/* ========================================
   CAVCO Fleet Management - Design System
   ======================================== */

/* --- CSS Custom Properties (Light Theme) --- */
:root {
  --sidebar-width: 260px;
  --sidebar-bg: linear-gradient(180deg, #1a2332 0%, #243447 100%);
  --sidebar-text: #a8b8cc;
  --sidebar-active: #4da3ff;
  --sidebar-hover-bg: rgba(77, 163, 255, 0.12);
  --topbar-bg: #ffffff;
  --topbar-shadow: 0 1px 3px rgba(0,0,0,0.08);
  --body-bg: #f0f4f8;
  --card-bg: #ffffff;
  --card-shadow: 0 2px 8px rgba(0,0,0,0.06);
  --card-hover-shadow: 0 8px 25px rgba(0,0,0,0.1);
  --text-primary: #1a2332;
  --text-secondary: #5a6a7e;
  --border-color: #e2e8f0;
  --primary: #1E90FF;
  --primary-dark: #1a7de0;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
  --gradient-primary: linear-gradient(135deg, #1E90FF 0%, #4da3ff 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
  --gradient-danger: linear-gradient(135deg, #ef4444 0%, #f87171 100%);
  --gradient-info: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
  --gradient-purple: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
  --gradient-dark: linear-gradient(135deg, #374151 0%, #4b5563 100%);
}

/* --- Dark Theme --- */
[data-theme="dark"] {
  --topbar-bg: #1e293b;
  --topbar-shadow: 0 1px 3px rgba(0,0,0,0.3);
  --body-bg: #0f172a;
  --card-bg: #1e293b;
  --card-shadow: 0 2px 8px rgba(0,0,0,0.3);
  --card-hover-shadow: 0 8px 25px rgba(0,0,0,0.4);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --border-color: #334155;
}
[data-theme="dark"] .table { --bs-table-bg: var(--card-bg); --bs-table-color: var(--text-primary); --bs-table-striped-bg: #253347; --bs-table-hover-bg: #2d3f54; }
[data-theme="dark"] .form-control, [data-theme="dark"] .form-select { background-color: #0f172a; color: var(--text-primary); border-color: var(--border-color); }
[data-theme="dark"] .btn-outline-secondary { color: var(--text-secondary); border-color: var(--border-color); }
[data-theme="dark"] .list-group-item { background-color: var(--card-bg); color: var(--text-primary); border-color: var(--border-color); }
[data-theme="dark"] .modal-content { background-color: var(--card-bg); color: var(--text-primary); }

/* --- Base Styles --- */
* { box-sizing: border-box; }
body {
  background-color: var(--body-bg);
  color: var(--text-primary);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  margin: 0;
  overflow-x: hidden;
}
a { color: var(--primary); }
a:hover { color: var(--primary-dark); }

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--sidebar-bg);
  z-index: 1050;
  overflow-y: auto;
  transition: transform 0.3s ease;
}
.sidebar-header {
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.sidebar-header i { font-size: 1.5rem; color: #4da3ff; }
.sidebar-brand { color: #fff; font-size: 1.15rem; font-weight: 700; letter-spacing: 0.5px; }
.sidebar-nav { padding: 0.5rem 0; }
.nav-section {
  color: #5e7a97;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 1rem 1.5rem 0.4rem;
}
.nav-link-sidebar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.55rem 1.5rem;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 0.875rem;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
}
.nav-link-sidebar:hover {
  background: var(--sidebar-hover-bg);
  color: #fff;
  border-left-color: var(--sidebar-active);
}
.nav-link-sidebar.active {
  background: var(--sidebar-hover-bg);
  color: var(--sidebar-active);
  border-left-color: var(--sidebar-active);
  font-weight: 600;
}
.nav-link-sidebar i { font-size: 1.1rem; width: 1.25rem; text-align: center; }

/* --- Main Content --- */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  transition: margin-left 0.3s ease;
}
.content-wrapper { padding: 1.5rem 2rem; }

/* --- Top Bar --- */
.top-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 2rem;
  background: var(--topbar-bg);
  box-shadow: var(--topbar-shadow);
  position: sticky;
  top: 0;
  z-index: 1040;
}
.top-bar-title { flex: 1; color: var(--text-primary); font-weight: 600; }
.top-bar-actions { display: flex; align-items: center; gap: 0.5rem; }
.top-bar-actions .btn-link { color: var(--text-secondary); text-decoration: none; }
.top-bar-actions .btn-link:hover { color: var(--primary); }
.sidebar-toggle { display: none; color: var(--text-primary); text-decoration: none; }

/* --- Alert Badge --- */
.alert-badge {
  position: absolute;
  top: 0;
  right: 0;
  font-size: 0.65rem;
  padding: 0.2em 0.45em;
}

