/**
 * landing.css — Charte graphique institutionnelle, sobre et haut de gamme pour Legal Notary.
 * Palette : Bleu Roi #1A3FA0, Bleu Nuit #0F172A, Blanc Pur #FFFFFF, Gris Neutre #F8FAFC, Bordures #E2E8F0.
 * Mobile-First, Accessible WCAG 2.1 AA, Typographie lisible (min 16px).
 */

:root {
  --primary: #1A3FA0;
  --primary-hover: #143282;
  --primary-light: rgba(26, 63, 160, 0.08);
  --primary-border: rgba(26, 63, 160, 0.2);
  --text-main: #0F172A;
  --text-muted: #475569;
  --text-dim: #64748B;
  --bg-page: #FFFFFF;
  --bg-surface: #F8FAFC;
  --bg-card: #FFFFFF;
  --border: #E2E8F0;
  --border-focus: #1A3FA0;
  --accent-gold: #D97706;
  --accent-green: #0D9488;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.08);
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typographie & Titres */
h1, h2, h3, h4 {
  color: var(--text-main);
  line-height: 1.25;
  font-weight: 700;
}

h1 {
  font-family: var(--font-heading);
  font-size: 2.35rem;
  letter-spacing: -0.02em;
}

h2 {
  font-family: var(--font-heading);
  font-size: 1.95rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.25rem;
  font-family: var(--font-body);
  font-weight: 700;
}

p, li, label, input, select, textarea, button {
  font-size: 1rem;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Boutons & CTAs */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.98rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(26, 63, 160, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 63, 160, 0.35);
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--primary);
  border-color: var(--border);
}

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

.btn-whatsapp {
  background-color: #128C7E;
  color: #FFFFFF;
  border-color: #075E54;
}

.btn-whatsapp:hover {
  background-color: #075E54;
  color: #FFFFFF;
}

.btn-discret {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
  font-weight: 500;
}

.btn-discret:hover {
  color: var(--text-main);
  background-color: var(--bg-surface);
}

/* Badges & Étiquettes */
.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-tag.gold {
  background-color: rgba(217, 119, 6, 0.08);
  color: var(--accent-gold);
  border-color: rgba(217, 119, 6, 0.25);
}

/* =========================================================================
   1. HEADER
   ========================================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-brand svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--text-muted);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* =========================================================================
   2. HERO SECTION
   ========================================================================= */
.hero-section {
  padding: 56px 0 64px 0;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

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

.hero-text h1 {
  margin: 16px 0 18px 0;
  color: var(--text-main);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 28px;
}

.hero-ctas {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-reassurance {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}

.hero-reassurance span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-reassurance svg {
  width: 16px;
  height: 16px;
  color: var(--accent-green);
}

/* Visuel Mockup du Tableau de Bord */
.dashboard-preview-card {
  background: #0F172A;
  border: 1px solid #334155;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  color: #F8FAFC;
}

.mock-window-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: #1E293B;
  border-bottom: 1px solid #334155;
  font-size: 0.8rem;
  color: #94A3B8;
}

.mock-dots {
  display: flex;
  gap: 6px;
}

.mock-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #475569;
}

.mock-dot.red { background: #EF4444; }
.mock-dot.yellow { background: #F59E0B; }
.mock-dot.green { background: #10B981; }

.mock-body {
  padding: 20px;
}

.mock-kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.mock-kpi {
  background: #1E293B;
  border: 1px solid #334155;
  padding: 12px;
  border-radius: var(--radius-sm);
}

.mock-kpi-title {
  font-size: 0.75rem;
  color: #94A3B8;
  text-transform: uppercase;
}

.mock-kpi-val {
  font-size: 1.25rem;
  font-weight: 700;
  color: #38BDF8;
  margin-top: 2px;
}

.mock-table-wrap {
  border: 1px solid #334155;
  border-radius: var(--radius-sm);
  background: #1E293B;
  overflow: hidden;
}

.mock-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  text-align: left;
}

.mock-table th {
  padding: 8px 12px;
  background: #0F172A;
  color: #94A3B8;
  font-weight: 600;
  border-bottom: 1px solid #334155;
}

.mock-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(51, 65, 85, 0.6);
  color: #E2E8F0;
}

.mock-status {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
}

.mock-status.alert { background: rgba(239, 68, 68, 0.2); color: #FCA5A5; border: 1px solid rgba(239, 68, 68, 0.4); }
.mock-status.prog { background: rgba(56, 189, 248, 0.2); color: #7DD3FC; border: 1px solid rgba(56, 189, 248, 0.4); }
.mock-status.done { background: rgba(34, 197, 94, 0.2); color: #86EFAC; border: 1px solid rgba(34, 197, 94, 0.4); }

