/* ═══════════════════════════════════════════════════════════════════════════
   RGAAudit.com — Design System
   Positionnement : institutionnel, sobre, premium
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Reset & Base ──────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Couleurs principales */
  --c-navy:        #0f172a;
  --c-navy-light:  #1e293b;
  --c-blue-800:    #1e40af;
  --c-blue-600:    #2563eb;
  --c-blue-500:    #3b82f6;
  --c-blue-100:    #dbeafe;
  --c-blue-50:     #eff6ff;

  /* Neutres */
  --c-white:       #ffffff;
  --c-slate-50:    #f8fafc;
  --c-slate-100:   #f1f5f9;
  --c-slate-200:   #e2e8f0;
  --c-slate-300:   #cbd5e1;
  --c-slate-400:   #94a3b8;
  --c-slate-500:   #64748b;
  --c-slate-600:   #475569;
  --c-slate-700:   #334155;
  --c-slate-800:   #1e293b;

  /* Sémantiques */
  --c-success:     #059669;
  --c-success-bg:  #ecfdf5;
  --c-warning:     #d97706;
  --c-warning-bg:  #fffbeb;
  --c-error:       #dc2626;
  --c-error-bg:    #fef2f2;

  /* Typographie */
  --font-sans:     'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', monospace;

  /* Espacements */
  --sp-xs:   4px;
  --sp-sm:   8px;
  --sp-md:   16px;
  --sp-lg:   24px;
  --sp-xl:   32px;
  --sp-2xl:  48px;
  --sp-3xl:  64px;
  --sp-4xl:  96px;
  --sp-5xl:  128px;

  /* Layout */
  --max-w:   1200px;
  --max-w-narrow: 800px;

  /* Ombres */
  --shadow-sm:   0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:   0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg:   0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
  --shadow-xl:   0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);

  /* Rayons */
  --r-sm:    6px;
  --r-md:    10px;
  --r-lg:    16px;
  --r-xl:    24px;
  --r-full:  9999px;

  /* Transitions */
  --tr-fast:    150ms ease;
  --tr-normal:  250ms ease;
  --tr-slow:    400ms ease;
}

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-slate-700);
  background: var(--c-white);
}

/* ─── Accessibilité : Skip link ─────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--sp-md);
  padding: var(--sp-sm) var(--sp-md);
  background: var(--c-blue-800);
  color: var(--c-white);
  border-radius: var(--r-sm);
  z-index: 10000;
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--sp-md);
}

/* ─── Focus visible (RGAA) ──────────────────────────────────────────────── */
:focus-visible {
  outline: 3px solid var(--c-blue-500);
  outline-offset: 2px;
}

/* ─── Typographie ───────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-navy);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }

p {
  max-width: 68ch;
}

a {
  color: var(--c-blue-600);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--tr-fast);
}

a:hover {
  color: var(--c-blue-800);
}

/* ─── Layout ────────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}

.section {
  padding: var(--sp-4xl) 0;
}

.section--dark {
  background: var(--c-navy);
  color: var(--c-slate-300);
}

.section--dark h2,
.section--dark h3 {
  color: var(--c-white);
}

.section--light {
  background: var(--c-slate-50);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--sp-3xl);
}

.section-header p {
  margin: var(--sp-md) auto 0;
  color: var(--c-slate-500);
  font-size: 1.125rem;
}

.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-blue-600);
  margin-bottom: var(--sp-sm);
}

/* ─── Boutons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  padding: 14px 28px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  border: 2px solid transparent;
  border-radius: var(--r-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--tr-normal);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--c-blue-800);
  color: var(--c-white);
  border-color: var(--c-blue-800);
}

.btn--primary:hover {
  background: var(--c-blue-600);
  border-color: var(--c-blue-600);
  color: var(--c-white);
  box-shadow: var(--shadow-lg);
}

.btn--secondary {
  background: var(--c-white);
  color: var(--c-navy);
  border-color: var(--c-slate-200);
}

.btn--secondary:hover {
  border-color: var(--c-blue-500);
  color: var(--c-blue-800);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  background: transparent;
  color: var(--c-blue-600);
  border-color: transparent;
  padding: 10px 16px;
}

.btn--ghost:hover {
  background: var(--c-blue-50);
}

.btn--large {
  padding: 18px 36px;
  font-size: 1.0625rem;
  border-radius: var(--r-md);
}

