/* ============================================================
   AttendX — Reusable Components (light/dark + mobile)
   ============================================================ */

/* ── Theme toggle ── */
.theme-toggle {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  flex-shrink: 0;
}
.theme-toggle:hover { background: var(--hover-bg); color: var(--text); }

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.btn-primary:hover { opacity: 0.9; }
.btn-primary:active { transform: scale(0.98); }
.btn-primary.full { width: 100%; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.btn-secondary:hover { border-color: var(--border-hover); background: var(--hover-bg); }

.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  background: rgba(224,92,92,0.12);
  color: var(--danger);
  border: 1px solid rgba(224,92,92,0.25);
  border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-danger:hover { background: rgba(224,92,92,0.2); }

/* ── Form Fields ── */
.field { margin-bottom: 16px; }

.field label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 7px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.input-wrap { position: relative; }

.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
  display: flex;
  align-items: center;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 14px 11px 42px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}

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

.field input::placeholder,
.field textarea::placeholder { color: var(--muted); }
.field select { appearance: none; cursor: pointer; }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* ── Cards ── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
}

.stat-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.stat-card .stat-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.stat-card .stat-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--text);
  line-height: 1;
}

.stat-card .stat-sub {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

/* ── Badges ── */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 500;
}
.badge-success { background: rgba(62,207,142,0.12);  color: var(--success); }
.badge-danger  { background: rgba(224,92,92,0.12);   color: var(--danger); }
.badge-warning { background: rgba(245,166,35,0.12);  color: var(--warning); }
.badge-info    { background: rgba(79,142,247,0.12);  color: var(--accent); }
.badge-muted   { background: var(--surface2);        color: var(--muted); }

/* ── Alert ── */
.alert {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 16px;
}
.alert.show { display: flex; }
.alert.error   { background: rgba(224,92,92,0.1);  border: 1px solid rgba(224,92,92,0.25);  color: #e05c5c; }
.alert.success { background: rgba(62,207,142,0.1); border: 1px solid rgba(62,207,142,0.25); color: var(--success); }
.alert.warning { background: rgba(245,166,35,0.1); border: 1px solid rgba(245,166,35,0.25); color: var(--warning); }

/* ── Table ── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 480px;
}

thead th {
  text-align: left;
  padding: 10px 16px;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  white-space: nowrap;
}

tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--hover-bg); }

/* ── Modal ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 100%;
  max-width: 460px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.modal-header h3 { font-size: 18px; }

.modal-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  display: flex;
  align-items: center;
}
.modal-close:hover { color: var(--text); background: var(--hover-bg); }

/* ── Divider ── */
.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  color: var(--muted);
  font-size: 12px;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── App layout ── */
.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  transition: transform 0.3s ease, background 0.2s;
  z-index: 50;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px;
  margin-bottom: 32px;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-name {
  font-family: 'DM Serif Display', serif;
  font-size: 18px;
  color: var(--text);
}

.nav-section { margin-bottom: 24px; }

.nav-section-label {
  font-size: 10px;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0 8px;
  margin-bottom: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  text-decoration: none;
}
.nav-item:hover { background: var(--hover-bg); color: var(--text); text-decoration: none; }
.nav-item.active { background: var(--accent-dim); color: var(--accent); }
[data-theme="light"] .nav-item.active { color: #1a5fd4; }

.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 8px;
}

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  flex-shrink: 0;
}
[data-theme="light"] .avatar { color: #1a5fd4; }

.user-info .user-name { font-size: 13px; font-weight: 500; color: var(--text); }
.user-info .user-role { font-size: 11px; color: var(--muted); text-transform: capitalize; }

/* ── Main content ── */
.main-content {
  padding: 36px 40px;
  overflow-y: auto;
  background: var(--bg);
  min-width: 0;
  transition: background 0.2s;
}

.page-header { margin-bottom: 32px; }
.page-header h1 { font-size: 26px; margin-bottom: 4px; }
.page-header p  { font-size: 14px; color: var(--muted); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

/* ── Mobile topbar ── */
.mobile-topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--sidebar-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 60;
  transition: background 0.2s;
}

.mobile-topbar-left { display: flex; align-items: center; gap: 10px; }
.mobile-topbar .brand-name { font-family: 'DM Serif Display', serif; font-size: 18px; color: var(--text); }
.mobile-topbar-right { display: flex; align-items: center; gap: 8px; }

.hamburger {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile sidebar overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 40;
}
.sidebar-overlay.open { display: block; }

/* ── Page tabs ── */
.page-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-tab {
  padding: 10px 16px;
  background: none;
  border: none;
  color: var(--muted);
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.15s;
  white-space: nowrap;
}
.page-tab:hover { color: var(--text); }
.page-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── Section card ── */
.section-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
}

.section-card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.section-card-header h3 {
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.section-card-header p { font-size: 13px; color: var(--muted); margin-top: 2px; }

/* ── Toolbar ── */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.toolbar-left { display: flex; align-items: center; gap: 10px; flex: 1; }

.search-wrap {
  position: relative;
  flex: 1;
  max-width: 320px;
}

.search-wrap svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

.search-wrap input {
  width: 100%;
  padding: 9px 14px 9px 38px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}
.search-wrap input:focus { border-color: var(--accent); }
.search-wrap input::placeholder { color: var(--muted); }

/* ── Action icon buttons ── */
.icon-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}
.icon-btn:hover { background: var(--hover-bg); color: var(--text); border-color: var(--border-hover); }
.icon-btn.danger:hover  { background: rgba(224,92,92,0.1);  color: var(--danger);  border-color: rgba(224,92,92,0.3); }
.icon-btn.success:hover { background: rgba(62,207,142,0.1); color: var(--success); border-color: rgba(62,207,142,0.3); }

.action-group { display: flex; align-items: center; gap: 6px; }

/* ── Approval chips ── */
.chip-pending {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 500;
  background: rgba(245,166,35,0.12);
  color: var(--warning);
}

.chip-approved {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 500;
  background: rgba(62,207,142,0.12);
  color: var(--success);
}

/* ── Course card grid ── */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.course-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s;
}
.course-card:hover { border-color: var(--border-hover); }

.course-code {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.course-name { font-size: 15px; font-weight: 500; color: var(--text); }

.course-meta {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* ── Nav badge ── */
.nav-badge {
  margin-left: auto;
  background: var(--warning);
  color: #000;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 99px;
}

/* ── Empty state ── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--muted);
}
.empty-state p { font-size: 14px; margin-top: 8px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .app-layout { grid-template-columns: 1fr; }

  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    transform: translateX(-100%);
    width: 260px;
    box-shadow: 4px 0 24px rgba(0,0,0,0.25);
  }

  .sidebar.open { transform: translateX(0); }
  .mobile-topbar { display: flex; }

  .main-content { padding: 20px 16px; }
  .page-header h1 { font-size: 22px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .field-row { grid-template-columns: 1fr; }
  .modal { padding: 20px 16px; }
  .course-grid { grid-template-columns: 1fr; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .search-wrap { max-width: 100%; }
}

@media (max-width: 380px) {
  .stats-grid { grid-template-columns: 1fr; }
}