@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* Premium Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Luxury Color Palette */
  --brand-blue: #001659;
  --brand-blue-900: #000b2e;
  --brand-blue-light: #002b9e;
  --brand-gold: #d4af37;
  --brand-gold-dark: #b8860b;
  --brand-gold-light: #f1e5ac;

  /* Neutral Palette */
  --bg-white: #ffffff;
  --bg-soft: #f8fafc;
  --text-dark: #0f172a;
  --text-muted: #475569;
  --border-light: rgba(0, 22, 89, 0.08);

  /* Shared Tokens */
  --primary-blue: var(--brand-blue);
  --secondary-blue: var(--brand-blue-900);
  --accent-yellow: var(--brand-gold);
  --light-bg: var(--bg-soft);

  /* Espacements fluides */
  --spacing-xs: clamp(0.5rem, 1vw, 0.75rem);
  --spacing-sm: clamp(0.75rem, 1.5vw, 1rem);
  --spacing-md: clamp(1rem, 2vw, 1.5rem);
  --spacing-lg: clamp(1.5rem, 3vw, 2.5rem);
  --spacing-xl: clamp(2rem, 4vw, 4rem);

  /* Typographie fluide */
  --text-xs: clamp(0.75rem, 1vw, 0.875rem);
  --text-sm: clamp(0.875rem, 1.2vw, 1rem);
  --text-base: clamp(1rem, 1.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 2vw, 1.5rem);
  --text-xl: clamp(1.5rem, 2.5vw, 2rem);
  --text-2xl: clamp(2rem, 4vw, 3rem);
  --text-3xl: clamp(2.5rem, 5vw, 4rem);

  /* Timing functions */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-elastic: cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* Durées */
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* Ombres */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-blur: 12px;
}

/* ========================================
   Animations Keyframes
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse-glow {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(10, 60, 168, 0.4);
  }

  50% {
    box-shadow: 0 0 0 15px rgba(10, 60, 168, 0);
  }
}

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

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

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

/* ========================================
   Classes d'Animation Utilitaires
   ======================================== */
.animate-fade-in-up {
  animation: fadeInUp var(--duration-slow) var(--ease-smooth) both;
}

.animate-fade-in-down {
  animation: fadeInDown var(--duration-slow) var(--ease-smooth) both;
}

.animate-fade-in-scale {
  animation: fadeInScale var(--duration-slow) var(--ease-smooth) both;
}

.animate-slide-in-right {
  animation: slideInRight var(--duration-slow) var(--ease-smooth) both;
}

.animate-slide-in-left {
  animation: slideInLeft var(--duration-slow) var(--ease-smooth) both;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* Délais d'animation */
.delay-100 {
  animation-delay: 100ms;
}

.delay-200 {
  animation-delay: 200ms;
}

.delay-300 {
  animation-delay: 300ms;
}

.delay-400 {
  animation-delay: 400ms;
}

.delay-500 {
  animation-delay: 500ms;
}

.delay-600 {
  animation-delay: 600ms;
}

.delay-700 {
  animation-delay: 700ms;
}

.delay-800 {
  animation-delay: 800ms;
}

/* ========================================
   Effets de Hover Premium
   ======================================== */
.hover-lift {
  transition: transform var(--duration-normal) var(--ease-smooth),
    box-shadow var(--duration-normal) var(--ease-smooth);
}

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.hover-grow {
  transition: transform var(--duration-normal) var(--ease-bounce);
}

.hover-grow:hover {
  transform: scale(1.05);
}

.hover-glow {
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.hover-glow::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent, rgba(255, 204, 0, 0.3), transparent);
  transform: translateX(-100%);
  transition: transform var(--duration-slow) var(--ease-smooth);
}

.hover-glow:hover::before {
  transform: translateX(100%);
}

.hover-shine {
  position: relative;
  overflow: hidden;
}

.hover-shine::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
      rgba(255, 255, 255, 0) 0%,
      rgba(255, 255, 255, 0.3) 50%,
      rgba(255, 255, 255, 0) 100%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease-smooth);
}

.hover-shine:hover::after {
  transform: translateX(100%);
}

/* ========================================
   Glassmorphism Effects
   ======================================== */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: 1rem;
  box-shadow: var(--shadow-md);
}

