/* ============================================
   MODERN DASHBOARD CSS - Vases d'Honneur
   Expert UI/UX Design
   ============================================ */

/* ============================================
   CSS VARIABLES & DESIGN TOKENS
   ============================================ */
:root {
  /* Colors - Primary Palette */
  --primary: #4F46E5;
  --primary-dark: #4338CA;
  --secondary: #06B6D4;
  --accent: #F59E0B;
  
  /* Grays - Professional Scale */
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  
  /* Semantic Colors */
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --info: #3B82F6;
  --gold: #F59E0B;
  
  /* Gradients */
  --gradient-blue: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-green: linear-gradient(135deg, #10B981 0%, #059669 100%);
  --gradient-orange: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  --gradient-red: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
  --gradient-purple: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
  --gradient-teal: linear-gradient(135deg, #006C66 0%, #004D47 100%);
  
  /* Spacing System (8px base) */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;    /* 8px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  --spacing-3xl: 4rem;     /* 64px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;    /* 4px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-2xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;
  
  /* Shadows - Depth System */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 280px;
  background: linear-gradient(180deg, #1E293B 0%, #0F172A 100%);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  z-index: 1000;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo-container {
  width: 48px;
  height: 48px;
  background: var(--gradient-teal);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  box-shadow: 0 8px 16px rgba(0, 108, 102, 0.3);
}

.brand-text h1 {
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  margin: 0;
}

.brand-text p {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
  margin: 0;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xl);
}

.avatar {
  width: 44px;
  height: 44px;
  background: var(--gradient-purple);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.user-info h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: white;
  margin: 0 0 0.125rem 0;
}

.user-info .badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  background: rgba(16, 185, 129, 0.2);
  color: var(--success);
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-menu {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  font-weight: 500;
  font-size: 0.9rem;
}

.nav-item i {
  width: 20px;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.nav-item:hover:not([aria-disabled="true"]) {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transform: translateX(4px);
}

.nav-item.active {
  background: var(--gradient-teal);
  color: white;
  box-shadow: 0 4px 12px rgba(0, 108, 102, 0.4);
}

.nav-item[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}

.sidebar-footer {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-logout {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #FCA5A5;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
  font-size: 0.9rem;
}

.btn-logout:hover {
  background: rgba(239, 68, 68, 0.2);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   MAIN WRAPPER
   ============================================ */
.main-wrapper {
  margin-left: 280px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ============================================
   TOP HEADER
   ============================================ */
.top-header {
  background: var(--white);
  padding: var(--spacing-xl) var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-xl);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0 0 0.25rem 0;
}

.header-left .subtitle {
  color: var(--gray-500);
  font-size: 0.95rem;
  margin: 0;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.search-box {
  position: relative;
  width: 300px;
}

.search-box i {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
}

.search-box input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 2.5rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: 0.9rem;
  transition: var(--transition);
  background: var(--gray-50);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.icon-btn {
  position: relative;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-50);
  border: none;
  border-radius: var(--radius-lg);
  color: var(--gray-600);
  cursor: pointer;
  transition: var(--transition);
}

.icon-btn:hover {
  background: var(--gray-100);
  color: var(--gray-900);
  transform: translateY(-2px);
}

.badge-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  background: var(--danger);
  border-radius: var(--radius-full);
  border: 2px solid white;
}

/* ============================================
   DASHBOARD CONTENT
   ============================================ */
.dashboard-content {
  flex: 1;
  padding: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.welcome-panel{
  background: linear-gradient(120deg, rgba(79,70,229,.08), rgba(0,108,102,.08));
  border-radius: var(--radius-2xl);
  padding: var(--spacing-xl);
  display:flex;
  justify-content:space-between;
  gap:var(--spacing-lg);
  align-items:center;
  box-shadow:var(--shadow-lg);
}
.welcome-panel h3{
  font-size:1.5rem;
  margin-bottom:0.35rem;
  color:var(--gray-900);
}
.welcome-panel p{
  color:var(--gray-600);
  max-width:520px;
}
.welcome-actions{
  display:flex;
  flex-wrap:wrap;
  gap:var(--spacing-sm);
  justify-content:flex-end;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:0.4rem;
  border:none;
  border-radius:var(--radius-full);
  padding:0.65rem 1.4rem;
  font-weight:600;
  font-size:0.95rem;
  text-decoration:none;
  cursor:pointer;
  transition:var(--transition);
}
.btn.primary{
  background:var(--primary);
  color:var(--white);
  box-shadow:0 12px 25px rgba(79,70,229,.25);
}
.btn.ghost{
  background:transparent;
  border:1px solid rgba(15,27,42,.18);
  color:var(--gray-800);
  backdrop-filter:blur(6px);
}
.btn.primary:hover{opacity:.9;}
.btn.ghost:hover{border-color:var(--primary); color:var(--primary);}
.eyebrow{
  text-transform:uppercase;
  font-size:0.75rem;
  letter-spacing:0.2em;
  color:var(--primary);
  margin-bottom:0.4rem;
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats-section {
  margin-bottom: var(--spacing-lg);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-blue);
}

