/* ============================================================================
   VEHICLE REQUEST SYSTEM - OPTIMIZED STYLESHEET
   Bootstrap 5 + Custom Styles
   ============================================================================ */

/* ============================================================================
   CSS VARIABLES - Single Source of Truth
   ============================================================================ */
:root {
  /* Primary Colors */
  --primary-color: #1b3c53;
  --primary-rgb: 27, 60, 83;
  --secondary-color: #799eff;
  --secondary-rgb: 121, 158, 255;
  --accent-color: #ffbc4c;
  
  /* Semantic Colors */
  --success-color: #22c55e;
  --success-rgb: 34, 197, 94;
  --success-dark: #166534;
  --warning-color: #f59e0b;
  --warning-rgb: 245, 158, 11;
  --warning-dark: #92400e;
  --danger-color: #ef4444;
  --danger-rgb: 239, 68, 68;
  --danger-dark: #991b1b;
  --info-color: #3b82f6;
  --info-rgb: 59, 130, 246;
  
  /* Backgrounds */
  --bg-primary: #f8fafc;
  --bg-card: #ffffff;
  
  /* Text Colors */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  
  /* Borders & Effects */
  --border-color: #e2e8f0;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.15);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, #2563eb 100%);
  --gradient-login: linear-gradient(135deg, var(--primary-color) 0%, #2563eb 50%, #667eea 100%);
}

/* ============================================================================
   BASE STYLES
   ============================================================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", sans-serif;
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

.text-secondary {
    color: var(--text-secondary) !important;
  }

/* ============================================================================
   HEADER
   ============================================================================ */
.modern-header {
  background: var(--gradient-primary);
  color: white;
  padding: 2rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}

.modern-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-icon {
  font-size: 2rem;
  background: rgba(255, 255, 255, 0.2);
  padding: 0.5rem;
  border-radius: 12px;
}

.user-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

.welcome-text {
  font-size: 1.1rem;
  opacity: 0.9;
  flex: 1;
}

.user-actions {
  display: flex;
  gap: 0.5rem;
}

/* ============================================================================
   STATS DASHBOARD
   ============================================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1;
}

.stat-card {
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.stat-icon {
  font-size: 2rem;
  padding: 0.75rem;
  border-radius: 12px;
}

.stat-icon.text-success { background: rgba(var(--success-rgb), 0.1); color: var(--success-color); }
.stat-icon.text-warning { background: rgba(var(--warning-rgb), 0.1); color: var(--warning-color); }
.stat-icon.text-danger { background: rgba(var(--danger-rgb), 0.1); color: var(--danger-color); }
.stat-icon.text-info { background: rgba(var(--info-rgb), 0.1); color: var(--info-color); }

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================================================
   NAVIGATION TABS
   ============================================================================ */
.nav-container {
  background: var(--bg-card);
  padding: 1rem;
  border-radius: 16px;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.nav-tabs {
  border: none;
}

.nav-tabs .nav-link {
  border: none;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  margin-right: 0.5rem;
  transition: all 0.2s ease;
}

.nav-tabs .nav-link.active {
  background: var(--primary-color);
  color: white;
}

.nav-tabs .nav-link:hover:not(.active) {
  background: #f1f5f9;
  color: var(--primary-color);
}

/* ============================================================================
   DASHBOARD LAYOUT
   ============================================================================ */
.dashboard-grid {
  margin-top: 1rem;
}

.upcoming-sidebar {
  position: sticky;
  top: 6rem;
}

.upcoming-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.upcoming-header {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.upcoming-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.upcoming-item {
  display: flex;
  gap: 1rem;
  padding: 0.75rem;
  border-radius: 12px;
  border: 1px dashed var(--border-color);
  background: #f8fafc;
  align-items: center;
}

.upcoming-date {
  min-width: 64px;
  border-radius: 12px;
  background: white;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
  text-align: center;
}

.upcoming-date .month {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.upcoming-date .day {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1.1;
}

