/* ==========================================================================
   SITE EXPERT-COMPTABLE MODERNE - CSS RESPONSIVE CORRIGÉ
   Design moderne avec responsive parfait pour mobile/tablette/desktop
   ========================================================================== */

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

/* Variables CSS - Palette Expert-Comptable Professionnelle */
:root {
  /* === COULEUR PRIMAIRE : BLEU PROFESSIONNEL === */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;

  /* === COULEUR SECONDAIRE : GRIS NEUTRE === */
  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;

  /* === COULEUR ACCENT : VERT SUCCESS === */
  --accent-50: #f0fdf4;
  --accent-100: #dcfce7;
  --accent-200: #bbf7d0;
  --accent-300: #86efac;
  --accent-400: #4ade80;
  --accent-500: #22c55e;
  --accent-600: #16a34a;
  --accent-700: #15803d;
  --accent-800: #166534;
  --accent-900: #14532d;

  /* === COULEURS FONCTIONNELLES === */
  --color-background: var(--neutral-50);
  --color-surface: #ffffff;
  --color-surface-hover: var(--neutral-100);
  
  --color-text-primary: var(--neutral-900);
  --color-text-secondary: var(--neutral-600);
  --color-text-muted: var(--neutral-500);
  
  --color-border: var(--neutral-200);
  --color-border-focus: var(--primary-500);

  /* === DÉGRADÉS === */
  --gradient-primary: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  --gradient-subtle: linear-gradient(135deg, var(--neutral-50) 0%, var(--primary-50) 100%);
  --gradient-hero: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-800) 100%);

  /* === COULEURS BOUTONS === */
  --btn-primary-bg: var(--primary-600);
  --btn-primary-hover: var(--primary-700);
  --btn-primary-text: #ffffff;
  
  --btn-secondary-bg: var(--neutral-600);
  --btn-secondary-hover: var(--neutral-700);
  --btn-secondary-text: #ffffff;
  
  --btn-accent-bg: var(--accent-500);
  --btn-accent-hover: var(--accent-600);
  --btn-accent-text: #ffffff;

  /* === COULEURS SÉMANTIQUES === */
  --success: var(--accent-500);
  --warning: #f59e0b;
  --error: #ef4444;
  --info: var(--primary-500);

  /* === COMPATIBILITÉ === */
  --primary: var(--primary-600);
  --primary-dark: var(--primary-800);
  --secondary: var(--neutral-600);
  --accent: var(--accent-500);
  --dark: var(--neutral-900);
  --dark-light: var(--neutral-800);
  --gray: var(--neutral-500);
  --gray-light: var(--neutral-200);
  --gray-lighter: var(--neutral-100);
  --white: #ffffff;
  
  /* Typography moderne */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Plus Jakarta Sans', sans-serif;
  
  /* Spacing système */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Borders & Shadows */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  --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);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* Reset et base moderne */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.6;
  color: var(--neutral-900);
  background: var(--white);
  overflow-x: hidden;
}

/* Typography moderne RESPONSIVE */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--neutral-900);
}

h1 { font-size: clamp(1.75rem, 4vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.125rem, 2.5vw, 1.75rem); }
h4 { font-size: clamp(1rem, 2vw, 1.25rem); }

p {
  margin-bottom: var(--space-4);
  color: var(--neutral-500);
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  line-height: 1.6;
}

a {
  color: var(--primary-600);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

/* ==========================================================================
   CONTAINER SYSTÈME RESPONSIVE CORRIGÉ
   ========================================================================== */

.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px; /* PADDING MOBILE PAR DÉFAUT */
}

@media (min-width: 768px) {
  .container {
    padding: 0 40px;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 60px;
  }
}

@media (min-width: 1200px) {
  .container {
    padding: 0 80px;
  }
}

/* ==========================================================================
   HEADER MODERNE RESPONSIVE
   ========================================================================== */

.modern-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  z-index: 1000;
  transition: var(--transition-base);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  max-width: 1280px;
  margin: 0 auto;
}

