/* ===========================
   VARIABLES
   =========================== */
:root {
  /* Couleurs */
  --color-primary: #1a365d;
  --color-primary-light: #2c5282;
  --color-accent: #b8860b;
  --color-accent-light: #d4a017;
  --color-bg: #f5f5f0;
  --color-bg-alt: #ffffff;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-border: #e2e2e2;
  --color-success: #38a169;
  --color-error: #c53030;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Layout */
  --container-max: 1200px;
  --header-height: 80px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions */
  --transition: 0.2s ease;
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

ul {
  list-style: none;
}

/* ===========================
   UTILITIES
   =========================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

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

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

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

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

/* ===========================
   TYPOGRAPHY
   =========================== */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
  margin-bottom: var(--spacing-md);
}

.lead {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary-light);
  color: white;
}

.btn-accent {
  background-color: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent-light);
  color: white;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

/* ===========================
   HEADER
   =========================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-bg-alt);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 700;
  font-size: var(--font-size-xl);
  color: var(--color-primary);
}

.logo:hover {
  color: var(--color-primary);
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-accent);
  color: white;
  border-radius: var(--radius-md);
  font-weight: 700;
}

.nav-list {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--color-text);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
}

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

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

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

.header-cta {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

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

/* ===========================
   LANG SWITCHER
   =========================== */
.lang-switcher {
  display: flex;
  gap: var(--spacing-xs);
  margin-left: var(--spacing-lg);
}

.lang-switcher-item {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.lang-switcher-item:hover {
  color: var(--color-primary);
  background-color: var(--color-bg);
}

.lang-switcher-item.active {
  color: var(--color-primary);
  background-color: var(--color-bg);
}

/* ===========================
   MAIN CONTENT
   =========================== */
main {
  margin-top: var(--header-height);
}

/* ===========================
   HERO
   =========================== */
.hero {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  text-align: center;
}

.hero h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-sm);
}

.hero .subtitle {
  font-size: var(--font-size-2xl);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.hero .description {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===========================
   STATS
   =========================== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  padding: var(--spacing-xl) 0;
}

.stat-card {
  background-color: var(--color-bg-alt);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ===========================
   PILLARS (3 COLUMNS)
   =========================== */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.pillar-card {
  background-color: var(--color-bg-alt);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.pillar-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
}

.pillar-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.pillar-tagline {
  color: var(--color-accent);
  font-style: italic;
  margin-bottom: var(--spacing-md);
}

.pillar-card ul {
  text-align: left;
}

.pillar-card li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
}

.pillar-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: bold;
}

/* ===========================
   PROCESS STEPS
   =========================== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step::after {
  content: '→';
  position: absolute;
  right: -20px;
  top: 30px;
  font-size: var(--font-size-xl);
  color: var(--color-accent);
}

.process-step:last-child::after {
  display: none;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background-color: var(--color-accent);
  color: white;
  font-size: var(--font-size-xl);
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: var(--spacing-md);
}

.process-step h4 {
  margin-bottom: var(--spacing-sm);
}

.process-step p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ===========================
   PRICING CARDS
   =========================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  max-width: 1100px;
  margin: 0 auto;
}

.pricing-card {
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.pricing-card .btn {
  margin-top: auto;
}

.pricing-card.featured {
  border: 2px solid var(--color-accent);
}

.pricing-card.featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background-color: var(--color-accent);
}

.pricing-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-md);
}

.pricing-price {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-primary);
}

.pricing-price span {
  font-size: var(--font-size-lg);
  font-weight: 400;
  color: var(--color-text-light);
}

.pricing-features {
  margin: var(--spacing-xl) 0;
}

.pricing-features li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: bold;
}

.pricing-ideal {
  font-style: italic;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

/* ===========================
   COMPARISON TABLE
   =========================== */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background-color: var(--color-primary);
  color: white;
  font-weight: 600;
}

