/* ============================================
   EduPortal Design System
   ============================================ */

:root {
  --color-bg: #F7F4ED;
  --color-surface: #FFFFFF;
  --color-primary: #1B2A4A;
  --color-primary-light: #2A3D63;
  --color-accent: #C8553D;
  --color-accent-light: #E8DDD3;
  --color-success: #2E7D5B;
  --color-success-bg: #E3EFE8;
  --color-danger: #B33A3A;
  --color-danger-bg: #F5E4E1;
  --color-muted: #8A8578;
  --color-border: #E5E0D6;
  --color-text: #2B2A28;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-card: 0 1px 3px rgba(27, 42, 74, 0.06), 0 1px 2px rgba(27, 42, 74, 0.04);
  --shadow-lifted: 0 8px 24px rgba(27, 42, 74, 0.10);
}

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

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

/* ============================================
   Layout: App Shell
   ============================================ */

.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 250px;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
}

.sidebar-brand {
  padding: 28px 24px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-brand .mark {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.sidebar-brand .name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.2;
}

.sidebar-brand .role-tag {
  font-size: 12px;
  color: rgba(255,255,255,0.55);
  margin-top: 4px;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

.sidebar-nav a:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
}

.sidebar-nav a.active {
  background: var(--color-accent);
  color: #fff;
}

.sidebar-nav .icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 16px 12px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.sidebar-footer .user-row {
  padding: 10px 14px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 8px;
}

.sidebar-footer .user-row strong {
  display: block;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  transition: background 0.15s ease;
}

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

.main {
  margin-left: 250px;
  flex: 1;
  min-width: 0;
}

.topbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 20px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar h1 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--color-primary);
}

.topbar .subtitle {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 2px;
}

.topbar .date-chip {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
}

.content {
  padding: 32px 36px 60px;
}

/* ============================================
   Cards & Stats
   ============================================ */

.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  box-shadow: var(--shadow-card);
}

.stat-card .stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 10px;
}

.stat-card .stat-value {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  color: var(--color-primary);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  margin-bottom: 24px;
}

.card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.card-header h2 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
}

.card-header .card-meta {
  font-size: 13px;
  color: var(--color-muted);
}

.card-body {
  padding: 24px;
}

/* ============================================
   Tables (Register style)
   ============================================ */

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  padding: 0 24px 12px;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

tbody td {
  padding: 14px 24px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--color-bg);
}

.cell-mono {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-muted);
}

.cell-name {
  font-weight: 600;
  color: var(--color-text);
}

/* ============================================
   Status chips
   ============================================ */

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
}

.chip-present {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.chip-absent {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.chip-leave {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.chip-neutral {
  background: var(--color-bg);
  color: var(--color-muted);
  border: 1px solid var(--color-border);
}

/* ============================================
   Forms
   ============================================ */

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
}

.field .hint {
  font-size: 12px;
  color: var(--color-muted);
}

input, select, textarea {
  font-family: var(--font-body);
  font-size: 14px;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--color-primary);
  background: var(--color-surface);
}

input.mono, .input-mono {
  font-family: var(--font-mono);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-light);
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}

.btn-accent:hover {
  background: #b14a35;
}

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-danger {
  background: transparent;
  border-color: var(--color-danger-bg);
  color: var(--color-danger);
}

.btn-danger:hover {
  background: var(--color-danger-bg);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.actions-row {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

/* ============================================
   Login Page
   ============================================ */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  background-image:
    radial-gradient(circle at 15% 20%, rgba(200,85,61,0.18) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(255,255,255,0.05) 0%, transparent 40%);
  padding: 24px;
}

.login-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lifted);
  width: 100%;
  max-width: 920px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
}

.login-visual {
  background: var(--color-primary);
  color: #fff;
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.login-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 10%, rgba(200,85,61,0.25) 0%, transparent 45%);
}

.login-visual .mark {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  position: relative;
  z-index: 1;
}

.login-visual h1 {
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 600;
  line-height: 1.2;
  margin-top: 14px;
  position: relative;
  z-index: 1;
}

.login-visual p {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  margin-top: 14px;
  max-width: 320px;
  position: relative;
  z-index: 1;
}

.login-visual .ledger {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255,255,255,0.45);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.login-visual .ledger .row {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed rgba(255,255,255,0.12);
  padding-bottom: 6px;
}

.login-form-side {
  padding: 48px 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-form-side .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.login-form-side h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.login-form-side form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-form-side .btn {
  margin-top: 8px;
  padding: 12px 20px;
}

.role-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 28px;
}

.role-switch a {
  flex: 1;
  text-align: center;
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-muted);
  transition: all 0.15s ease;
}

.role-switch a.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 16px;
}

.alert-error {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.alert-success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

/* ============================================
   Empty states
   ============================================ */

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--color-muted);
}

.empty-state .icon {
  font-size: 32px;
  margin-bottom: 12px;
  opacity: 0.5;
}

.empty-state h3 {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.empty-state p {
  font-size: 13px;
}

/* ============================================
   Badges / pills used inline
   ============================================ */

.pill {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 3px 10px;
  color: var(--color-muted);
}

.text-muted { color: var(--color-muted); }
.text-accent { color: var(--color-accent); }
.text-success { color: var(--color-success); }

/* ============================================
   Modal (simple, CSS-driven)
   ============================================ */

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(27, 42, 74, 0.45);
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lifted);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--color-primary);
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--color-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  padding: 24px;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 900px) {
  .login-card {
    grid-template-columns: 1fr;
  }
  .login-visual {
    display: none;
  }
}

@media (max-width: 860px) {
  .sidebar {
    width: 70px;
  }
  .sidebar-brand .name,
  .sidebar-brand .role-tag,
  .sidebar-nav a span,
  .sidebar-footer .user-row,
  .logout-btn span {
    display: none;
  }
  .sidebar-nav a, .logout-btn {
    justify-content: center;
  }
  .main {
    margin-left: 70px;
  }
  .topbar {
    padding: 16px 20px;
  }
  .content {
    padding: 20px;
  }
}

@media (max-width: 600px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .card-header {
    flex-direction: column;
    align-items: flex-start;
  }
}