.nav-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
}

.brand-logo {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.nav-cta-container {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-cta,
.nav-cta-contact,
.nav-cta-phone {
  background: var(--primary-600);
  color: var(--white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.875rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
  border: 2px solid var(--primary-600);
  text-decoration: none;
}

.nav-cta:hover,
.nav-cta-contact:hover,
.nav-cta-phone:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: var(--primary-700);
  border-color: var(--primary-700);
}

/* Menu mobile */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.mobile-toggle span {
  width: 24px;
  height: 3px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition-base);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -8px);
}

@media (max-width: 768px) {
  .nav-container {
    padding: var(--space-3) var(--space-4);
  }
  
  .brand-logo {
    height: 35px;
  }
  
  .nav-cta-container {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }
}

/* ==========================================================================
   HERO SECTION RESPONSIVE CORRIGÉ
   ========================================================================== */

.hero-modern {
  min-height: 100vh;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding-top: 80px; /* Compense le header fixe */
}

.hero-background {
  position: absolute;
  inset: 0;
  background-image: url('images/image10004.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: var(--space-12) 0;
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
}

/* HERO GRID RESPONSIVE CORRIGÉ */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 500px;
  gap: var(--space-8);
  align-items: center;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-left {
  text-align: left;
}

.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* RESPONSIVE HERO - MOBILE FIRST */
@media (max-width: 1200px) {
  .hero-grid {
    grid-template-columns: 1fr 450px;
    gap: var(--space-6);
  }
}

@media (max-width: 1024px) {
  .hero-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    text-align: center;
  }
  
  .hero-left {
    order: 2;
    text-align: center;
  }
  
  .hero-right {
    order: 1;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
  }
  
  .hero-modern {
    min-height: auto;
    padding-top: 100px;
  }
}

@media (max-width: 768px) {
  .hero-content {
    padding: var(--space-8) 0;
  }
  
  .hero-grid {
    gap: var(--space-6);
  }
  
  .hero-right {
    max-width: 100%;
  }
}

/* Typographie Hero Responsive */
.hero-title {
  font-size: clamp(1.5rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  color: var(--white);
}

.title-main {
  display: block;
  font-weight: 300;
}

.title-highlight {
  display: block;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-400) 0%, var(--accent-300) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: var(--space-6);
  opacity: 0.9;
  line-height: 1.6;
  color: var(--white);
}

.hero-description {
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  line-height: 1.6;
  margin-bottom: var(--space-6);
  color: var(--white);
  opacity: 0.85;
  font-style: italic;
}

/* Badges Hero */
.badge-promo {
  background: var(--gradient-primary);
  color: var(--white);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-6);
  display: inline-block;
  box-shadow: var(--shadow-lg);
}

.badge-promo .badge-desc {
  font-weight: 600;
  font-size: clamp(0.8rem, 1.5vw, 1rem);
}

.badge-oec {
  background: var(--accent-500);
  color: var(--white);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-xl);
  margin-top: var(--space-6);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  box-shadow: var(--shadow-lg);
}

.badge-oec .badge-text {
  font-weight: 600;
  font-size: clamp(0.8rem, 1.2vw, 0.9rem);
}

.badge-oec .badge-logo {
  background: rgba(255, 255, 255, 0.2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  font-weight: 800;
  font-size: 0.8rem;
}

@media (max-width: 768px) {
  .badge-promo,
  .badge-oec {
    padding: var(--space-2) var(--space-4);
    margin-bottom: var(--space-4);
    margin-top: var(--space-4);
  }
}

/* ==========================================================================
   FORMULAIRE MODERNE RESPONSIVE CORRIGÉ
   ========================================================================== */

.modern-form-container {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(247, 250, 252, 0.98) 100%);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  box-shadow: 
    0 20px 25px -5px rgba(0, 0, 0, 0.1), 
    0 10px 10px -5px rgba(0, 0, 0, 0.04),
    0 0 0 1px rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.1);
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 500px;
}

/* FORMULAIRE HERO RESPONSIVE */
.hero-right .modern-form-container {
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

@media (max-width: 1024px) {
  .hero-right .modern-form-container {
    max-width: 600px;
  }
}