/* --- Stat Cards --- */
.stat-card {
  border: none;
  border-radius: 12px;
  color: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
  text-decoration: none;
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-hover-shadow);
  color: #fff;
}
.stat-card .card-body { padding: 1.25rem; }
.stat-card .stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.2);
  font-size: 1.4rem;
}
.stat-card .stat-value { font-size: 1.75rem; font-weight: 700; line-height: 1.2; }
.stat-card .stat-label { font-size: 0.8rem; opacity: 0.85; }

/* --- Cards --- */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  transition: box-shadow 0.2s ease;
}
.card:hover { box-shadow: var(--card-hover-shadow); }
.card-header {
  background: transparent;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  padding: 1rem 1.25rem;
}

/* --- Tables --- */
.table-wrapper { overflow-x: auto; }
.table {
  color: var(--text-primary);
  margin-bottom: 0;
}
.table thead th {
  background: var(--body-bg);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border-color);
  position: sticky;
  top: 0;
  padding: 0.75rem;
  cursor: pointer;
  user-select: none;
}
.table thead th:hover { color: var(--primary); }
.table tbody td {
  padding: 0.65rem 0.75rem;
  vertical-align: middle;
  border-color: var(--border-color);
}
.table-striped tbody tr:nth-of-type(odd) { background: rgba(0,0,0,0.015); }
[data-theme="dark"] .table-striped tbody tr:nth-of-type(odd) { background: rgba(255,255,255,0.02); }
.table-hover tbody tr:hover { background: rgba(30,144,255,0.04); }

/* --- Semaphore Badges --- */
.badge { font-weight: 600; font-size: 0.75rem; padding: 0.35em 0.65em; border-radius: 6px; }
.badge-pulse { animation: pulse 2s infinite; }
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* --- Risk Gauge --- */
.risk-gauge {
  width: 120px;
  height: 60px;
  position: relative;
  margin: 0 auto;
}
.risk-gauge-bg {
  width: 120px;
  height: 60px;
  border-radius: 60px 60px 0 0;
  background: linear-gradient(90deg, #10b981 0%, #f59e0b 50%, #ef4444 100%);
  position: relative;
  overflow: hidden;
}
.risk-gauge-mask {
  width: 90px;
  height: 45px;
  background: var(--card-bg);
  border-radius: 45px 45px 0 0;
  position: absolute;
  bottom: 0;
  left: 15px;
}
.risk-gauge-needle {
  width: 2px;
  height: 40px;
  background: var(--text-primary);
  position: absolute;
  bottom: 0;
  left: 59px;
  transform-origin: bottom center;
  transition: transform 0.8s ease;
  border-radius: 1px;
}
.risk-gauge-value {
  text-align: center;
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 0.25rem;
}

/* --- Buttons --- */
.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-gradient-primary { background: var(--gradient-primary); border: none; color: #fff; }
.btn-gradient-primary:hover { opacity: 0.9; color: #fff; }

/* --- Forms --- */
.form-control, .form-select {
  border-radius: 8px;
  border-color: var(--border-color);
  padding: 0.5rem 0.75rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem rgba(30,144,255,0.15);
}

/* --- Search Filter --- */
.table-search { max-width: 300px; margin-bottom: 1rem; }

/* --- Responsive --- */
@media (max-width: 991.98px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.show { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .sidebar-toggle { display: block; }
  .content-wrapper { padding: 1rem; }
}

/* --- Toast --- */
.toast-slide-in { animation: slideIn 0.3s ease; }
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* --- Quick Actions --- */
.quick-action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-secondary);
  background: var(--body-bg);
  transition: all 0.2s ease;
  font-size: 0.85rem;
}
.quick-action-btn:hover {
  background: rgba(30,144,255,0.08);
  color: var(--primary);
  transform: translateY(-2px);
}
.quick-action-btn i { font-size: 1.5rem; }

/* --- Prediction Cards --- */
.prediction-card { border-radius: 12px; overflow: hidden; }
.prediction-card .risk-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.5px; }

/* --- Alert Cards --- */
.alert-card {
  border-left: 4px solid;
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  background: var(--card-bg);
}
.alert-card.severity-critical { border-left-color: var(--danger); }
.alert-card.severity-warning { border-left-color: var(--warning); }
.alert-card.severity-info { border-left-color: var(--info); }

/* --- Nav Tabs --- */
.nav-tabs .nav-link { color: var(--text-secondary); border: none; padding: 0.75rem 1.25rem; }
.nav-tabs .nav-link.active { color: var(--primary); border-bottom: 2px solid var(--primary); background: transparent; }
.nav-tabs .nav-link:hover { color: var(--primary); }

/* --- Activity Log --- */
.activity-action { font-weight: 600; }
.activity-action.action-create { color: var(--success); }
.activity-action.action-update { color: var(--primary); }
.activity-action.action-delete { color: var(--danger); }