.stat-card.gradient-blue::before { background: var(--gradient-blue); }
.stat-card.gradient-green::before { background: var(--gradient-green); }
.stat-card.gradient-orange::before { background: var(--gradient-orange); }
.stat-card.gradient-red::before { background: var(--gradient-red); }

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

.stat-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: white;
  flex-shrink: 0;
}

.stat-card.gradient-blue .stat-icon { background: var(--gradient-blue); }
.stat-card.gradient-green .stat-icon { background: var(--gradient-green); }
.stat-card.gradient-orange .stat-icon { background: var(--gradient-orange); }
.stat-card.gradient-red .stat-icon { background: var(--gradient-red); }

.stat-details {
  flex: 1;
  min-width: 0;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: 500;
  margin: 0 0 0.25rem 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gray-900);
  margin: 0 0 0.5rem 0;
  line-height: 1;
}

.stat-change {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-600);
}

.stat-change.positive { color: var(--success); }
.stat-change.warning { color: var(--warning); }
.stat-change.negative { color: var(--danger); }

.grid-two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.grid-two.grid-chart {
  grid-template-columns: minmax(320px, 2fr) minmax(280px, 1fr);
}

/* ============================================
   MAIN GRID
   ============================================ */
.main-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.chart-section, .sidebar-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* ============================================
   PANEL STYLES
   ============================================ */
.panel {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

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

.panel-header h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0 0 0.25rem 0;
}

.panel-header p {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin: 0;
}

.panel-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-50);
  border: none;
  border-radius: var(--radius-md);
  color: var(--gray-600);
  cursor: pointer;
  transition: var(--transition);
}

.btn-icon:hover {
  background: var(--gray-100);
  color: var(--primary);
}

.btn-link {
  background: none;
  border: none;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.time-badge {
  padding: 0.375rem 0.75rem;
  background: var(--gray-50);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-600);
}

/* ============================================
   CHART PANEL
   ============================================ */
.chart-panel {
  min-height: 480px;
}

.chart-container {
  height: 360px;
  position: relative;
}

/* ============================================
   ACTIVITY PANEL
   ============================================ */
.activity-panel .activity-list {
  max-height: 320px;
  overflow-y: auto;
  padding-right: var(--spacing-sm);
}

.activity-list::-webkit-scrollbar {
  width: 6px;
}

.activity-list::-webkit-scrollbar-track {
  background: var(--gray-50);
  border-radius: var(--radius-full);
}

.activity-list::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: var(--radius-full);
}

.activity-list::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}

.activity-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-sm);
  transition: var(--transition);
}

.activity-item:hover {
  background: var(--gray-50);
}

.activity-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: white;
  font-size: 1.125rem;
}

.activity-icon.blue { background: var(--gradient-blue); }
.activity-icon.green { background: var(--gradient-green); }
.activity-icon.orange { background: var(--gradient-orange); }

.activity-details {
  flex: 1;
  min-width: 0;
}

.activity-title {
  font-weight: 600;
  color: var(--gray-900);
  margin: 0 0 0.25rem 0;
  font-size: 0.9rem;
}

.activity-time {
  font-size: 0.8rem;
  color: var(--gray-500);
}

/* ============================================
   NOTIFICATIONS PANEL
   ============================================ */
.notifications-panel .notifications-list {
  max-height: 300px;
  overflow-y: auto;
}

.notification-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-sm);
  background: var(--gray-50);
  border-left: 3px solid transparent;
  transition: var(--transition);
}

.notification-item.info { border-left-color: var(--info); }
.notification-item.warn { border-left-color: var(--warning); }
.notification-item.success { border-left-color: var(--success); }
.notification-item.error { border-left-color: var(--danger); }

