/* ============================================
   iMenu Dashboard - Modern Design System
   ============================================ */

/* === CSS Variables === */
:root {
  /* Primary Colors - Modern Purple/Blue Gradient */
  --primary-50: #f5f3ff;
  --primary-100: #ede9fe;
  --primary-200: #ddd6fe;
  --primary-300: #c4b5fd;
  --primary-400: #a78bfa;
  --primary-500: #8b5cf6;
  --primary-600: #7c3aed;
  --primary-700: #6d28d9;
  --primary-800: #5b21b6;
  --primary-900: #4c1d95;

  /* Accent Colors */
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
  --accent-orange: #f97316;
  --accent-green: #10b981;
  --accent-red: #ef4444;

  /* Neutral Colors */
  --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;

  /* Dark Mode Colors */
  --dark-bg: #0f172a;
  --dark-surface: #1e293b;
  --dark-border: #334155;
  --dark-text: #f1f5f9;
  --dark-muted: #94a3b8;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.3);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* === Modern Gradient Backgrounds === */
.gradient-primary {
  background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-blue) 100%);
}

.gradient-secondary {
  background: linear-gradient(135deg, var(--accent-pink) 0%, var(--accent-orange) 100%);
}

.gradient-success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.gradient-dark {
  background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
}

.gradient-mesh {
  background:
    radial-gradient(at 0% 0%, rgba(139, 92, 246, 0.1) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(59, 130, 246, 0.1) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(236, 72, 153, 0.1) 0px, transparent 50%),
    radial-gradient(at 0% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
}

/* === Card Styles === */
.card-modern {
  background: white;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--gray-200);
}

.card-modern:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-300);
}

.card-glass {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-lg);
}

.card-dark {
  background: var(--dark-surface);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--dark-border);
}

/* === Button Styles === */
.btn-primary {
  background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-blue) 100%);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

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

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  transition: all var(--transition-base);
  border: 1px solid var(--gray-300);
  cursor: pointer;
}

.btn-secondary:hover {
  background: var(--gray-200);
  border-color: var(--gray-400);
}

/* === Sidebar Styles === */
.sidebar {
  background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  box-shadow: var(--shadow-xl);
}

.sidebar-item {
  transition: all var(--transition-base);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

.sidebar-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent-purple);
  transform: scaleY(0);
  transition: transform var(--transition-base);
}

.sidebar-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(4px);
}

.sidebar-item:hover::before {
  transform: scaleY(1);
}

.sidebar-item.active {
  background: rgba(139, 92, 246, 0.2);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.2);
}

.sidebar-item.active::before {
  transform: scaleY(1);
}

/* === Badge Styles === */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
}

.badge-primary {
  background: var(--primary-100);
  color: var(--primary-700);
}

.badge-success {
  background: #d1fae5;
  color: #065f46;
}

.badge-warning {
  background: #fef3c7;
  color: #92400e;
}

.badge-danger {
  background: #fee2e2;
  color: #991b1b;
}

.badge-info {
  background: #dbeafe;
  color: #1e40af;
}

/* === Skeleton Loaders === */
@keyframes skeleton-pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--gray-200) 25%,
    var(--gray-300) 50%,
    var(--gray-200) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s ease-in-out infinite;
  border-radius: 8px;
}

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

.skeleton-text {
  height: 1rem;
  margin-bottom: 0.5rem;
}

.skeleton-title {
  height: 1.5rem;
  width: 60%;
  margin-bottom: 1rem;
}

.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: 9999px;
}

.skeleton-card {
  height: 200px;
  border-radius: 16px;
}

/* === Stats Cards === */
.stat-card {
  background: white;
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.stat-card:hover::before {
  transform: scaleX(1);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-300);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.stat-icon.purple {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(139, 92, 246, 0.2));
  color: var(--accent-purple);
}

.stat-icon.blue {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(59, 130, 246, 0.2));
  color: var(--accent-blue);
}

.stat-icon.green {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.2));
  color: var(--accent-green);
}

.stat-icon.orange {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.1), rgba(249, 115, 22, 0.2));
  color: var(--accent-orange);
}

/* === Toast Notifications === */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow-2xl);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: 400px;
  animation: toast-slide-in 0.3s ease-out;
  z-index: 9999;
  border: 1px solid var(--gray-200);
}

@keyframes toast-slide-in {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.toast.success {
  border-left: 4px solid var(--accent-green);
}

.toast.error {
  border-left: 4px solid var(--accent-red);
}

.toast.warning {
  border-left: 4px solid var(--accent-orange);
}

.toast.info {
  border-left: 4px solid var(--accent-blue);
}

/* === Form Elements === */
.input-modern {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--gray-300);
  border-radius: 10px;
  font-size: 1rem;
  transition: all var(--transition-base);
  background: white;
}

.input-modern:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.input-modern:hover {
  border-color: var(--gray-400);
}

/* === Table Styles === */
.table-modern {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.table-modern thead {
  background: var(--gray-50);
}

.table-modern th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--gray-700);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-modern tbody tr {
  border-bottom: 1px solid var(--gray-200);
  transition: all var(--transition-fast);
}

.table-modern tbody tr:hover {
  background: var(--gray-50);
}

.table-modern td {
  padding: 1rem;
  color: var(--gray-600);
}

/* === Animations === */
@keyframes fade-in {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slide-down {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-fade-in {
  animation: fade-in 0.3s ease-out;
}

.animate-slide-up {
  animation: slide-up 0.4s ease-out;
}

.animate-slide-down {
  animation: slide-down 0.4s ease-out;
}

.animate-scale-in {
  animation: scale-in 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* === Empty States === */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
}

.empty-state-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--gray-400);
}

.empty-state-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

.empty-state-description {
  color: var(--gray-500);
  margin-bottom: 2rem;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* === Progress Indicators === */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: 9999px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue));
  border-radius: 9999px;
  transition: width var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: progress-shine 2s ease-in-out infinite;
}

@keyframes progress-shine {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* === Utilities === */
.blur-backdrop {
  backdrop-filter: blur(8px);
}

.glass-effect {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
}

/* === Responsive === */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -100%;
    transition: left var(--transition-base);
    z-index: 50;
  }

  .sidebar.open {
    left: 0;
  }

  .toast {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }

  .stat-card {
    padding: 1rem;
  }
}

/* === Dark Mode Support === */
@media (prefers-color-scheme: dark) {
  .card-modern {
    background: var(--dark-surface);
    border-color: var(--dark-border);
    color: var(--dark-text);
  }

  .input-modern {
    background: var(--dark-surface);
    border-color: var(--dark-border);
    color: var(--dark-text);
  }

  .table-modern thead {
    background: var(--dark-surface);
  }

  .table-modern th {
    color: var(--dark-muted);
  }

  .table-modern tbody tr {
    border-bottom-color: var(--dark-border);
  }

  .table-modern tbody tr:hover {
    background: var(--dark-surface);
  }
}