/**
 * MonSyndicFacile - Design System V2
 * "Confiance Moderne" - 2026
 */

/* ============================================================================
   FONTS IMPORT
   ============================================================================ */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ============================================================================
   CSS VARIABLES - Design Tokens
   ============================================================================ */
:root {
  /* Colors - Primary */
  --color-primary: #3B82F6;
  --color-primary-hover: #2563EB;
  --color-primary-pressed: #1E40AF;
  --color-primary-light: #DBEAFE;
  --color-primary-dark: #1E3A8A;

  /* Colors - Secondary */
  --color-secondary: #8B5CF6;
  --color-secondary-hover: #7C3AED;
  --color-secondary-light: #EDE9FE;

  /* Colors - Accent */
  --color-accent: #F59E0B;
  --color-accent-hover: #D97706;
  --color-accent-light: #FEF3C7;

  /* Colors - Success */
  --color-success: #10B981;
  --color-success-light: #D1FAE5;

  /* Colors - Danger */
  --color-danger: #EF4444;
  --color-danger-light: #FEE2E2;

  /* Colors - Neutrals */
  --color-text: #0F172A;
  --color-text-secondary: #475569;
  --color-text-muted: #94A3B8;
  --color-background: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-border: #E2E8F0;

  /* Spacing - 8px base */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 1rem;      /* 16px */
  --space-md: 1.5rem;    /* 24px */
  --space-lg: 2rem;      /* 32px */
  --space-xl: 3rem;      /* 48px */
  --space-2xl: 4rem;     /* 64px */
  --space-3xl: 6rem;     /* 96px */
  --space-4xl: 8rem;     /* 128px */

  /* Border Radius */
  --radius-sm: 0.5rem;   /* 8px */
  --radius-md: 0.75rem;  /* 12px */
  --radius-lg: 1rem;     /* 16px */
  --radius-xl: 1.5rem;   /* 24px */
  --radius-2xl: 2rem;    /* 32px */
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15), 0 10px 10px rgba(0, 0, 0, 0.04);

  /* Colored Shadows */
  --shadow-primary: 0 10px 25px rgba(59, 130, 246, 0.3);
  --shadow-secondary: 0 10px 25px rgba(139, 92, 246, 0.25);
  --shadow-accent: 0 10px 25px rgba(245, 158, 11, 0.25);

  /* Typography */
  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

/* ============================================================================
   TYPOGRAPHY SCALE
   ============================================================================ */
.text-hero {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.text-display {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.text-headline {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.3;
}

.text-title {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.4;
}

.text-body-lg {
  font-size: 1.25rem;
  line-height: 1.6;
}

.text-body {
  font-size: 1rem;
  line-height: 1.6;
}

.text-body-sm {
  font-size: 0.875rem;
  line-height: 1.5;
}

.text-caption {
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================================================
   GRADIENTS
   ============================================================================ */
.gradient-hero {
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 50%, #EC4899 100%);
  background-size: 200% 200%;
  animation: gradient-shift 15s ease infinite;
}

.gradient-mesh {
  background:
    radial-gradient(at 27% 37%, rgba(59, 130, 246, 0.3) 0px, transparent 50%),
    radial-gradient(at 97% 21%, rgba(139, 92, 246, 0.3) 0px, transparent 50%),
    radial-gradient(at 52% 99%, rgba(236, 72, 153, 0.3) 0px, transparent 50%),
    radial-gradient(at 10% 29%, rgba(59, 130, 246, 0.2) 0px, transparent 50%),
    radial-gradient(at 97% 96%, rgba(245, 158, 11, 0.2) 0px, transparent 50%);
  background-size: 400% 400%;
  animation: mesh-move 20s ease infinite;
}

.gradient-primary {
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
}

.gradient-card-hover {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes mesh-move {
  0%, 100% { background-position: 0% 0%; }
  25% { background-position: 40% 50%; }
  50% { background-position: 100% 100%; }
  75% { background-position: 60% 50%; }
}

/* ============================================================================
   BUTTONS
   ============================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 1rem 2rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  color: white;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 15px 35px rgba(59, 130, 246, 0.4);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn-accent {
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: white;
  box-shadow: var(--shadow-accent);
}

.btn-accent:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 15px 35px rgba(245, 158, 11, 0.4);
}

.btn-lg {
  padding: 1.25rem 2.5rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
}

/* Glow effect on hover */
.btn-glow {
  position: relative;
  overflow: hidden;
}

.btn-glow::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-glow:hover::before {
  width: 300px;
  height: 300px;
}

/* ============================================================================
   CARDS
   ============================================================================ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.card-hover:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(59, 130, 246, 0.2);
}

.card-glow:hover {
  box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
}

.card-highlight {
  position: relative;
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-primary);
}

.card-highlight::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-lg);
  opacity: 0.1;
  z-index: -1;
}

/* ============================================================================
   BADGES
   ============================================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.badge-success {
  background: var(--color-success-light);
  color: var(--color-success);
}

.badge-accent {
  background: var(--color-accent-light);
  color: var(--color-accent-hover);
}

.badge-gradient {
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  color: white;
}

/* ============================================================================
   FORMS
   ============================================================================ */
.input {
  width: 100%;
  padding: 1rem 1.25rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  outline: none;
}

.input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input::placeholder {
  color: var(--color-text-muted);
}

.input-error {
  border-color: var(--color-danger);
}

.input-error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }

/* ============================================================================
   UTILITIES
   ============================================================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-xl);
  }
}

.section {
  padding: var(--space-3xl) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-4xl) 0;
  }
}

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

/* Glassmorphism */
.glass {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Dot pattern background */
.dot-pattern {
  background-image: radial-gradient(circle, var(--color-border) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* ============================================================================
   CUSTOM SCROLLBAR
   ============================================================================ */
::-webkit-scrollbar {
  width: 12px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-text-muted);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* ============================================================================
   SELECTION
   ============================================================================ */
::selection {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* ============================================================================
   FOCUS VISIBLE
   ============================================================================ */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}