; color: var(--text-primary); margin-top: 4px; letter-spacing: -0.02em; }

.card-container { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 28px; margin-bottom: 24px; }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; flex-wrap: wrap; gap: 16px; }
.card-title { font-size: 1.15rem; font-weight: 800; color: var(--text-primary); display: flex; align-items: center; gap: 10px; }
.header-actions { display: flex; align-items: center; gap: 12px; }

.search-box { position: relative; width: 280px; }
.search-box input { width: 100%; padding: 10px 42px 10px 16px; border-radius: 9999px; border: 1px solid var(--border-color); background: var(--glass-bg); color: var(--text-primary); font-size: 0.88rem; outline: none; transition: var(--transition); }
.search-box input::placeholder { color: var(--text-muted); }
.search-box input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-light); }
.search-box svg { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); width: 18px; height: 18px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 20px; border-radius: var(--radius-sm); font-size: 0.88rem; font-weight: 700; cursor: pointer; transition: var(--transition); border: 1px solid transparent; white-space: nowrap; position: relative; overflow: hidden; }
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--primary); color: #fff; border: 1px solid rgba(255, 255, 255, 0.15); box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.35); }
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.5); transform: translateY(-1px); }
.btn-secondary { background: var(--glass-bg); border-color: var(--border-color); color: var(--text-primary); }
.btn-secondary:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; border: 1px solid rgba(239, 68, 68, 0.3); box-shadow: 0 4px 14px 0 rgba(239, 68, 68, 0.35); }
.btn-danger:hover { background: #dc2626; box-shadow: 0 6px 20px 0 rgba(239, 68, 68, 0.5); }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; border-radius: 9999px; }

.table-responsive { width: 100%; overflow-x: auto; border-radius: var(--radius-sm); border: 1px solid var(--border-color); }
table { width: 100%; border-collapse: collapse; text-align: right; }
th { background: var(--table-header-bg); color: var(--text-muted); font-weight: 700; padding: 14px 18px; font-size: 0.82rem; letter-spacing: 0.02em; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 10; }
td { padding: 14px 18px; border-bottom: 1px solid var(--border-color); font-size: 0.88rem; color: var(--text-primary); vertical-align: middle; }
tr:hover td { background: var(--table-hover-bg); }

.badge { display: inline-flex; align-items: center; padding: 4px 12px; border-radius: 20px; font-size: 0.76rem; font-weight: 700; }
.badge-success { background: var(--success-light); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-warning { background: var(--warning-light); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-danger { background: var(--danger-light); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-primary { background: var(--primary-light); color: var(--primary); border: 1px solid rgba(37, 99, 235, 0.3); }

.modal-backdrop {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(2, 6, 23, 0.75);
  z-index: 1000; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.2s ease;
}
.modal-backdrop.active { opacity: 1; pointer-events: auto; }
.modal-box {
  background: var(--modal-bg); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 90%; max-width: 540px; max-height: 88vh; overflow-y: auto; padding: 30px; color: var(--text-primary);
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; border-bottom: 1px solid var(--border-color); padding-bottom: 14px; }
.modal-title { font-size: 1.15rem; font-weight: 800; color: var(--text-primary); }
.close-btn { background: transparent; border: none; color: var(--text-muted); font-size: 1.5rem; cursor: pointer; transition: var(--transition); line-height: 1; }
.close-btn:hover { color: var(--danger); }

.form-group { margin-bottom: 20px; position: relative; }
.form-label { display: block; font-size: 0.85rem; font-weight: 700; margin-bottom: 6px; color: var(--text-secondary); }
.form-control { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border-color); background: var(--glass-bg); color: var(--text-primary); font-size: 0.9rem; outline: none; transition: var(--transition); }
.form-control option { background: var(--modal-bg); color: var(--text-primary); }
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-light); }
.form-actions { display: flex; justify-content: flex-end; gap: 12px; margin-top: 26px; }

.toast-container { position: fixed; bottom: 24px; left: 24px; z-index: 2000; display: flex; flex-direction: column; gap: 10px; }
.toast { display: flex; align-items: center; gap: 12px; background: var(--sidebar-bg); border: 1px solid var(--border-color); padding: 14px 22px; border-radius: var(--radius-md); font-size: 0.88rem; font-weight: 700; color: var(--text-primary); min-width: 320px; }
.toast.toast-success { border-right: 4px solid var(--success); }
.toast.toast-danger { border-right: 4px solid var(--danger); }
.toast.toast-warning { border-right: 4px solid var(--warning); }
.toast.toast-info { border-right: 4px solid var(--primary); }

.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
.detail-item { background: var(--glass-bg); padding: 12px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border-color); }
.detail-label { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 4px; }
.detail-value { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); }

.empty-state { text-align: center; padding: 48px 24px; color: var(--text-muted); }
.empty-state svg { width: 56px; height: 56px; color: var(--text-muted); margin-bottom: 14px; opacity: 0.7; }
.empty-state h4 { font-size: 1.1rem; font-weight: 800; margin-bottom: 6px; color: var(--text-primary); }
.empty-state p { font-size: 0.88rem; color: var(--text-secondary); }

.mobile-menu-btn { display: none; background: var(--glass-bg); border: 1px solid var(--border-color); color: var(--text-primary); width: 42px; height: 42px; border-radius: var(--radius-sm); align-items: center; justify-content: center; cursor: pointer; transition: var(--transition); }
.mobile-menu-btn:hover { background: var(--primary-light); color: var(--primary); }
.sidebar-backdrop { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(2, 6, 23, 0.6); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); z-index: 95; opacity: 0; pointer-events: none; transition: opacity 0.25s ease; }
body.sidebar-open .sidebar-backdrop { opacity: 1; pointer-events: auto; }

:focus-visible, .nav-item:focus-visible, .btn:focus-visible, .theme-toggle-btn:focus-visible, .close-btn:focus-visible, .mobile-menu-btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.table-responsive::-webkit-scrollbar { height: 6px; width: 6px; }
.table-responsive::-webkit-scrollbar-track { background: var(--glass-bg); }
.table-responsive::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

@media (max-width: 1200px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) {
  .mobile-menu-btn { display: inline-flex; }
  .sidebar { width: 260px; transform: translateX(100%); z-index: 100; }
  body.sidebar-open .sidebar { transform: translateX(0); }
  .university-info, .nav-item span { display: block !important; }
  .sidebar-header { justify-content: flex-start !important; padding: 24px 20px !important; }
  .nav-item { justify-content: flex-start !important; padding: 12px 16px !important; }
  .main-wrapper { margin-right: 0 !important; width: 100% !important; }
  .topbar { padding: 0 16px; }
  .content-area { padding: 16px; }
  .header-actions { width: 100%; flex-direction: column; align-items: stretch; }
  .search-box { width: 100%; }
  .btn { min-height: 44px; }
  .stats-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) { .stat-card, .card-container { padding: 18px; } .modal-box { padding: 20px; width: 95%; } }