.upcoming-details {
  flex: 1;
}

.vehicle-label {
  font-weight: 700;
  color: var(--primary-color);
}

.upcoming-range {
  font-weight: 600;
}

.upcoming-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ============================================================================
   CALENDAR
   ============================================================================ */
.calendar-container .fc {
  font-family: "Inter", sans-serif;
}

.calendar-container .fc .fc-toolbar-title {
  font-size: 1.35rem;
  color: var(--primary-color);
}

.calendar-container .fc .fc-button {
  background: var(--primary-color);
  border: none;
  border-radius: 8px;
  font-weight: 600;
}

.calendar-container .fc .fc-button:disabled {
  opacity: 0.6;
}

/* FullCalendar event cursor */
.calendar-container .fc-event {
  cursor: pointer;
  transition: all 0.2s ease;
}

.calendar-container .fc-event:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0.9;
}

.calendar-container .calendar-event {
  border: none;
  border-radius: 12px;
  padding: 0.35rem 0.55rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
}

.calendar-container .calendar-event--active {
  background: rgba(var(--success-rgb), 0.2);
  color: var(--success-dark);
  border-left: 4px solid var(--success-color);
}

.calendar-container .calendar-event--upcoming {
  background: rgba(99, 102, 241, 0.18);
  color: #1e3a8a;
  border-left: 4px solid var(--secondary-color);
}

.calendar-container .calendar-event--past {
  background: rgba(148, 163, 184, 0.25);
  color: #475569;
  border-left: 4px solid #94a3b8;
}

.calendar-legend {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.legend-active { background: var(--success-color); }
.legend-upcoming { background: var(--secondary-color); }
.legend-complete { background: #94a3b8; }

/* ============================================================================
   AUDIT TIMELINE
   ============================================================================ */
.audit-timeline {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.audit-entry {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  background: #f8fafc;
}

.audit-entry__title {
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.35rem;
}

.audit-entry__meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.audit-entry__notes {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-primary);
}

/* ============================================================================
   VEHICLES GRID
   ============================================================================ */
.vehicles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.vehicle-card {
  background: var(--bg-card);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.vehicle-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--success-color);
  transition: all 0.3s ease;
}

.vehicle-card.status-assigned::before { background: var(--danger-color); }
.vehicle-card.status-returning::before { background: var(--warning-color); }
.vehicle-card.status-maintenance::before { background: var(--text-secondary); }

.vehicle-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.vehicle-icon {
  font-size: 3rem;
  text-align: center;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.vehicle-plate {
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.vehicle-details {
  min-height: 80px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.detail-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid #f1f5f9;
}

.detail-label {
  font-weight: 500;
  color: var(--text-secondary);
}

.detail-value {
  font-weight: 600;
  color: var(--text-secondary);
}

/* ============================================================================
   STATUS BADGES
   ============================================================================ */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 25px;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.status-available {
  background: rgba(var(--success-rgb), 0.1);
  color: var(--success-dark);
  border: 2px solid rgba(var(--success-rgb), 0.2);
}

.status-assigned {
  background: rgba(var(--danger-rgb), 0.1);
  color: var(--danger-dark);
  border: 2px solid rgba(var(--danger-rgb), 0.2);
}

.status-returning {
  background: rgba(var(--warning-rgb), 0.1);
  color: var(--warning-dark);
  border: 2px solid rgba(var(--warning-rgb), 0.2);
}

.status-maintenance {
  background: rgba(63, 61, 58, 0.1);
  color: #393431;
  border: 2px solid rgba(200, 194, 183, 0.2);
}

.status-passenger {
  background: rgba(168, 85, 247, 0.1);
  color: #6b21a8;
  border: 2px solid rgba(168, 85, 247, 0.2);
}

/* ============================================================================
   BUTTONS
   ============================================================================ */
.btn-modern {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 500;
  border: none;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: white;
}