.notification-item:hover {
  background: var(--gray-100);
  transform: translateX(4px);
}

.notification-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
}

.notification-icon.info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--info);
}

.notification-icon.warn {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.notification-content {
  flex: 1;
  min-width: 0;
}

.notification-content p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--gray-700);
  line-height: 1.5;
}

.notification-content strong {
  color: var(--gray-900);
  font-weight: 600;
}

/* ============================================
   QUICK ACTIONS SECTION
   ============================================ */
.actions-section {
  margin-bottom: var(--spacing-lg);
}

.quick-actions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.quick-action-card {
  padding: var(--spacing-xl);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--spacing-md);
  transition: var(--transition);
  border: 2px solid transparent;
}

.quick-action-card:hover {
  background: white;
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.quick-action-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
}

.quick-action-icon.blue { background: var(--gradient-blue); }
.quick-action-icon.green { background: var(--gradient-green); }
.quick-action-icon.orange { background: var(--gradient-orange); }
.quick-action-icon.purple { background: var(--gradient-purple); }

.quick-action-card h4 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
}

.quick-action-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--gray-500);
}

.team-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.team-item {
  padding: var(--spacing-md);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.team-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.team-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.team-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--gradient-purple);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.team-status {
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.25rem 0.9rem;
  border-radius: var(--radius-full);
  background: rgba(79,70,229,.12);
  color: var(--primary);
}

.team-status.offline { background: rgba(239,68,68,.12); color: var(--danger); }
.team-status.away { background: rgba(245,158,11,.12); color: var(--warning); }

.timeline {
  list-style: none;
  margin: 0;
  padding-left: 0;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gray-200);
}

.timeline-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  padding-left: 36px;
  margin-bottom: var(--spacing-md);
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 10px;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(79,70,229,.2);
}

.timeline-item strong {
  display: block;
  font-size: 0.95rem;
  color: var(--gray-900);
}

.timeline-item span {
  display: block;
  color: var(--gray-600);
  font-size: 0.9rem;
}

.pill {
  padding: 0.25rem 0.9rem;
  border-radius: var(--radius-full);
  background: var(--gray-100);
  font-weight: 600;
  font-size: 0.8rem;
}

.pill.warn { background: rgba(245,158,11,.2); color: var(--warning); }
.pill.success { background: rgba(16,185,129,.2); color: var(--success); }

/* ============================================
   FOOTER
   ============================================ */
.dashboard-footer {
  background: var(--white);
  padding: var(--spacing-xl) var(--spacing-2xl);
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--gray-600);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-links a {
  color: var(--gray-600);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.stat-card,
.panel,
.quick-action-card {
  animation: fadeIn 0.5s ease-out;
}

.badge-dot {
  animation: pulse 2s infinite;
}

/* ============================================
   UI/UX IMPROVEMENTS - Professional
   ============================================ */

/* Skip Links for Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: white;
  padding: 8px 16px;
  text-decoration: none;
  border-radius: 0 0 var(--radius-md) 0;
  font-weight: 600;
  z-index: 10000;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 0;
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Enhanced Focus Visible */
*:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.nav-item:focus-visible,
.btn-logout:focus-visible,
.icon-btn:focus-visible,
.quick-action-card:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* ============================================
   TOAST NOTIFICATION SYSTEM
   ============================================ */
.toast-container {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
  max-width: 420px;
}

.toast {
  background: var(--white);
  padding: 16px 20px;
  border-radius: var(--radius-xl);
  box-shadow: 0 10px 40px rgba(0,0,0,0.15), 0 0 0 1px rgba(0,0,0,0.05);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 300px;
  pointer-events: auto;
  animation: slideInRight 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-left: 4px solid var(--info);
  backdrop-filter: blur(10px);
}

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

.toast-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: var(--danger); }
.toast.warning .toast-icon { color: var(--warning); }
.toast.info .toast-icon { color: var(--info); }

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-message {
  font-size: 0.9rem;
  color: var(--gray-600);
  margin: 0;
  line-height: 1.4;
}

.toast-close {
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.2s;
  padding: 4px;
  color: var(--gray-600);
  flex-shrink: 0;
}

.toast-close:hover {
  opacity: 1;
}

@keyframes slideInRight {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(400px);
    opacity: 0;
  }
}