/* =========================================================================
   3. SECTION LE PROBLÈME
   ========================================================================= */
.section {
  padding: 72px 0;
}

.section-alt {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px auto;
}

.section-head h2 {
  margin: 12px 0;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1.08rem;
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.problem-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-left: 4px solid #EF4444;
  padding: 28px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.problem-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(239, 68, 68, 0.1);
  color: #DC2626;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.problem-card h3 {
  margin-bottom: 8px;
  color: var(--text-main);
  font-size: 1.15rem;
}

.problem-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* =========================================================================
   4. SECTION LA SOLUTION
   ========================================================================= */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.feature-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-border);
}

.feature-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border: 1px solid var(--primary-border);
}

.feature-icon-box svg {
  width: 22px;
  height: 22px;
}

.feature-card h3 {
  margin-bottom: 8px;
  color: var(--text-main);
  font-size: 1.15rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* =========================================================================
   5. SECTION COMMENT ÇA MARCHE
   ========================================================================= */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.step-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 16px;
}

.step-card h3 {
  margin-bottom: 8px;
  font-size: 1.18rem;
}

.step-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* =========================================================================
   6. SECTION SÉCURITÉ & SOUVERAINETÉ
   ========================================================================= */
.security-box {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
}

.security-pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 24px;
}

.security-pillar {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.security-pillar svg {
  width: 22px;
  height: 22px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 3px;
}

.security-pillar h4 {
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 4px;
}

.security-pillar p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.legal-badge-notice {
  display: inline-block;
  padding: 2px 6px;
  background: #F1F5F9;
  color: #475569;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 600;
}

/* =========================================================================
   7. PREUVE SOCIALE & 8. TARIFS
   ========================================================================= */
.placeholder-box {
  background: #FFFFFF;
  border: 2px dashed #CBD5E1;
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.92rem;
}

.pricing-card {
  max-width: 580px;
  margin: 0 auto;
  background: #FFFFFF;
  border: 1px solid var(--primary-border);
  border-top: 4px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.pricing-card h3 {
  font-size: 1.45rem;
  margin-bottom: 8px;
}

.pricing-features {
  margin: 24px 0;
  text-align: left;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-main);
}

.pricing-features svg {
  width: 18px;
  height: 18px;
  color: var(--accent-green);
  flex-shrink: 0;
}

/* =========================================================================
   9. SECTION FAQ
   ========================================================================= */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
}

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

.faq-icon {
  transition: transform 0.2s ease;
  font-size: 1.2rem;
  color: var(--text-dim);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  display: none;
  padding: 0 22px 20px 22px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  border-top: 1px solid var(--bg-surface);
}

.faq-item.active .faq-answer {
  display: block;
}

/* =========================================================================
   10. SECTION CTA FINAL & FORMULAIRE DE DÉMO
   ========================================================================= */
.form-card {
  max-width: 680px;
  margin: 0 auto;
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-lg);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #FFFFFF;
  color: var(--text-main);
  font-family: var(--font-body);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.form-checkbox input {
  margin-top: 3px;
}

/* Champ Honeypot invisible pour humains, piège à bots */
.champ-honeypot {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  position: absolute !important;
  left: -9999px !important;
}

.form-alert-success {
  display: none;
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  color: #065F46;
  padding: 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  margin-top: 16px;
}

.form-alert-error {
  display: none;
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
  padding: 14px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  margin-top: 14px;
}

/* =========================================================================
   11. FOOTER
   ========================================================================= */
.site-footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 56px 0 32px 0;
  border-top: 1px solid #1E293B;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-brand h4 {
  color: #FFFFFF;
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-links h5 {
  color: #FFFFFF;
  font-size: 0.95rem;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: #94A3B8;
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #1E293B;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  text-align: center;
  font-size: 0.82rem;
  color: #64748B;
}

/* =========================================================================
   RESPONSIVE (Tablettes & Écrans Larges >= 768px et >= 1024px)
   ========================================================================= */
@media (min-width: 640px) {
  .hero-ctas {
    flex-direction: row;
  }
  .form-grid.two-cols {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 768px) {
  h1 { font-size: 3rem; }
  h2 { font-size: 2.3rem; }
  .nav-links { display: flex; }
  .problem-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(3, 1fr); }
  .security-pillars { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
  .footer-bottom { flex-direction: row; justify-content: space-between; text-align: left; }
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
  }
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}