/* --- Login Page (no sidebar) --- */
.login-page .sidebar, .login-page .top-bar { display: none; }
.login-page .main-content { margin-left: 0; }
.login-page .content-wrapper { max-width: 450px; margin: 5rem auto; }

/* Collapsible Sections */
.collapsible-header { cursor: pointer; user-select: none; display: flex; justify-content: space-between; align-items: center; }
.collapsible-header:hover { opacity: 0.8; }
.collapsible-header .collapse-icon { transition: transform 0.3s ease; }
.collapsible-header.collapsed .collapse-icon { transform: rotate(-90deg); }
.collapsible-body { transition: max-height 0.3s ease, opacity 0.3s ease; overflow: hidden; }
.collapsible-body.collapsed { max-height: 0 !important; opacity: 0; padding-top: 0 !important; padding-bottom: 0 !important; }
/* Photo gallery */
.photo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 1rem; }
.photo-card { border-radius: 8px; overflow: hidden; position: relative; }
.photo-card img { width: 100%; height: 150px; object-fit: cover; }
.photo-card .photo-overlay { position: absolute; bottom: 0; left: 0; right: 0; background: rgba(0,0,0,0.6); color: #fff; padding: 0.5rem; font-size: 0.75rem; opacity: 0; transition: opacity 0.2s; }
.photo-card:hover .photo-overlay { opacity: 1; }
/* Profile photo */
.profile-photo { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; border: 3px solid var(--primary); }
.profile-photo-lg { width: 120px; height: 120px; }

/* Sidebar Collapse Toggle Button — fixed tab on sidebar edge */
.sidebar-collapse-toggle {
  position: fixed;
  top: 50%;
  left: 260px;
  margin-left: -1px;
  transform: translateY(-50%);
  z-index: 1060;
  width: 20px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.15);
  border-left: none;
  border-radius: 0 6px 6px 0;
  background: #243447;
  color: #a8b8cc;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: left 0.3s ease, background 0.2s ease;
  padding: 0;
  font-size: 0.7rem;
}
.sidebar-collapse-toggle:hover {
  background: var(--primary);
  color: #fff;
}
.sidebar-collapse-toggle i {
  transition: transform 0.3s ease;
}

/* Sidebar Resize Handle — draggable bar on right edge */
.sidebar-resize-handle {
  position: fixed;
  top: 0;
  left: 258px;
  width: 4px;
  height: 100vh;
  cursor: col-resize;
  z-index: 1055;
  background: transparent;
  transition: background 0.2s, left 0.3s ease;
}
.sidebar-resize-handle:hover,
.sidebar-resize-handle.resizing {
  background: var(--primary);
}

/* Collapsed Sidebar */
.sidebar.sidebar-collapsed { width: 64px; }
.sidebar.sidebar-collapsed .sidebar-brand { display: none; }
.sidebar.sidebar-collapsed .nav-text { display: none; }
.sidebar.sidebar-collapsed .nav-section {
  height: 1px;
  padding: 0;
  margin: 0.4rem 0.75rem;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
}
.sidebar.sidebar-collapsed .nav-link-sidebar {
  padding: 0.7rem 0;
  justify-content: center;
  border-left: none;
  gap: 0;
  position: relative;
}
.sidebar.sidebar-collapsed .nav-link-sidebar i {
  font-size: 1.15rem;
  margin: 0;
  width: auto;
}
/* Tooltip on hover when collapsed */
.sidebar.sidebar-collapsed .nav-link-sidebar:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  margin-left: 8px;
  background: #1a2332;
  color: #fff;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  white-space: nowrap;
  z-index: 1070;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.sidebar.sidebar-collapsed .sidebar-header { justify-content: center; padding: 1rem 0.5rem; }

@media (max-width: 991.98px) {
  .sidebar-collapse-toggle,
  .sidebar-resize-handle { display: none; }
}

/* Pagination */
.pagination .page-link { color: var(--primary); border-color: var(--border-color); background: var(--card-bg); }
.pagination .page-item.active .page-link { background: var(--primary); border-color: var(--primary); color: #fff; }
.pagination .page-item.disabled .page-link { color: var(--text-secondary); background: var(--body-bg); }
[data-theme="dark"] .pagination .page-link { background: var(--card-bg); color: var(--text-primary); }

/* Form validation */
.was-validated .form-control:invalid { border-color: var(--danger); }
.was-validated .form-control:valid { border-color: var(--success); }
.form-control.is-invalid ~ .invalid-feedback { display: block; color: var(--danger); font-size: 0.8rem; }

/* Loading button */
button:disabled { opacity: 0.7; cursor: not-allowed; }

/* Error page */
.error-page { min-height: 60vh; display: flex; align-items: center; justify-content: center; }