.glass-header {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.premium-gradient-bg {
  background: linear-gradient(135deg, var(--brand-blue-900) 0%, var(--brand-blue) 100%);
}

.gold-gradient-text {
  background: linear-gradient(135deg, var(--brand-gold-dark) 0%, var(--brand-gold) 50%, var(--brand-gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   Boutons Premium
   ======================================== */
.btn-premium {
  position: relative;
  overflow: hidden;
  padding: 0.875rem 2rem;
  font-weight: 600;
  border-radius: 0.75rem;
  transition: all var(--duration-normal) var(--ease-smooth);
  box-shadow: var(--shadow-md);
}

.btn-premium::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transform: translateX(-100%);
  transition: transform var(--duration-slow) var(--ease-smooth);
}

.btn-premium:hover::before {
  transform: translateX(100%);
}

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

.btn-premium:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Variante Primary */
.btn-premium-primary {
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-light));
  color: white;
}

.btn-premium-primary:hover {
  background: linear-gradient(135deg, var(--brand-blue-light), var(--brand-blue));
}

/* Variante Secondary */
.btn-premium-secondary {
  background: linear-gradient(135deg, var(--brand-yellow), var(--brand-yellow-dark));
  color: var(--brand-blue-900);
}

.btn-premium-secondary:hover {
  background: linear-gradient(135deg, var(--brand-yellow-dark), var(--brand-yellow));
}

/* ========================================
   Cards Premium avec Effets 3D
   ======================================== */
.card-3d {
  position: relative;
  transition: transform var(--duration-normal) var(--ease-smooth);
  transform-style: preserve-3d;
  perspective: 1000px;
}

.card-3d:hover {
  transform: rotateX(5deg) rotateY(5deg);
}

.card-parallax {
  position: relative;
  overflow: hidden;
  border-radius: 1rem;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.card-parallax img {
  transition: transform var(--duration-slow) var(--ease-smooth);
}

.card-parallax:hover img {
  transform: scale(1.1);
}

.card-parallax::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
      rgba(0, 0, 0, 0.7) 0%,
      transparent 60%);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-smooth);
}

.card-parallax:hover::after {
  opacity: 1;
}

/* ========================================
   Effets de Scroll
   ======================================== */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-smooth),
    transform 0.6s var(--ease-smooth);
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Loading Animations
   ======================================== */
.skeleton {
  background: linear-gradient(90deg,
      #f0f0f0 0%,
      #e0e0e0 50%,
      #f0f0f0 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 0.5rem;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(10, 60, 168, 0.1);
  border-top-color: var(--brand-blue);
  border-radius: 50%;
  animation: rotate 1s linear infinite;
}

/* ========================================
   Responsive Mobile First
   ======================================== */
@media (max-width: 768px) {
  :root {
    --spacing-xl: clamp(1.5rem, 3vw, 2rem);
    --text-3xl: clamp(2rem, 6vw, 2.5rem);
  }

  .card-3d:hover {
    transform: none;
  }

  .hover-lift:active {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
  }

  /* Touch-friendly sur mobile */
  .btn-premium {
    min-height: 44px;
    min-width: 44px;
  }
}

@media (max-width: 480px) {
  .glass-card {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }

  /* Réduit les animations sur très petits écrans */
  .animate-float {
    animation: none;
  }
}

/* ========================================
   Accessibilité & Performance
   ======================================== */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Focus visible pour accessibilité */
:focus-visible {
  outline: 2px solid var(--brand-yellow);
  outline-offset: 3px;
  border-radius: 0.25rem;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --glass-bg: rgba(0, 0, 0, 0.3);
    --glass-border: rgba(255, 255, 255, 0.1);
  }

  .skeleton {
    background: linear-gradient(90deg,
        #2a2a2a 0%,
        #3a3a3a 50%,
        #2a2a2a 100%);
  }
}

/* ========================================
   Micro-interactions
   ======================================== */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::after {
  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;
}

.ripple:active::after {
  width: 300px;
  height: 300px;
}

/* Smooth scroll */
html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-gradient {
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.border-gradient {
  position: relative;
  background: white;
  border-radius: 1rem;
}

.border-gradient::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 1rem;
  padding: 2px;
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-yellow));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
}