@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=Plus+Jakarta+Sans:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

:root {
  --blue-primary: #0B42A1;
  --blue-dark: #052466;
  --blue-light: #3B6FD4;
  --orange-primary: #FF5B00;
  --orange-hover: #E04D00;
  --white: #FFFFFF;
  --bg-page: #F4F7FD;
  --bg-card: #FFFFFF;
  --border-color: #DCE4F5;
  --text-main: #1A2340;
  --text-muted: #64748B;
  --success-color: #10B981;
  --warning-color: #F59E0B;
  --danger-color: #EF4444;
  --purple-color: #8B5CF6;
  --shadow-card: 0 4px 16px rgba(11,66,161,0.08);
  --shadow-hover: 0 8px 24px rgba(11,66,161,0.15);
  --radius-btn: 4px;
  --radius-card: 8px;
  --radius-panel: 10px;
}

body {
  font-family: 'Plus Jakarta Sans', 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  padding: 0;
  color: var(--text-main);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.01em;
}

* { box-sizing: border-box; }
a { color: var(--blue-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 260px; min-height: 100vh;
  background: linear-gradient(180deg, #052466 0%, #031745 100%);
  position: fixed; display: flex; flex-direction: column; justify-content: space-between;
  box-shadow: 2px 0 12px rgba(0,0,0,0.15); z-index: 100;
}
.main-content { margin-left: 260px; flex: 1; background: var(--bg-page); min-height: 100vh; }
.topbar {
  background: var(--white); border-bottom: 1px solid var(--border-color);
  padding: 0 32px; height: 68px; display:flex; align-items:center;
  justify-content:space-between; box-shadow: 0 2px 8px rgba(11,66,161,0.04);
}
.topbar-title { font-weight: 800; color: var(--blue-dark); font-size: 20px; }

/* Sidebar Nav (16px Font, SVG Icons, High-contrast Active) */
.sidebar-brand { padding: 24px 20px 20px 20px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.sidebar-nav { display: flex; flex-direction: column; padding: 16px 12px; gap: 4px; flex: 1; }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; color: rgba(255,255,255,0.72);
  text-decoration: none; font-size: 16px; font-weight: 600;
  border-radius: 6px; border-left: 4px solid transparent;
  transition: all 0.22s ease-in-out;
}
.nav-item:hover {
  background: rgba(255,255,255,0.10); color: var(--white);
  text-decoration: none; transform: translateX(3px);
}
.nav-item.active {
  background: linear-gradient(90deg, rgba(255,91,0,0.22) 0%, rgba(255,255,255,0.08) 100%);
  color: var(--white); border-left-color: var(--orange-primary);
  font-weight: 700; text-decoration: none;
}
.nav-icon { stroke: rgba(255,255,255,0.7); flex-shrink: 0; transition: stroke 0.22s; }
.nav-item:hover .nav-icon, .nav-item.active .nav-icon { stroke: var(--orange-primary); }

.sidebar-user {
  padding: 16px 20px; border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(0,0,0,0.2);
}
.sidebar-user .u-name { font-size: 14px; font-weight: 700; color: #fff; }
.sidebar-user .u-role { font-size: 11px; color: rgba(255,255,255,0.55); margin-top: 2px; }
.sidebar-user .btn-logout { color: rgba(255,255,255,0.6); padding: 6px; border-radius: 4px; transition: all 0.2s; }
.sidebar-user .btn-logout:hover { color: var(--danger-color); background: rgba(255,255,255,0.1); }

