/* ============================================================
   ScholarTrack SIAKAD - Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Brand Colors */
  --primary: #2563EB;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --secondary: #7c3aed;
  --secondary-light: #ede9fe;
  --accent: #0891b2;
  --success: #059669;
  --success-light: #d1fae5;
  --warning: #d97706;
  --warning-light: #fef3c7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --info: #0284c7;
  --info-light: #e0f2fe;

  /* Neutral */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* Sidebar */
  --sidebar-width: 260px;
  --sidebar-bg: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  --sidebar-text: #94a3b8;
  --sidebar-active: #2563EB;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Border */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadow */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.12), 0 4px 8px rgba(0,0,0,.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,.15);

  /* Typography */
  --font: 'Inter', system-ui, sans-serif;
  --header-height: 64px;
}

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

html { font-size: 14px; }

body {
  font-family: var(--font);
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }

/* ===== LAYOUT ===== */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform .3s ease;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-brand {
  padding: 20px var(--space-lg);
  border-bottom: 1px solid rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.brand-sub {
  font-size: 10px;
  color: var(--sidebar-text);
  letter-spacing: .05em;
}

.sidebar-section {
  padding: var(--space-md) var(--space-sm) var(--space-sm);
}

.sidebar-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--gray-500);
  padding: 0 12px;
  margin-bottom: var(--space-xs);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--sidebar-text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
  margin-bottom: 2px;
  position: relative;
}

.nav-item:hover {
  background: rgba(255,255,255,.06);
  color: #fff;
}

.nav-item.active {
  background: var(--primary);
  color: #fff;
}

.nav-item .nav-icon {
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 15px;
  flex-shrink: 0;
}

.nav-item.active .nav-icon {
  background: rgba(255,255,255,.15);
}

.nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

.sidebar-footer {
  margin-top: auto;
  padding: var(--space-md);
  border-top: 1px solid rgba(255,255,255,.08);
}

.user-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: var(--space-sm) 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background .2s;
}
.user-card:hover { background: rgba(255,255,255,.06); }

.user-avatar {
  width: 36px; height: 36px;
  border-radius: var(--radius-full);
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 13px;
  flex-shrink: 0;
}

.user-info { flex: 1; min-width: 0; }
.user-name {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.user-role {
  font-size: 11px;
  color: var(--sidebar-text);
}

/* ===== MAIN CONTENT ===== */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ===== TOP HEADER ===== */
.top-header {
  height: var(--header-height);
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  flex: 1;
}

.header-subtitle {
  font-size: 13px;
  color: var(--gray-500);
  font-weight: 400;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.search-box {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  min-width: 240px;
}

.search-box input {
  border: none;
  background: transparent;
  font-family: var(--font);
  font-size: 13px;
  color: var(--gray-800);
  outline: none;
  flex: 1;
}

.search-box input::placeholder { color: var(--gray-400); }

.icon-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .2s;
  font-size: 16px;
  color: var(--gray-600);
  position: relative;
}
.icon-btn:hover { background: var(--gray-100); border-color: var(--gray-300); }

.notif-dot {
  position: absolute;
  top: 6px; right: 6px;
  width: 8px; height: 8px;
  background: var(--danger);
  border-radius: 50%;
  border: 2px solid #fff;
}

/* ===== PAGE CONTENT ===== */
.page-content {
  padding: var(--space-xl);
  flex: 1;
}

/* ===== PAGE HEADER ===== */
.page-header {
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
}

.page-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--gray-900);
}

.page-desc {
  font-size: 14px;
  color: var(--gray-500);
  margin-top: 4px;
}

.page-actions {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-secondary { background: var(--secondary); color: #fff; }
.btn-secondary:hover { background: #6d28d9; transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #047857; transform: translateY(-1px); }

.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { background: #b45309; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-light); }

.btn-ghost {
  background: transparent;
  color: var(--gray-600);
  border: 1.5px solid var(--gray-200);
}
.btn-ghost:hover { background: var(--gray-100); color: var(--gray-800); }

.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }
.btn-icon { padding: 9px; }

/* ===== CARDS ===== */
.card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  overflow: hidden;
}

.card-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-900);
}

.card-body { padding: var(--space-lg); }

/* ===== STAT CARDS ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.stat-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  transition: transform .2s, box-shadow .2s;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.stat-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-icon.blue { background: var(--primary-light); }
.stat-icon.purple { background: var(--secondary-light); }
.stat-icon.green { background: var(--success-light); }
.stat-icon.yellow { background: var(--warning-light); }
.stat-icon.red { background: var(--danger-light); }
.stat-icon.cyan { background: var(--info-light); }

.stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 4px;
}

.stat-change {
  font-size: 12px;
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}
.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* ===== TABLE ===== */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

thead th {
  background: var(--gray-50);
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--gray-500);
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--gray-100);
  transition: background .15s;
}
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--gray-50); }

tbody td {
  padding: 13px 16px;
  font-size: 13px;
  color: var(--gray-700);
}

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-secondary { background: var(--secondary-light); color: var(--secondary); }
.badge-gray { background: var(--gray-100); color: var(--gray-600); }