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

.btn--white:hover {
  background: var(--c-blue-50);
  border-color: var(--c-blue-50);
  color: var(--c-blue-800);
}

/* ─── Navigation ────────────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-slate-100);
  transition: box-shadow var(--tr-normal);
}

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

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  text-decoration: none;
  color: var(--c-navy);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.nav__logo svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.nav__logo .dot-com {
  color: var(--c-blue-600);
  font-weight: 600;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-xl);
  list-style: none;
}

.nav__links a {
  color: var(--c-slate-600);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--tr-fast);
}

.nav__links a:hover {
  color: var(--c-navy);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--c-slate-100);
  border-radius: var(--r-full);
  padding: 3px;
}

.lang-switch a {
  padding: 5px 10px;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--r-full);
  text-decoration: none;
  color: var(--c-slate-500);
  transition: all var(--tr-fast);
}

.lang-switch a.active {
  background: var(--c-white);
  color: var(--c-navy);
  box-shadow: var(--shadow-sm);
}

.lang-switch a:hover:not(.active) {
  color: var(--c-navy);
}

/* Menu mobile */
.nav__burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-sm);
}

.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-navy);
  margin: 5px 0;
  border-radius: 2px;
  transition: all var(--tr-fast);
}

/* ─── Hero ──────────────────────────────────────────────────────────────── */
.hero {
  padding: var(--sp-4xl) 0 var(--sp-5xl);
  background: linear-gradient(180deg, var(--c-white) 0%, var(--c-slate-50) 100%);
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3xl);
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 6px 16px;
  background: var(--c-success-bg);
  border: 1px solid rgba(5,150,105,0.2);
  border-radius: var(--r-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--c-success);
  margin-bottom: var(--sp-lg);
}

.hero h1 {
  margin-bottom: var(--sp-lg);
}

.hero h1 .highlight {
  color: var(--c-blue-600);
}

.hero__subtitle {
  font-size: 1.1875rem;
  color: var(--c-slate-500);
  line-height: 1.7;
  margin-bottom: var(--sp-xl);
  max-width: 520px;
}

.hero__actions {
  display: flex;
  gap: var(--sp-md);
  flex-wrap: wrap;
}

.hero__visual {
  position: relative;
}

.hero__screenshot {
  width: 100%;
  max-width: 560px;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--c-slate-200);
  background: var(--c-slate-100);
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-slate-400);
  font-size: 0.875rem;
}

/* ─── Trust Bar ─────────────────────────────────────────────────────────── */
.trust-bar {
  padding: var(--sp-xl) 0;
  border-bottom: 1px solid var(--c-slate-100);
}

.trust-bar__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3xl);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-slate-600);
}

.trust-item svg {
  width: 20px;
  height: 20px;
  color: var(--c-blue-600);
  flex-shrink: 0;
}

/* ─── Features Grid ─────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-xl);
}

.feature-card {
  padding: var(--sp-xl);
  background: var(--c-white);
  border: 1px solid var(--c-slate-200);
  border-radius: var(--r-lg);
  transition: all var(--tr-normal);
}

.feature-card:hover {
  border-color: var(--c-blue-200, #bfdbfe);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  background: var(--c-blue-50);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-md);
  color: var(--c-blue-600);
}

.feature-card h3 {
  margin-bottom: var(--sp-sm);
  font-size: 1.125rem;
}

.feature-card p {
  color: var(--c-slate-500);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ─── Steps (Comment ça marche) ─────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-2xl);
  counter-reset: step;
}

.step {
  text-align: center;
  counter-increment: step;
}

.step__number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--c-blue-800);
  color: var(--c-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: var(--sp-md);
}

.step h3 {
  margin-bottom: var(--sp-sm);
}

.step p {
  color: var(--c-slate-500);
  font-size: 0.9375rem;
  margin: 0 auto;
}

/* ─── Pricing ───────────────────────────────────────────────────────────── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-xl);
  align-items: start;
}

.pricing-card {
  background: var(--c-white);
  border: 2px solid var(--c-slate-200);
  border-radius: var(--r-xl);
  padding: var(--sp-xl) var(--sp-xl) var(--sp-2xl);
  position: relative;
  transition: all var(--tr-normal);
}