/* Cards & Widgets */
.card {
  background: var(--bg-card); border-radius: var(--radius-card);
  box-shadow: var(--shadow-card); padding: 24px;
  border: 1px solid var(--border-color); transition: all 0.25s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.stat-card { text-align:center; }
.stat-card .stat-value { font-size: 34px; font-weight: 800; color: var(--blue-primary); line-height: 1.1; }
.stat-card .stat-label { font-size: 13px; color: var(--text-muted); margin-top: 6px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 20px; border-radius: var(--radius-btn); font-weight: 700; font-size: 14px;
  border: none; cursor: pointer; transition: all 0.22s ease; text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--blue-primary); color: var(--white); }
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); color: var(--white); }
.btn-orange { background: var(--orange-primary); color: var(--white); }
.btn-orange:hover { background: var(--orange-hover); color: var(--white); transform: translateY(-1px); }
.btn-success { background: var(--success-color); color: var(--white); }
.btn-success:hover { background: #059669; color: var(--white); }
.btn-danger { background: var(--danger-color); color: var(--white); }
.btn-danger:hover { background: #DC2626; color: var(--white); }
.btn-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-main); }
.btn-outline:hover { border-color: var(--blue-primary); color: var(--blue-primary); background: #F8FAFF; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-lg { padding: 13px 30px; font-size: 16px; }

/* Attendance Excel Toggle Grid (Strict Horizontal Flex Row) */
.attendance-grid-table td { padding: 8px 12px; vertical-align: middle; }
.toggle-btn-group {
  display: inline-flex !important; flex-direction: row !important;
  align-items: center !important; justify-content: center !important;
  gap: 4px !important; white-space: nowrap !important;
  background: #F1F5F9; padding: 4px; border-radius: 6px; border: 1px solid var(--border-color);
}
.toggle-btn {
  display: inline-flex !important; align-items: center !important; justify-content: center !important;
  padding: 6px 12px !important; border-radius: 4px !important; font-size: 12px !important; font-weight: 700 !important;
  border: none !important; cursor: pointer !important; transition: all 0.15s !important; background: transparent; color: var(--text-muted);
  white-space: nowrap !important; line-height: 1 !important;
}
.toggle-btn.btn-present.active { background: var(--success-color); color: #fff; box-shadow: 0 2px 6px rgba(16,185,129,0.3); }
.toggle-btn.btn-excused.active { background: var(--warning-color); color: #fff; box-shadow: 0 2px 6px rgba(245,158,11,0.3); }
.toggle-btn.btn-unexcused.active { background: var(--danger-color); color: #fff; box-shadow: 0 2px 6px rgba(239,68,68,0.3); }

/* Timetable Canvas Board */
.timetable-container { overflow-x: auto; margin-top: 16px; }
.timetable-grid { min-width: 1000px; display: grid; grid-template-columns: 140px repeat(7, 1fr); gap: 1px; background: var(--border-color); border-radius: 8px; overflow: hidden; border: 1px solid var(--border-color); }
.timetable-header { background: var(--blue-dark); color: #fff; font-weight: 700; font-size: 14px; text-align: center; padding: 12px; }
.time-col-header { background: #E2E8F0; color: var(--blue-dark); font-weight: 700; font-size: 13px; text-align: center; padding: 12px; display: flex; align-items: center; justify-content: center; }
.timetable-cell { background: #fff; min-height: 110px; padding: 8px; vertical-align: top; transition: background 0.2s; }
.timetable-cell:hover { background: #F8FAFF; }
.timetable-card {
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
  border-left: 4px solid var(--blue-primary); border-radius: 6px;
  padding: 10px; font-size: 12px; cursor: grab; transition: all 0.2s;
  box-shadow: 0 2px 8px rgba(11,66,161,0.08); margin-bottom: 6px;
}
.timetable-card:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(11,66,161,0.18); }
.timetable-card .c-title { font-weight: 800; color: var(--blue-dark); font-size: 13px; margin-bottom: 4px; }
.timetable-card .c-teacher { color: var(--text-main); font-weight: 600; margin-bottom: 2px; }
.timetable-card .c-room { color: var(--text-muted); font-size: 11px; }