/* ===== FORM ===== */
.form-group { margin-bottom: var(--space-md); }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 9px 13px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: 13px;
  color: var(--gray-800);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.form-control::placeholder { color: var(--gray-400); }

select.form-control { cursor: pointer; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-md);
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  transition: all .25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: #fff;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(.95) translateY(10px);
  transition: transform .25s ease;
}
.modal-overlay.active .modal { transform: scale(1) translateY(0); }

.modal-lg { max-width: 800px; }
.modal-sm { max-width: 440px; }

.modal-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--gray-900);
}

.modal-close {
  width: 32px; height: 32px;
  border-radius: var(--radius-md);
  border: none;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 16px;
  color: var(--gray-500);
  transition: all .2s;
}
.modal-close:hover { background: var(--gray-200); color: var(--gray-800); }

.modal-body { padding: var(--space-lg); }
.modal-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-sm);
}

/* ===== TABS ===== */
.tabs {
  display: flex;
  gap: 2px;
  background: var(--gray-100);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: var(--space-lg);
}

.tab-btn {
  flex: 1;
  padding: 8px 16px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-500);
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
}
.tab-btn.active {
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.tab-btn:hover:not(.active) { color: var(--gray-700); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ===== FILTER BAR ===== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.filter-search {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: #fff;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 7px 13px;
  flex: 1;
  min-width: 200px;
}
.filter-search input {
  border: none;
  outline: none;
  font-family: var(--font);
  font-size: 13px;
  color: var(--gray-800);
  flex: 1;
  background: transparent;
}
.filter-search input::placeholder { color: var(--gray-400); }
.filter-search .icon { color: var(--gray-400); font-size: 15px; }

/* ===== TOAST ===== */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--gray-900);
  color: #fff;
  padding: 14px 18px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  min-width: 300px;
  max-width: 420px;
  font-size: 13px;
  font-weight: 500;
  animation: slideIn .3s ease;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.warning { border-left: 4px solid var(--warning); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.info { border-left: 4px solid var(--info); }

.toast-icon { font-size: 18px; flex-shrink: 0; }
.toast-text { flex: 1; }

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

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

/* ===== MISC UTILITIES ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--space-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.text-sm { font-size: 12px; }
.text-muted { color: var(--gray-500); }
.text-bold { font-weight: 700; }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.avatar {
  width: 36px; height: 36px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
}

/* ===== PROGRESS BAR ===== */
.progress-bar {
  height: 8px;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: var(--radius-full);
  transition: width .5s ease;
}
.progress-fill.green { background: var(--success); }
.progress-fill.yellow { background: var(--warning); }
.progress-fill.red { background: var(--danger); }

/* ===== SCHEDULE GRID ===== */
.schedule-grid {
  display: grid;
  gap: 1px;
  background: var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
}

.schedule-cell {
  background: #fff;
  padding: var(--space-sm);
  min-height: 80px;
}

.schedule-header-cell {
  background: var(--gray-800);
  color: #fff;
  padding: 10px var(--space-sm);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
}

.schedule-time-cell {
  background: var(--gray-50);
  padding: 10px var(--space-sm);
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-500);
  text-align: right;
}

.schedule-lesson {
  background: var(--primary-light);
  color: var(--primary);
  border-left: 3px solid var(--primary);
  border-radius: 6px;
  padding: 5px 8px;
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 3px;
}

.schedule-lesson.green { background: var(--success-light); color: var(--success); border-color: var(--success); }
.schedule-lesson.yellow { background: var(--warning-light); color: var(--warning); border-color: var(--warning); }
.schedule-lesson.purple { background: var(--secondary-light); color: var(--secondary); border-color: var(--secondary); }
.schedule-lesson.conflict { background: var(--danger-light); color: var(--danger); border-color: var(--danger); }

/* ===== CHART PLACEHOLDER ===== */
.chart-container {
  position: relative;
  width: 100%;
  height: 250px;
  display: flex;
  align-items: flex-end;
  gap: 12px;
  padding: 20px 0 0;
}

.chart-bar-group {
  flex: 1;
  display: flex;
  align-items: flex-end;
  gap: 4px;
}

.chart-bar {
  flex: 1;
  border-radius: 6px 6px 0 0;
  transition: opacity .2s;
  cursor: pointer;
  min-width: 10px;
}
.chart-bar:hover { opacity: .8; }

.chart-labels {
  display: flex;
  gap: 12px;
  margin-top: 10px;
}
.chart-label {
  flex: 1;
  text-align: center;
  font-size: 11px;
  color: var(--gray-500);
  font-weight: 600;
}

/* ===== DONUT CHART ===== */
.donut-chart {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}

.donut-center {
  position: absolute;
  inset: 28px;
  background: #fff;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.donut-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1;
}

.donut-label {
  font-size: 10px;
  color: var(--gray-500);
  font-weight: 600;
}