.pricing-card:hover {
  box-shadow: var(--shadow-xl);
}

.pricing-card--featured {
  border-color: var(--c-blue-600);
  box-shadow: var(--shadow-lg);
}

.pricing-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-blue-800);
  color: var(--c-white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: var(--r-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.pricing-card__name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-navy);
  margin-bottom: var(--sp-xs);
}

.pricing-card__desc {
  font-size: 0.875rem;
  color: var(--c-slate-500);
  margin-bottom: var(--sp-lg);
  min-height: 40px;
}

.pricing-card__price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--c-navy);
  line-height: 1;
  margin-bottom: var(--sp-xs);
}

.pricing-card__price .currency {
  font-size: 1.5rem;
  vertical-align: super;
}

.pricing-card__period {
  font-size: 0.875rem;
  color: var(--c-slate-500);
  margin-bottom: var(--sp-lg);
}

.pricing-card__features {
  list-style: none;
  margin-bottom: var(--sp-xl);
}

.pricing-card__features li {
  padding: 6px 0;
  font-size: 0.9375rem;
  color: var(--c-slate-600);
  display: flex;
  align-items: flex-start;
  gap: var(--sp-sm);
}

.pricing-card__features li::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23059669'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z'/%3E%3C/svg%3E") no-repeat center;
  background-size: 16px 16px;
}

.pricing-card__features li.excluded {
  color: var(--c-slate-400);
  text-decoration: line-through;
}

.pricing-card__features li.excluded::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2394a3b8'%3E%3Cpath fill-rule='evenodd' d='M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z'/%3E%3C/svg%3E");
}

.pricing-card .btn {
  width: 100%;
}

/* ─── FAQ ───────────────────────────────────────────────────────────────── */
.faq-list {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--c-slate-200);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-lg) 0;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--c-navy);
  list-style: none;
  transition: color var(--tr-fast);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--c-slate-400);
  flex-shrink: 0;
  margin-left: var(--sp-md);
  transition: transform var(--tr-fast);
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item summary:hover {
  color: var(--c-blue-600);
}

.faq-item__answer {
  padding: 0 0 var(--sp-lg);
  color: var(--c-slate-500);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ─── CTA final ─────────────────────────────────────────────────────────── */
.cta-section {
  text-align: center;
  padding: var(--sp-5xl) 0;
}

.cta-section h2 {
  color: var(--c-white);
  margin-bottom: var(--sp-md);
}

.cta-section p {
  color: var(--c-slate-300);
  font-size: 1.125rem;
  margin: 0 auto var(--sp-xl);
}

.cta-section .btn-group {
  display: flex;
  gap: var(--sp-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── Footer ────────────────────────────────────────────────────────────── */
.footer {
  background: var(--c-navy);
  color: var(--c-slate-400);
  padding: var(--sp-3xl) 0 var(--sp-xl);
}

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

.footer__brand p {
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 320px;
  margin-top: var(--sp-md);
}

.footer h4 {
  color: var(--c-white);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--sp-md);
}

.footer ul {
  list-style: none;
}

.footer ul li {
  margin-bottom: var(--sp-sm);
}

.footer ul a {
  color: var(--c-slate-400);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color var(--tr-fast);
}

.footer ul a:hover {
  color: var(--c-white);
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--sp-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
}

/* ─── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__visual {
    display: none;
  }

  .features-grid,
  .steps,
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
  }

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

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__burger {
    display: block;
  }

  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--c-white);
    border-bottom: 1px solid var(--c-slate-200);
    padding: var(--sp-lg);
    box-shadow: var(--shadow-lg);
  }

  .trust-bar__inner {
    gap: var(--sp-lg);
  }

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

  .hero {
    padding: var(--sp-2xl) 0 var(--sp-3xl);
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--sp-xl);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--sp-sm);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn--large {
    padding: 16px 24px;
  }
}

/* ─── Pages légales ─────────────────────────────────────────────────────── */
.legal-content h2 {
  margin-top: var(--sp-2xl);
  margin-bottom: var(--sp-md);
}

.legal-content h2:first-of-type {
  margin-top: 0;
}

.legal-content ul {
  margin: var(--sp-md) 0;
  padding-left: var(--sp-xl);
}

.legal-content li {
  margin-bottom: var(--sp-sm);
}

/* ─── Utilitaires ───────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}