.comparison-table th:last-child {
  background-color: var(--color-accent);
}

.comparison-table td:first-child {
  text-align: left;
  font-weight: 500;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover td {
  background-color: var(--color-bg);
}

.check {
  color: var(--color-success);
  font-size: var(--font-size-xl);
}

.cross {
  color: var(--color-error);
  font-size: var(--font-size-xl);
}

.partial {
  color: var(--color-accent);
  font-size: var(--font-size-lg);
}

/* ===========================
   ICEBERG (RISKS)
   =========================== */
.iceberg-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.iceberg-visible,
.iceberg-hidden {
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
}

.iceberg-visible {
  background-color: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
}

.iceberg-hidden {
  background-color: var(--color-primary);
  color: white;
}

.iceberg-hidden h2,
.iceberg-hidden h3,
.iceberg-hidden h4 {
  color: white;
}

.iceberg-hidden li {
  color: rgba(255, 255, 255, 0.9);
}

/* ===========================
   ACCORDION
   =========================== */
.accordion {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-bg-alt);
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary);
  text-align: left;
  transition: background-color 0.2s;
}

.accordion-header:hover {
  background-color: var(--color-border);
}

.accordion-header::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  transition: transform 0.2s;
}

.accordion-item.active .accordion-header::after {
  content: '−';
}

.accordion-content {
  display: none;
  padding: var(--spacing-lg);
  background-color: white;
}

.accordion-item.active .accordion-content {
  display: block;
}

.accordion-content iframe {
  width: 100%;
  min-height: 800px;
  border: none;
  border-radius: 8px;
}

/* ===========================
   QUOTE BOX
   =========================== */
.quote-box {
  background-color: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
  padding: var(--spacing-xl);
  margin: var(--spacing-xl) 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.quote-box p {
  font-style: italic;
  font-size: var(--font-size-lg);
  color: var(--color-text);
  margin: 0;
}

/* ===========================
   CTA SECTION
   =========================== */
.cta-section {
  background-color: var(--color-primary);
  color: white;
  text-align: center;
  padding: var(--spacing-3xl) 0;
}

.cta-section h2 {
  color: white;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-section .btn-accent {
  background-color: var(--color-accent);
}

.cta-section .btn-outline {
  color: white;
  border-color: white;
}

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

/* ===========================
   CONTACT FORM
   =========================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.contact-option {
  background-color: var(--color-bg-alt);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.contact-option h3 {
  margin-bottom: var(--spacing-md);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

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

.footer-brand .logo {
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer-brand .logo-icon {
  background-color: var(--color-accent);
}

.footer-tagline {
  color: rgba(255, 255, 255, 0.7);
}

.footer-nav h4,
.footer-contact h4 {
  color: white;
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-md);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.7);
  display: block;
  padding: var(--spacing-xs) 0;
}

.footer-nav a:hover {
  color: white;
}

.footer-contact p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-xs);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
  font-size: var(--font-size-sm);
}

.footer-legal {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

.footer-legal a:hover {
  color: white;
}

/* ===========================
   PAGE HEADER
   =========================== */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: white;
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.page-header h1 {
  color: white;
  margin-bottom: var(--spacing-sm);
}

.page-header .subtitle {
  color: var(--color-accent);
  font-size: var(--font-size-xl);
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1024px) {
  .header-cta {
    display: none;
  }

  .nav-list {
    gap: var(--spacing-md);
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-step::after {
    display: none;
  }

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

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.25rem;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-bg-alt);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
  }

  .nav.active {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .nav-link {
    display: block;
    padding: var(--spacing-sm);
  }

  .nav-toggle {
    display: flex;
  }

  .lang-switcher {
    margin-left: auto;
    margin-right: var(--spacing-md);
  }

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

  .process-steps {
    grid-template-columns: 1fr;
  }

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

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

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

  .comparison-table {
    font-size: var(--font-size-sm);
  }

  .comparison-table th,
  .comparison-table td {
    padding: var(--spacing-sm);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .footer-legal {
    justify-content: center;
  }
}