/* ===== TIMELINE ===== */
.timeline { padding: var(--space-sm) 0; }
.timeline-item {
  display: flex;
  gap: var(--space-md);
  padding-bottom: var(--space-lg);
  position: relative;
}
.timeline-item:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 17px;
  top: 35px;
  bottom: 0;
  width: 2px;
  background: var(--gray-200);
}
.timeline-dot {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.timeline-body { flex: 1; }
.timeline-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-900);
}
.timeline-meta {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 2px;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
}
.empty-icon { font-size: 48px; margin-bottom: var(--space-md); opacity: .5; }
.empty-title { font-size: 16px; font-weight: 700; color: var(--gray-700); }
.empty-desc { font-size: 13px; color: var(--gray-500); margin-top: 6px; }

/* ===== LOGIN PAGE ===== */
.login-page {
  min-height: 100vh;
  display: flex;
  background: linear-gradient(135deg, #1e293b 0%, #1e3a8a 50%, #1e293b 100%);
  position: relative;
  overflow: hidden;
}

.login-bg-decor {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.decor-circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(37,99,235,.15);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.login-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px;
  color: #fff;
}

.login-right {
  width: 480px;
  background: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 50px;
}

.login-logo {
  width: 80px; height: 80px;
  background: var(--primary);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  margin-bottom: var(--space-lg);
  box-shadow: 0 20px 40px rgba(37,99,235,.4);
}

.login-brand {
  font-size: 32px;
  font-weight: 800;
  line-height: 1;
}

.login-brand-sub {
  font-size: 14px;
  opacity: .7;
  margin-top: 6px;
}

.login-tagline {
  margin-top: 40px;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  max-width: 400px;
  text-align: center;
}

.login-features {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  max-width: 360px;
}

.login-feature {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  background: rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.12);
}

.login-feature-icon {
  width: 36px; height: 36px;
  background: rgba(255,255,255,.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.login-form-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.login-form-sub {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 32px;
}

.login-form { width: 100%; }

.role-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.role-btn {
  padding: 10px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  background: #fff;
  cursor: pointer;
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-600);
  transition: all .2s;
  font-family: var(--font);
}

.role-btn.active {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}

.role-btn div:first-child { font-size: 20px; margin-bottom: 4px; }

.input-group {
  position: relative;
  margin-bottom: var(--space-md);
}

.input-group .form-control {
  padding-left: 42px;
}

.input-icon {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  font-size: 16px;
  pointer-events: none;
}

.input-eye {
  position: absolute;
  right: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  cursor: pointer;
  font-size: 16px;
}

.login-btn {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s;
  margin-top: var(--space-md);
}

.login-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37,99,235,.35);
}

.login-footer-text {
  margin-top: var(--space-lg);
  font-size: 12px;
  color: var(--gray-400);
  text-align: center;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: var(--space-sm);
}
.breadcrumb a { color: var(--primary); cursor: pointer; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { color: var(--gray-400); }

/* ===== DROPDOWN MENU ===== */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  z-index: 300;
  overflow: hidden;
  display: none;
}
.dropdown-menu.show { display: block; }
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--gray-700);
  cursor: pointer;
  transition: background .15s;
}
.dropdown-item:hover { background: var(--gray-50); }
.dropdown-item.danger { color: var(--danger); }
.dropdown-divider { height: 1px; background: var(--gray-100); }

/* ===== NOTIFICATION PANEL ===== */
.notif-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 360px;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 300;
  display: none;
  overflow: hidden;
}
.notif-panel.show { display: block; }
.notif-panel-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  font-weight: 700;
}
.notif-item {
  display: flex;
  gap: 12px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--gray-100);
  cursor: pointer;
  transition: background .15s;
}
.notif-item:hover { background: var(--gray-50); }
.notif-item.unread { background: var(--primary-light); }
.notif-dot-unread {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 6px;
  flex-shrink: 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .login-left { display: none; }
  .login-right { width: 100%; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-grid, .form-grid-3 { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; align-items: flex-start; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .stats-grid { grid-template-columns: 1fr; }
  .page-content { padding: var(--space-md); }
  .top-header { padding: 0 var(--space-md); }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeIn .25s ease forwards; }

/* ===== SIDEBAR TOGGLE ===== */
.sidebar-toggle {
  width: 36px; height: 36px;
  display: none;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  background: #fff;
  font-size: 18px;
  color: var(--gray-700);
}
@media (max-width: 1024px) { .sidebar-toggle { display: flex; } }

/* ===== OVERLAY ===== */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 90;
}
.sidebar-overlay.show { display: block; }

/* ===== SCHOOL REPORT CARD ===== */
.rapor-card {
  background: #fff;
  border: 2px solid var(--gray-800);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.rapor-header {
  background: var(--gray-800);
  color: #fff;
  padding: var(--space-lg);
  text-align: center;
}

/* ===== ATTENDANCE GRID ===== */
.attendance-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}
.att-cell {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .1s;
}
.att-cell:hover { transform: scale(1.1); }
.att-cell.hadir { background: var(--success); color: #fff; }
.att-cell.sakit { background: var(--warning); color: #fff; }
.att-cell.izin { background: var(--info); color: #fff; }
.att-cell.alpha { background: var(--danger); color: #fff; }
.att-cell.weekend { background: var(--gray-100); color: var(--gray-400); }
.att-cell.empty { background: transparent; }