/* Tables (Excel style) */
.table-responsive { overflow-x: auto; width: 100%; border-radius: var(--radius-card); border: 1px solid var(--border-color); }
.excel-table { width:100%; border-collapse:collapse; font-size: 14px; margin: 0; }
.excel-table th { background: #F0F5FF; border-bottom: 2px solid var(--border-color); border-right: 1px solid var(--border-color); padding: 12px 14px; font-weight: 700; color: var(--blue-dark); text-align:left; white-space:nowrap; }
.excel-table th:last-child { border-right: none; }
.excel-table td { border-bottom: 1px solid var(--border-color); border-right: 1px solid var(--border-color); padding: 11px 14px; color: var(--text-main); vertical-align: middle; }
.excel-table td:last-child { border-right: none; }
.excel-table tbody tr:hover td { background: #F8FAFF; }
.excel-table tbody tr:nth-child(even) td { background: #FAFCFF; }

/* Status Badges */
.badge { display:inline-block; padding: 4px 12px; border-radius: 4px; font-size: 12px; font-weight: 700; }
.badge-success { background: #D1FAE5; color: #065F46; }
.badge-warning { background: #FEF3C7; color: #92400E; }
.badge-info { background: #DBEAFE; color: #1E40AF; }
.badge-purple { background: #EDE9FE; color: #5B21B6; }
.badge-danger { background: #FEE2E2; color: #991B1B; }

/* Flash messages */
.flash { padding: 14px 18px; border-radius: var(--radius-card); margin-bottom: 20px; font-weight: 600; font-size: 14px; }
.flash-success { background: #D1FAE5; color: #065F46; border-left: 4px solid var(--success-color); }
.flash-error { background: #FEE2E2; color: #991B1B; border-left: 4px solid var(--danger-color); }

/* Modal */
.modal-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,0.5); z-index:1000; justify-content:center; align-items:center; backdrop-filter: blur(4px); }
.modal-overlay.open { display:flex; animation: fadeIn 0.2s ease-out; }
.modal-box { background: var(--white); border-radius: var(--radius-panel); padding: 24px; width: min(100% - 24px, 650px); max-height: 90vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(11,66,161,0.25); animation: slideUp 0.3s ease-out; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; border-bottom: 1px solid var(--border-color); padding-bottom: 16px; }
.modal-header h3 { font-size: 20px; font-weight: 800; color: var(--blue-dark); margin: 0; }
.close-btn { background: none; border: none; font-size: 24px; color: var(--text-muted); cursor: pointer; line-height: 1; padding: 0; }
.close-btn:hover { color: var(--danger-color); }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes pulseGlow { 0% { box-shadow: 0 0 0 0 rgba(255,91,0,0.4); } 70% { box-shadow: 0 0 0 12px rgba(255,91,0,0); } 100% { box-shadow: 0 0 0 0 rgba(255,91,0,0); } }

.card-hover-effect {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
.card-hover-effect:hover {
  transform: translateY(-5px) scale(1.01) !important;
  box-shadow: 0 16px 36px rgba(11, 66, 161, 0.18) !important;
}

.btn-animate {
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
.btn-animate:hover {
  transform: translateY(-2px) !important;
}

/* Modal Overlay Base Rules - Fixes Admin Click Block Issue */
.modal-overlay {
  display: none !important;
  pointer-events: none !important;
  position: fixed !important;
  inset: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  z-index: 99999 !important;
}
.modal-overlay.open {
  display: flex !important;
  pointer-events: auto !important;
}

/* Print Styles for Timetable Grid */
@media print {
  body { background: #FFFFFF !important; color: #000000 !important; }
  .sidebar, .navbar, .topbar, .navbar-vertical, .page-wrapper > div > div:first-child,
  .btn, button, select, label, .modal-overlay, #liveAlertMsg, #liveToast {
    display: none !important;
  }
  .page-wrapper { margin-left: 0 !important; padding: 0 !important; width: 100% !important; }
  #shift-panorama-view { display: block !important; width: 100% !important; }
  #shift-panorama-view table { width: 100% !important; border: 2px solid #000000 !important; }
  #shift-panorama-view th, #shift-panorama-view td { border: 1px solid #000000 !important; color: #000000 !important; }
}