.btn-modern:hover {
  color: white;
}

.btn-primary-modern {
  background: var(--primary-color);
  color: white;
}

.btn-primary-modern:hover {
  background: #0f2937;
  color: white;
}

.btn-success-modern {
  background: var(--success-color);
  color: white;
}

.btn-warning-modern {
  background: var(--warning-color);
  color: white;
}

.btn-danger-modern {
  background: var(--danger-color);
  color: white;
}

.action-group {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

/* ============================================================================
   TABLES
   ============================================================================ */
.table-container {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.table {
  border-collapse: separate;
  border-spacing: 0;
}

.table th {
  background: #f8fafc;
  border: none;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 1rem;
}

.table td {
  border: none;
  padding: 1rem;
  border-bottom: 1px solid #f1f5f9;
}

.table tbody tr:hover {
  background: #f8fafc;
}

/* ============================================================================
   ALERTS
   ============================================================================ */
.modern-alert {
  display: flex;
  padding: 0 1.5rem;
}

.alert {
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-icon {
  font-size: 1.2rem;
}

.alert-permanent {
  /* For persistent alerts that don't auto-dismiss */
}

.alert-success {
  background: rgba(var(--success-rgb), 0.1);
  color: var(--success-dark);
  border-left: 4px solid var(--success-color);
}

.alert-danger {
  background: rgba(var(--danger-rgb), 0.1);
  color: var(--danger-dark);
  border-left: 4px solid var(--danger-color);
}

.alert-warning {
  background: rgba(var(--warning-rgb), 0.1);
  color: var(--warning-dark);
  border-left: 4px solid var(--warning-color);
}

.alert-info {
  background: rgba(var(--info-rgb), 0.1);
  color: #1e40af;
  border-left: 4px solid var(--info-color);
}

/* ============================================================================
   LOGIN PAGE
   ============================================================================ */
body.login-page {
  background: var(--gradient-login);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow-x: hidden;
}

.login-bg-decoration {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 1;
}

.floating-shape {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  animation: floatUpDown 6s ease-in-out infinite;
}

.floating-shape:nth-child(1) { width: 80px; height: 80px; top: 20%; left: 15%; animation-delay: 0s; }
.floating-shape:nth-child(2) { width: 120px; height: 120px; top: 60%; right: 20%; animation-delay: 2s; }
.floating-shape:nth-child(3) { width: 60px; height: 60px; bottom: 30%; left: 20%; animation-delay: 4s; }
.floating-shape:nth-child(4) { width: 100px; height: 100px; top: 15%; right: 30%; animation-delay: 1s; }

@keyframes floatUpDown {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
}

@keyframes fadeInSubtle {
  from {
    opacity: 0.95;
    transform: translateY(2px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-wrapper {
  width: 100%;
  max-width: 450px;
  padding: 20px;
  position: relative;
  z-index: 10;
}

.login-container {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: 24px;
  padding: 3rem;
  box-shadow: 0 25px 50px rgba(27, 60, 83, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.login-container:hover {
  transform: translateY(-5px);
  box-shadow: 0 30px 60px rgba(27, 60, 83, 0.2);
}

.login-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--gradient-login);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
  box-shadow: 0 10px 25px rgba(27, 60, 83, 0.3);
}

.login-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 0;
}

.form-floating {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-floating input {
  border: 2px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem 1rem 0.5rem 3rem;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: var(--bg-card);
}

.form-floating input:focus {
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 0.2rem rgba(121, 158, 255, 0.25);
  background: white;
}

.form-floating label {
  position: absolute;
  top: 50%;
  left: 3rem;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-weight: 500;
  pointer-events: none;
  transition: 0.2s ease all;
}

.form-floating input:focus ~ label,
.form-floating input:not(:placeholder-shown) ~ label {
  top: 0.8rem;
  left: 3rem;
  font-size: 0.8rem;
  color: var(--secondary-color);
}

.input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 1.1rem;
  z-index: 5;
  transition: color 0.3s ease;
}

