/* ============================================================
   SIIR — Feuille de style principale
   Palette : Bordeaux #8F1D2D | Vert #1F9B6A | Menthe #DFF1E6
   ============================================================ */

/* Reset & base */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: #1a2e25;
  background: #ffffff;
}

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

a { text-decoration: none; }

h1, h2, h3, h4 { line-height: 1.15; font-weight: 800; margin-top: 0; }

p { margin-top: 0; }

/* ============================================================
   Layout helpers
   ============================================================ */
.siir-container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.siir-narrow {
  max-width: 860px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

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

.siir-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.siir-align-center { align-items: center; }

/* ============================================================
   Boutons
   ============================================================ */
.siir-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 28px;
  border-radius: 100px;
  border: none;
  background: #1F9B6A;
  color: #ffffff;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
  white-space: nowrap;
}

.siir-btn:hover {
  background: #177a53;
  transform: translateY(-1px);
  color: #ffffff;
}

.siir-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.siir-btn-sm { padding: 10px 20px; font-size: 14px; }

.siir-btn-outline {
  background: transparent;
  border: 2px solid #1F9B6A;
  color: #1F9B6A;
}

.siir-btn-outline:hover {
  background: #DFF1E6;
  color: #1F9B6A;
}

.siir-btn-light {
  background: #ffffff;
  color: #8F1D2D;
}

.siir-btn-light:hover {
  background: #f5f5f5;
  color: #8F1D2D;
}

.siir-btn-nav { background: #8F1D2D; }
.siir-btn-nav:hover { background: #6d1522; }

/* ============================================================
   Badges & kickers
   ============================================================ */
.siir-badge,
.siir-kicker {
  display: inline-block;
  padding: 7px 16px;
  border-radius: 100px;
  background: #DFF1E6;
  color: #1F9B6A;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.siir-kicker-light {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.siir-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid #e8f0eb;
}

.siir-topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
  gap: 16px;
  flex-wrap: wrap;
}

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

.siir-logo-img {
  height: 42px;
  width: auto;
}

.siir-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.siir-nav a {
  color: #1a2e25;
  font-size: 14px;
  font-weight: 600;
  transition: color 0.2s;
}

.siir-nav a:hover { color: #1F9B6A; }

.siir-burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 22px;
  color: #1a2e25;
  padding: 4px;
}

/* ============================================================
   HERO
   ============================================================ */
.siir-hero {
  padding: 70px 0 50px;
  background: linear-gradient(160deg, #f8fcfa 0%, #ffffff 60%);
}

.siir-hero-copy h1 {
  font-size: 52px;
  color: #8F1D2D;
  margin-top: 14px;
  margin-bottom: 16px;
}

.siir-lead {
  font-size: 20px;
  font-weight: 700;
  color: #1a2e25;
  margin-bottom: 12px;
}

.siir-checklist {
  list-style: none;
  padding: 0;
  margin: 20px 0 24px;
  display: grid;
  gap: 10px;
}

.siir-checklist li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: #ffffff;
  border: 1px solid #d9ece2;
  border-radius: 14px;
  font-weight: 600;
}

.siir-checklist li .fa-check-circle { color: #1F9B6A; font-size: 18px; }

.siir-hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.siir-urgent {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #8F1D2D;
  font-weight: 700;
  font-size: 14px;
}

.siir-hero-media img {
  border-radius: 24px;
}

/* ============================================================
   SECTIONS
   ============================================================ */
.siir-section { padding: 90px 0; }

.siir-section-soft { background: #f8fcfa; }

.siir-section-heading {
  max-width: 760px;
  margin: 0 auto 40px;
  text-align: center;
}

.siir-section-heading h2 {
  font-size: 40px;
  color: #8F1D2D;
  margin: 10px 0 12px;
}

.siir-section-heading p { color: #4a6357; font-size: 17px; }

.siir-section-heading-light h2,
.siir-section-heading-light p { color: #ffffff; }

