/**
 * SENBILLETS PREMIUM DESIGN SYSTEM
 * Ultra-modern, professional & premium UX
 */

/* ========================================
   VARIABLES & DESIGN TOKENS
   ======================================== */
:root {
  /* Primary Colors - Gradient System */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --primary-gradient-hover: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
  --accent-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  
  /* Color Palette */
  --color-primary: #667eea;
  --color-primary-dark: #5568d3;
  --color-primary-light: #8b9df8;
  --color-secondary: #764ba2;
  --color-accent: #f5576c;
  --color-success: #00f2fe;
  --color-warning: #fee140;
  --color-danger: #ff6b6b;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-black: #0a0e27;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Background System */
  --bg-primary: #0a0e27;
  --bg-secondary: #1a1f3a;
  --bg-tertiary: #252b48;
  --bg-glass: rgba(255, 255, 255, 0.05);
  --bg-glass-hover: rgba(255, 255, 255, 0.1);
  
  /* Shadows - Layered 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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
  --shadow-glow-lg: 0 0 40px rgba(102, 126, 234, 0.4);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Poppins', var(--font-sans);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Z-index System */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-100);
  background: var(--bg-primary);
  overflow-x: hidden;
}

/* ========================================
   GLASSMORPHISM COMPONENTS
   ======================================== */
.glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.glass-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

.glass-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(102, 126, 234, 0.3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.glass-navbar {
  background: rgba(10, 14, 39, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* ========================================
   PREMIUM BUTTONS
   ======================================== */
.btn-premium {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.025em;
  text-transform: uppercase;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  overflow: hidden;
  transition: all var(--transition-base);
  z-index: 1;
}

.btn-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.btn-premium:hover::before {
  opacity: 1;
}

.btn-premium-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-premium-primary:hover {
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
  transform: translateY(-2px);
}

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

.btn-premium-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  box-shadow: 0 0 0 rgba(102, 126, 234, 0);
}

.btn-premium-outline:hover {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
  transform: translateY(-2px);
}

.btn-premium-glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-premium-glass:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(102, 126, 234, 0.5);
  box-shadow: var(--shadow-glow);
}

/* ========================================
   PREMIUM CARDS
   ======================================== */
.card-premium {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.card-premium:hover::before {
  opacity: 0.05;
}

.card-premium:hover {
  border-color: rgba(102, 126, 234, 0.3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-8px) scale(1.02);
}

.card-premium > * {
  position: relative;
  z-index: 1;
}

.card-premium-bordered {
  border: 2px solid transparent;
  background: linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
              var(--primary-gradient) border-box;
}

/* ========================================
   PREMIUM INPUTS
   ======================================== */
.input-premium {
  width: 100%;
  padding: 0.875rem 1.25rem;
  font-size: 0.9375rem;
  color: var(--color-gray-100);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  outline: none;
}

.input-premium::placeholder {
  color: var(--color-gray-400);
}

.input-premium:focus {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-premium:hover:not(:focus) {
  border-color: rgba(255, 255, 255, 0.2);
}

/* ========================================
   PREMIUM NAVBAR
   ======================================== */
.navbar-premium {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: rgba(10, 14, 39, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  transition: all var(--transition-base);
}

.navbar-premium.scrolled {
  background: rgba(10, 14, 39, 0.95);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
}

.nav-link-premium {
  position: relative;
  padding: 0.5rem 1rem;
  color: var(--color-gray-300);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-base);
  overflow: hidden;
}

.nav-link-premium::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

.nav-link-premium:hover {
  color: var(--color-white);
}

.nav-link-premium:hover::before {
  width: 80%;
}

.nav-link-premium.active {
  color: var(--color-primary-light);
}

.nav-link-premium.active::before {
  width: 80%;
}

/* ========================================
   ANIMATIONS & MICRO-INTERACTIONS
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in {
  animation: fadeIn 0.4s ease-out;
}

.animate-slide-in-right {
  animation: slideInRight 0.5s ease-out;
}

/* ========================================
   GRADIENT TEXT
   ======================================== */
.gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.gradient-text-accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

/* ========================================
   BADGES & TAGS
   ======================================== */
.badge-premium {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.875rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.025em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.badge-premium-outline {
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  box-shadow: none;
}

/* ========================================
   LOADING & SKELETON
   ======================================== */
.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.03) 0%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.03) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

.spinner-premium {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

.hover-glow {
  transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

.blur-bg {
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ========================================
   RESPONSIVE UTILITIES
   ======================================== */
@media (max-width: 768px) {
  .glass-card {
    padding: var(--spacing-lg);
  }
  
  .btn-premium {
    padding: 0.625rem 1.25rem;
    font-size: 0.8125rem;
  }
  
  .card-premium {
    padding: var(--spacing-lg);
  }
}

/* ========================================
   SCROLLBAR STYLING
   ======================================== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--color-primary-light), var(--color-primary));
}

/* ========================================
   SELECTION STYLING
   ======================================== */
::selection {
  background: rgba(102, 126, 234, 0.3);
  color: white;
}

::-moz-selection {
  background: rgba(102, 126, 234, 0.3);
  color: white;
}