.login-btn {
  width: 100%;
  padding: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  border: none;
  border-radius: 12px;
  background: var(--gradient-login);
  color: white;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(27, 60, 83, 0.3);
}

.login-btn:active {
  transform: translateY(0);
}

.login-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.login-btn:hover::before {
  left: 100%;
}

.back-link {
  text-align: center;
  margin-top: 1.5rem;
}

.back-link a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.3s ease;
}

.back-link a:hover {
  color: var(--primary-color);
}

.login-alert {
  border: none;
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1.5rem;
  background: rgba(239, 68, 68, 0.1);
  color: #991b1b;
  border-left: 4px solid var(--danger-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ============================================================================
   SIMPLE FORM PAGE STYLES
   ============================================================================ */
.simple-form-page-container {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 2rem 2.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  max-width: 500px;
  width: 100%;
}

.simple-form-page-container .form-label {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.simple-form-page-container .form-control,
.simple-form-page-container .form-select {
  border-radius: 8px;
  border: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  font-size: 1rem;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

.simple-form-page-container .form-control:focus,
.simple-form-page-container .form-select:focus {
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 0.2rem rgba(121, 158, 255, 0.25);
  background-color: var(--bg-card);
}

.simple-form-page-container .input-group-icon {
  position: relative;
}

.simple-form-page-container .input-group-icon .form-control {
  padding-left: 2.75rem;
}

.simple-form-page-container .input-group-icon .input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(50%);
  color: var(--text-secondary);
  font-size: 1rem;
  z-index: 5;
}

/* ============================================================================
   PHP ERROR DISPLAY
   ============================================================================ */
.php-error {
  font-family: "Inter", monospace;
  padding: 1rem 1.25rem;
  border-radius: 8px;
  margin: 1rem;
  white-space: pre-wrap;
  box-shadow: var(--shadow);
  border-left: 4px solid;
  position: relative;
}

.php-error strong {
  display: block;
  margin-bottom: 0.25rem;
}

.php-error-close {
  position: absolute;
  top: 8px;
  right: 10px;
  background: none;
  border: none;
  color: inherit;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.php-error-close:hover {
  opacity: 1;
}

.php-error.fatal {
  background: rgba(var(--danger-rgb), 0.1);
  border-color: var(--danger-color);
  color: var(--danger-dark);
}

.php-error.warning {
  background: rgba(var(--warning-rgb), 0.1);
  border-color: var(--warning-color);
  color: var(--warning-dark);
}

.php-error.notice {
  background: rgba(var(--info-rgb), 0.1);
  border-color: var(--info-color);
  color: #1e40af;
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */
@media (max-width: 991px) {
  .upcoming-sidebar {
    position: static;
  }
}
/* Add these at the end of the cleaned file: */

@media (max-width: 768px) {
  .login-container { padding: 2rem; margin: 1rem; }
  .login-title { font-size: 1.75rem; }
  .floating-shape { display: none; }
  .user-section { flex-direction: column; text-align: center; }
  .stats-grid { grid-template-columns: 1fr; }
  .vehicles-grid { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; gap: 1rem; align-items: stretch; }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .floating-shape, .login-btn::before { animation: none; }
  .login-container:hover, .vehicle-card:hover, .stat-card:hover { transform: none; }
}

.login-btn:focus-visible,
.form-floating input:focus-visible,
.btn-modern:focus-visible {
  outline: 2px solid var(--secondary-color);
  outline-offset: 2px;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0f172a;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
  }
  .login-container { background: rgba(30, 41, 59, 0.95); }
  .form-floating input { background: var(--bg-card); color: var(--text-primary); }
  .login-title { color: var(--text-primary); }
  .simple-form-page-container { color: var(--text-primary); }
  .php-error.fatal { background: rgba(var(--danger-rgb), 0.2); }
  .php-error.warning { background: rgba(var(--warning-rgb), 0.2); }
}