@media (max-width: 768px) {
  .hero-right .modern-form-container {
    max-width: 100%;
    padding: var(--space-4);
  }
}

.modern-form-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.form-header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.form-title {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 800;
  margin-bottom: var(--space-2);
  font-family: var(--font-secondary);
}

.form-subtitle {
  color: var(--neutral-600);
  font-size: clamp(0.8rem, 1.2vw, 0.9rem);
  margin-bottom: 0;
}

.modern-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: relative;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.modern-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--neutral-900);
  font-size: clamp(0.8rem, 1.2vw, 0.9rem);
}

.form-icon {
  font-size: 1rem;
  opacity: 0.7;
}

.modern-input,
.modern-select,
.modern-textarea {
  width: 100%;
  padding: var(--space-3);
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: clamp(0.85rem, 1.2vw, 0.9rem);
  background: var(--white);
  transition: all var(--transition-base);
  position: relative;
}

@media (max-width: 768px) {
  .modern-input,
  .modern-select,
  .modern-textarea {
    font-size: 16px; /* Évite le zoom sur iOS */
    padding: var(--space-3);
  }
}

.modern-textarea {
  min-height: 80px;
  resize: vertical;
}

.modern-input:focus,
.modern-select:focus,
.modern-textarea:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  transform: translateY(-1px);
}

.modern-input.auto-detected {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.05) 0%, rgba(34, 197, 94, 0.05) 100%);
  border-color: rgba(34, 197, 94, 0.3);
  cursor: not-allowed;
}

.form-hint {
  font-size: clamp(0.7rem, 1vw, 0.8rem);
  color: var(--accent-500);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.modern-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 16px;
  padding-right: var(--space-12);
  appearance: none;
}

.form-submit {
  text-align: center;
  margin-top: var(--space-4);
}

.modern-submit-btn {
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-8);
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  min-width: 200px;
  justify-content: center;
  width: 100%;
}

@media (min-width: 640px) {
  .modern-submit-btn {
    width: auto;
  }
}

.modern-submit-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.modern-submit-btn:hover::before {
  left: 100%;
}

.modern-submit-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2xl);
}

.btn-text {
  font-family: var(--font-secondary);
}

.btn-icon {
  font-size: 1.2rem;
  transition: var(--transition-base);
}

.modern-submit-btn:hover .btn-icon {
  transform: translateX(3px) scale(1.1);
}

.form-guarantee {
  margin-top: var(--space-4);
  color: var(--neutral-500);
  font-size: clamp(0.8rem, 1.2vw, 0.9rem);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: rgba(34, 197, 94, 0.1);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(34, 197, 94, 0.2);
  text-align: center;
}

.guarantee-icon {
  font-size: 1rem;
  color: var(--accent-500);
}

/* ==========================================================================
   STATS SECTION RESPONSIVE
   ========================================================================== */

.stats-section {
  background: var(--gradient-primary);
  padding: var(--space-6) 0;
  color: var(--white);
}

.stats-banner {
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  min-width: 200px;
}

.stat-number {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  font-family: var(--font-secondary);
}

.stat-label {
  font-size: clamp(0.75rem, 1.2vw, 0.85rem);
  opacity: 0.9;
  line-height: 1.3;
  max-width: 200px;
}

.stat-icon {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.3);
  display: none;
}

@media (min-width: 768px) {
  .stat-divider {
    display: block;
  }
  
  .stats-banner {
    gap: var(--space-6);
  }
}

@media (max-width: 640px) {
  .stats-banner {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .stat-item {
    min-width: auto;
    width: 100%;
  }
}

/* ==========================================================================
   SECTIONS GÉNÉRALES RESPONSIVE
   ========================================================================== */

.section {
  padding: var(--space-16) 0;
  background: var(--white);
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-12) 0;
  }
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-8);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

.text-center {
  text-align: center;
}

.mb-4 {
  margin-bottom: var(--space-4);
}

/* ==========================================================================
   GRILLES RESPONSIVE CORRIGÉES
   ========================================================================== */

.grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

.grid-4 {
  grid-template-columns: 1fr;
}

/* Responsive grilles */
@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ==========================================================================
   CARDS RESPONSIVE
   ========================================================================== */

.card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: all var(--transition-base);
  height: 100%;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card h4 {
  color: var(--primary-600);
  margin-bottom: var(--space-3);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 700;
}

.card p {
  color: var(--neutral-500);
  margin-bottom: var(--space-4);
  line-height: 1.6;
  font-size: clamp(0.85rem, 1.2vw, 0.9rem);
}

@media (max-width: 768px) {
  .card {
    padding: var(--space-4);
  }
}

/* ==========================================================================
   BOUTONS RESPONSIVE
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  font-size: clamp(0.85rem, 1.2vw, 0.9rem);
  justify-content: center;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary-600);
  border: 2px solid var(--primary-500);
}

.btn-outline:hover {
  background: var(--btn-primary-bg);
  color: var(--white);
}

@media (max-width: 768px) {
  .btn {
    width: 100%;
    padding: var(--space-4);
    font-size: 16px;
  }
}

/* ==========================================================================
   PRICING CARDS RESPONSIVE
   ========================================================================== */

.pricing-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
  text-align: center;
  position: relative;
  border: 3px solid transparent;
  transition: var(--transition-base);
  height: 100%;
}

.pricing-card:hover {
  border-color: var(--primary-500);
  transform: translateY(-4px);
}

.pricing-card.featured {
  border-color: var(--accent-500);
  transform: scale(1.02);
}

.pricing-card.featured::before {
  content: 'POPULAIRE';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-500);
  color: var(--white);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
}

.price {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 800;
  color: var(--primary-600);
  margin: var(--space-2) 0 var(--space-4) 0;
  text-align: center;
}

.price-unit {
  font-size: clamp(0.8rem, 1.5vw, 1rem);
  color: var(--neutral-500);
  font-weight: 400;
}

@media (max-width: 768px) {
  .pricing-card {
    padding: var(--space-4);
  }
  
  .pricing-card.featured {
    transform: scale(1);
  }
}

/* ==========================================================================
   LISTES AVEC CHECKMARKS
   ========================================================================== */

.check-list {
  list-style: none;
  text-align: left;
  margin: var(--space-4) 0;
  padding: 0;
}

.check-list li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-2);
  color: var(--neutral-500);
  font-size: clamp(0.8rem, 1.2vw, 0.9rem);
  line-height: 1.5;
}

.check-list li::before {
  content: '✅';
  position: absolute;
  left: 0;
  top: 0;
}

/* ==========================================================================
   TESTIMONIALS SECTION RESPONSIVE
   ========================================================================== */

.testimonials-section {
  padding: var(--space-16) 0;
  background: var(--neutral-100);
}

.testimonials-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.testimonials-slider {
  margin-top: var(--space-8);
}

.slider-container {
  overflow: hidden;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  background: var(--white);
}

.testimonials-track {
  display: flex;
  transition: transform 0.5s ease;
}

.testimonial-card {
  min-width: 100%;
  background: var(--white);
  padding: var(--space-8);
  display: none;
  box-sizing: border-box;
}

.testimonial-card.active {
  display: block;
}

.testimonial-content p {
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  line-height: 1.6;
  margin-bottom: var(--space-6);
  font-style: italic;
  color: var(--neutral-900);
}

.testimonial-author {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.author-name {
  font-weight: 600;
  color: var(--primary-600);
  font-size: clamp(0.85rem, 1.2vw, 0.9rem);
}

.rating {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.slider-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}

.slider-btn {
  background: var(--primary-600);
  color: var(--white);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition-base);
}

.slider-btn:hover {
  background: var(--primary-700);
  transform: scale(1.1);
}

.slider-dots {
  display: flex;
  gap: var(--space-2);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--neutral-300);
  cursor: pointer;
  transition: var(--transition-base);
}

.dot.active {
  background: var(--primary-600);
}

@media (max-width: 768px) {
  .testimonial-card {
    padding: var(--space-4);
  }
  
