/* ============================================
   🎨 FORMATEUR INDÉPENDANT - DESIGN MODERNE
   Style: Minimaliste Premium
   ============================================ */

/* ============================================
   VARIABLES CSS
   ============================================ */
:root {
  /* Couleurs principales */
  --color-primary: #0F172A;      /* Slate foncé - sophistiqué */
  --color-accent: #06B6D4;       /* Cyan moderne - tech/innovation */
  --color-secondary: #F59E0B;    /* Ambre - chaleureux */
  --color-success: #10B981;      /* Vert - validation */
  
  /* Couleurs neutres */
  --color-white: #FFFFFF;
  --color-bg: #F8FAFC;           /* Gris très clair */
  --color-bg-alt: #F1F5F9;
  --color-text: #1E293B;
  --color-text-light: #64748B;
  --color-border: #E2E8F0;
  
  /* Typographie */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Espacements */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Ombres */
  --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);
  
  /* Bordures */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* 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);
  
  /* Conteneur */
  --container-max: 1200px;
  --container-padding: 1.5rem;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-regular);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

/* ============================================
   TYPOGRAPHIE
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1.125rem;
}

p {
  margin-bottom: 1rem;
  color: var(--color-text-light);
  font-size: 1.0625rem;
  line-height: 1.7;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

strong {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  width: 100%;
}

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

.section-sm {
  padding: var(--spacing-2xl) 0;
}

.section-lg {
  padding: 5rem 0;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--container-padding);
  gap: 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.02);
}

.logo-highlight {
  color: var(--color-accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-accent);
}

/* Menu Mobile */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 0.375rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-base);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform var(--transition-base);
  }
  
  .nav-menu.active {
    transform: translateX(0);
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-modern {
  min-height: 90vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  position: relative;
  overflow: hidden;
  padding: var(--spacing-3xl) 0;
}

.hero-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text {
  color: white;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  margin-bottom: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  color: white;
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #06B6D4 0%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-number {
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 450px;
  aspect-ratio: 3/4;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 3px solid rgba(255, 255, 255, 0.1);
}

.hero-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-badge {
  position: absolute;
  bottom: 2rem;
  left: -1rem;
  background: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-badge-icon {
  font-size: 1.5rem;
}

.hero-badge-content strong {
  display: block;
  color: var(--color-primary);
  font-size: 1.125rem;
}

.hero-badge-content span {
  color: var(--color-text-light);
  font-size: 0.875rem;
}

@media (max-width: 968px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-image {
    height: 400px;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-cta {
    justify-content: center;
  }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: white;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.4);
}

.btn-primary:hover {
  background: #0891B2;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 10px rgba(6, 182, 212, 0.3);
}

/* Effet ripple au clic */
.btn {
  position: relative;
  overflow: hidden;
}

.btn::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;
}

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

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

.btn-secondary:hover {
  background: var(--color-bg);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-ghost {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

.btn-lg {
  padding: 1.125rem 2.25rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

/* Effet brillance au hover */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(6, 182, 212, 0.1), 
    transparent
  );
  transition: left 0.6s;
}

.card:hover::before {
  left: 100%;
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.15);
}

/* Animation icon au hover */
.card:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 8px 20px rgba(6, 182, 212, 0.3);
}

.card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent), var(--color-success));
  color: white;
  font-size: 1.5rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.card-text {
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

/* ============================================
   SECTIONS
   ============================================ */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
}

.section-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--color-bg-alt);
  color: var(--color-accent);
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.section-description {
  font-size: 1.125rem;
  color: var(--color-text-light);
}

/* ============================================
   GRIDS
   ============================================ */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonial-card {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

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

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.testimonial-avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 3px solid var(--color-accent);
}

.testimonial-info h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.testimonial-info p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin: 0;
}

.testimonial-rating {
  color: var(--color-secondary);
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.testimonial-text {
  font-style: italic;
  color: var(--color-text);
  line-height: 1.7;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-col h3 {
  color: white;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.footer-col p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.75rem;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.875rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}

@media (max-width: 968px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center {
  text-align: center;
}

.text-primary {
  color: var(--color-primary);
}

.text-accent {
  color: var(--color-accent);
}

.bg-white {
  background: white;
}

.bg-alt {
  background: var(--color-bg-alt);
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

.fade-in {
  animation: fadeIn var(--transition-slow) ease-out;
}

.slide-up {
  animation: slideUp var(--transition-slow) ease-out;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: 8px;
  text-decoration: none;
  z-index: 100;
}

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

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 640px) {
  :root {
    --container-padding: 1rem;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .btn {
    width: 100%;
  }
  
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
  .header,
  .footer,
  .btn,
  .nav-toggle {
    display: none;
  }
}