/* ============================================
   SKELETON SCREENS
   ============================================ */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--gray-100) 0%,
    var(--gray-200) 50%,
    var(--gray-100) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 16px;
  margin-bottom: 8px;
  border-radius: var(--radius-sm);
}

.skeleton-title {
  height: 24px;
  width: 60%;
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
}

.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
}

.skeleton-wrapper {
  opacity: 0.7;
}

/* ============================================
   ENHANCED BUTTON STATES
   ============================================ */
.btn-icon,
.icon-btn,
.btn-logout {
  position: relative;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.btn-icon:active,
.icon-btn:active,
.btn-logout:active {
  transform: scale(0.95);
}

/* Loading State */
.btn-icon.loading,
.icon-btn.loading,
.btn-logout.loading {
  pointer-events: none;
  color: transparent !important;
}

.btn-icon.loading::after,
.icon-btn.loading::after,
.btn-logout.loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin: -8px 0 0 -8px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  color: var(--gray-600);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Ripple Effect */
.btn-icon::before,
.icon-btn::before,
.quick-action-card::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-icon:active::before,
.icon-btn:active::before,
.quick-action-card:active::before {
  width: 100%;
  height: 100%;
}

/* ============================================
   RICH TOOLTIPS
   ============================================ */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::before,
[data-tooltip]::after {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10001;
}

[data-tooltip]::before {
  content: attr(data-tooltip);
  background: var(--gray-900);
  color: white;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  white-space: nowrap;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  font-weight: 500;
}

[data-tooltip]::after {
  content: '';
  border: 6px solid transparent;
  border-top-color: var(--gray-900);
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
}

[data-tooltip]:hover::before,
[data-tooltip]:hover::after,
[data-tooltip]:focus-visible::before,
[data-tooltip]:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

[data-shortcut]::before {
  content: attr(data-tooltip) " (" attr(data-shortcut) ")";
}

/* ============================================
   EMPTY STATES
   ============================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  text-align: center;
  min-height: 300px;
}

.empty-state-icon {
  width: 80px;
  height: 80px;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--gray-400);
  margin-bottom: var(--spacing-lg);
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin: 0 0 var(--spacing-sm) 0;
}

.empty-state-description {
  color: var(--gray-500);
  margin: 0 0 var(--spacing-lg) 0;
  max-width: 400px;
  line-height: 1.6;
}

.empty-state-action {
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.empty-state-action:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   DARK MODE
   ============================================ */
body.dark-mode {
  --white: #1F2937;
  --gray-50: #111827;
  --gray-100: #1F2937;
  --gray-200: #374151;
  --gray-300: #4B5563;
  --gray-400: #6B7280;
  --gray-500: #9CA3AF;
  --gray-600: #D1D5DB;
  --gray-700: #E5E7EB;
  --gray-800: #F3F4F6;
  --gray-900: #F9FAFB;
  
  background: var(--gray-50);
  color: var(--gray-900);
}

body.dark-mode .sidebar {
  background: linear-gradient(180deg, #0D1B2A 0%, #000000 100%);
}

body.dark-mode .top-header {
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
}

body.dark-mode .panel,
body.dark-mode .stat-card {
  background: var(--gray-100);
}

body.dark-mode .search-box input {
  background: var(--gray-200);
  color: var(--gray-900);
  border-color: var(--gray-300);
}

body.dark-mode .toast {
  background: var(--gray-100);
  border-color: var(--gray-200);
}

body.dark-mode .empty-state-icon {
  background: var(--gray-200);
  color: var(--gray-500);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1400px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1200px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
  
  .quick-actions-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  
  .sidebar.active {
    transform: translateX(0);
  }
  
  .main-wrapper {
    margin-left: 0;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .quick-actions-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .top-header {
    padding: var(--spacing-md);
    flex-wrap: wrap;
  }
  
  .search-box {
    width: 100%;
    order: 3;
  }
  
  .dashboard-content {
    padding: var(--spacing-md);
  }
  
  .toast-container {
    right: 12px;
    left: 12px;
    top: 60px;
  }
  
  .toast {
    min-width: auto;
  }
  
  [data-tooltip]::before {
    font-size: 0.75rem;
    padding: 6px 10px;
  }
  
  .empty-state {
    padding: var(--spacing-xl) var(--spacing-md);
    min-height: 200px;
  }
  
  .empty-state-icon {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }
}