  .testimonial-author {
    justify-content: center;
    text-align: center;
  }
}

/* ==========================================================================
   WHY CHOOSE SECTION RESPONSIVE
   ========================================================================== */

.why-choose-section {
  padding: var(--space-16) 0;
  background: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-base);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.feature-icon {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: var(--space-4);
  display: block;
}

.feature-card h3 {
  margin-bottom: var(--space-3);
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.feature-card p {
  font-size: clamp(0.85rem, 1.2vw, 0.9rem);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .feature-card {
    padding: var(--space-4);
  }
}

/* ==========================================================================
   TABS SYSTEM RESPONSIVE
   ========================================================================== */

.tabs {
  margin-bottom: var(--space-8);
}

.tabs-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  border-bottom: 2px solid var(--gray-lighter);
  padding-bottom: var(--space-4);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-button {
  background: transparent;
  border: none;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-weight: 600;
  color: var(--neutral-500);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  white-space: nowrap;
  font-size: clamp(0.8rem, 1.2vw, 0.9rem);
  min-width: max-content;
}

.tab-button.active {
  color: var(--primary-600);
  background: rgba(59, 130, 246, 0.1);
}

.tab-button:hover {
  color: var(--primary-600);
  background: rgba(59, 130, 246, 0.05);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

@media (max-width: 768px) {
  .tabs-nav {
    justify-content: flex-start;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
  
  .tab-button {
    padding: var(--space-2) var(--space-3);
    font-size: 0.85rem;
  }
}

/* ==========================================================================
   FINAL CTA SECTION RESPONSIVE
   ========================================================================== */

.final-cta-section {
  padding: var(--space-16) 0;
  background: var(--gradient-primary);
  color: var(--white);
  text-align: center;
}

.final-cta-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.final-cta-title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  margin-bottom: var(--space-6);
  color: var(--white);
}

.final-cta-description {
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  line-height: 1.6;
  margin-bottom: var(--space-8);
  opacity: 0.9;
}

.final-cta-btn {
  background: var(--white);
  color: var(--primary-600);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-xl);
  font-weight: 700;
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  box-shadow: var(--shadow-xl);
  transition: var(--transition-base);
}

.final-cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2xl);
}

.cta-arrow {
  font-size: 1.2rem;
  transition: var(--transition-base);
}

.final-cta-btn:hover .cta-arrow {
  transform: translateX(5px);
}

@media (max-width: 768px) {
  .final-cta-btn {
    width: 100%;
    justify-content: center;
    padding: var(--space-4);
  }
}

/* ==========================================================================
   FOOTER MODERNE RESPONSIVE
   ========================================================================== */

.modern-footer {
  background: var(--dark);
  color: var(--gray-light);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr 2fr;
    text-align: left;
  }
}

.footer-brand h4 {
  color: var(--white);
  margin-bottom: var(--space-2);
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.footer-brand p {
  font-size: clamp(0.85rem, 1.2vw, 0.9rem);
}

.footer-bottom {
  border-top: 1px solid var(--dark-light);
  padding-top: var(--space-4);
  text-align: center;
  opacity: 0.7;
  font-size: clamp(0.8rem, 1.2vw, 0.85rem);
}

/* ==========================================================================
   FLOATING CTA RESPONSIVE
   ========================================================================== */

.floating-cta {
  position: fixed;
  bottom: var(--space-4);
  right: var(--space-4);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-base);
}

.floating-cta.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.cta-content {
  background: var(--gradient-primary);
  color: var(--white);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  transition: var(--transition-base);
}

.cta-content:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2xl);
}

.cta-text {
  font-weight: 600;
  font-size: clamp(0.8rem, 1.2vw, 0.875rem);
  white-space: nowrap;
}

@media (max-width: 768px) {
  .floating-cta {
    bottom: var(--space-2);
    right: var(--space-2);
  }
  
  .cta-content {
    padding: var(--space-2) var(--space-3);
  }
  
  .cta-text {
    font-size: 0.8rem;
  }
}

/* ==========================================================================
   ANIMATIONS ET ÉTATS
   ========================================================================== */

.animate-in {
  animation: slideInUp 0.6s ease-out;
}

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

/* États de validation */
.modern-input.error,
.modern-select.error,
.modern-textarea.error {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.modern-input.success,
.modern-select.success,
.modern-textarea.success {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

/* Messages d'erreur */
.error-message {
  color: var(--error);
  font-size: clamp(0.75rem, 1.2vw, 0.85rem);
  margin-top: var(--space-1);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-weight: 500;
}

.error-message::before {
  content: '⚠️';
  font-size: 0.9rem;
}

/* ==========================================================================
   UTILITAIRES RESPONSIVE
   ========================================================================== */

.text-center { text-align: center; }
.text-white { color: var(--white); }
.hidden { display: none; }
.loading { opacity: 0.6; pointer-events: none; }

/* États hover pour écrans tactiles */
@media (hover: hover) {
  .card:hover .feature-icon {
    transform: scale(1.1);
  }
  
  .pricing-card:hover {
    transform: translateY(-4px);
  }
}

/* ==========================================================================
   COMPATIBILITÉ ANCIENS ÉLÉMENTS
   ========================================================================== */

/* Header ancien système */
.header {
  background: var(--white);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  min-height: 70px;
  max-width: 1280px;
  margin: 0 auto;
}

.logo-container {
  display: flex;
  align-items: center;
}

.brand-logo {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }
}

.nav-menu a {
  color: var(--neutral-500);
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  text-decoration: none;
  font-size: clamp(0.85rem, 1.2vw, 0.9rem);
}

.nav-menu a:hover {
  background: var(--neutral-100);
  color: var(--primary-600);
}

.cta-header {
  display: none;
}

@media (min-width: 768px) {
  .cta-header {
    display: inline-block;
  }
}

/* Menu mobile ancien */
.mobile-menu-toggle {
  display: block;
  background: none;
  border: none;
  color: var(--primary-600);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--white);
  box-shadow: var(--shadow-xl);
  padding: var(--space-4);
}

.mobile-menu.active {
  display: block;
}

.mobile-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-menu li {
  margin-bottom: var(--space-2);
}

.mobile-menu a {
  display: block;
  padding: var(--space-3);
  color: var(--neutral-500);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-size: 16px;
}

.mobile-menu a:hover {
  background: var(--neutral-100);
  color: var(--primary-600);
}

/* Hero ancien système */
.hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  text-align: center;
  padding: var(--space-8) 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 var(--space-4);
}

.hero h1 {
  color: var(--white);
  font-size: clamp(1.5rem, 4vw, 3rem);
  margin-bottom: var(--space-4);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  line-height: 1.3;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: var(--space-8);
  opacity: 0.95;
  line-height: 1.4;
  color: var(--white);
}

.hero-cta {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .hero {
    min-height: 50vh;
    padding: var(--space-12) 0;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-cta .btn {
    width: 100%;
    max-width: 280px;
  }
}

/* Contact arguments */
.contact-arguments {
  background: var(--gradient-primary);
  color: var(--white);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-8);
}

.contact-arguments h3 {
  color: var(--white);
  margin-bottom: var(--space-4);
  font-size: clamp(1.125rem, 2vw, 1.25rem);
}

.contact-arguments .check-list li {
  color: var(--white);
}

@media (max-width: 768px) {
  .contact-arguments {
    padding: var(--space-4);
  }
}

/* Logos officiels */
.logos-officiels {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  justify-content: center;
  margin: var(--space-4) 0;
  flex-wrap: wrap;
}

.logo-officiel {
  height: 40px;
  width: auto;
  opacity: 0.8;
  transition: var(--transition-base);
}

.logo-officiel:hover {
  opacity: 1;
}

@media (max-width: 768px) {
  .logo-officiel {
    height: 35px;
  }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
  .modern-header,
  .floating-cta,
  .modern-form-container {
    display: none !important;
  }
  
  .hero-modern {
    background: none !important;
    color: black !important;
  }
  
  .hero-title,
  .hero-subtitle {
    color: black !important;
  }
}