/* ============================================================
   CARDS
   ============================================================ */
.siir-feature-grid,
.siir-conditions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.siir-card {
  background: #ffffff;
  border: 1px solid #d9ece2;
  border-radius: 20px;
  padding: 22px;
  transition: transform 0.2s ease;
}

.siir-card:hover { transform: translateY(-3px); }

.siir-card-icon {
  font-size: 28px;
  margin-bottom: 10px;
}

.siir-card h3 {
  margin-bottom: 8px;
  color: #8F1D2D;
  font-size: 17px;
}

.siir-card p { margin: 0; color: #4a6357; font-size: 14px; }

.siir-side-image img { border-radius: 24px; }

/* ============================================================
   PRICING
   ============================================================ */
.siir-pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
}

.siir-price-card {
  position: relative;
  background: #ffffff;
  border: 1px solid #d9ece2;
  border-radius: 24px;
  padding: 32px 24px;
  text-align: center;
  transition: transform 0.2s ease;
}

.siir-price-card:hover { transform: translateY(-4px); }

.siir-price-card-featured {
  border: 2px solid #1F9B6A;
  transform: translateY(-6px);
}

.siir-price-card-featured:hover { transform: translateY(-10px); }

.siir-price-icon { font-size: 32px; margin-bottom: 10px; }

.siir-price-card h3 { color: #8F1D2D; margin-bottom: 12px; }

.siir-price {
  font-size: 42px;
  font-weight: 900;
  color: #1F9B6A;
  margin-bottom: 12px;
}

.siir-price span {
  font-size: 18px;
  font-weight: 600;
  color: #4a6357;
}

.siir-price-card p { color: #4a6357; margin-bottom: 20px; font-size: 14px; }

.siir-popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: #8F1D2D;
  color: #ffffff;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.siir-highlight-box {
  margin-top: 32px;
  padding: 24px 28px;
  background: #DFF1E6;
  border-radius: 20px;
  text-align: center;
}

.siir-highlight-box p { margin: 6px 0; font-size: 17px; }

/* ============================================================
   EARLY ACCESS
   ============================================================ */
.siir-early {
  background: linear-gradient(135deg, #8F1D2D, #a82235);
  color: #ffffff;
}

.siir-early-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin: 36px 0 20px;
}

.siir-early-item {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 18px;
  padding: 22px 16px;
  text-align: center;
  font-weight: 700;
  font-size: 15px;
}

.siir-early-icon { font-size: 30px; margin-bottom: 10px; }

.siir-early-note {
  text-align: center;
  font-weight: 700;
  margin-bottom: 24px;
}

/* ============================================================
   FORMULAIRE
   ============================================================ */

/* Indicateur d'étapes */
.siir-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 36px;
  flex-wrap: wrap;
  gap: 8px;
}

.siir-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0.4;
  transition: opacity 0.3s;
  min-width: 80px;
}

.siir-step.active { opacity: 1; }

.siir-step.done { opacity: 0.75; }

.siir-step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #d9ece2;
  color: #4a6357;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 15px;
}

.siir-step.active .siir-step-num {
  background: #1F9B6A;
  color: #ffffff;
}

.siir-step.done .siir-step-num {
  background: #8F1D2D;
  color: #ffffff;
}

.siir-step span {
  font-size: 12px;
  font-weight: 600;
  color: #4a6357;
  text-align: center;
}

.siir-step.active span { color: #1F9B6A; }

/* Étapes du formulaire */
.siir-form-step { display: none; }
.siir-form-step.active { display: block; }

.siir-form-wrap {
  max-width: 940px;
  margin: 0 auto;
  background: #ffffff;
  border: 1px solid #d9ece2;
  border-radius: 28px;
  padding: 36px;
}

.siir-form-section { margin-bottom: 28px; }

.siir-form-section h3 {
  margin-bottom: 18px;
  color: #8F1D2D;
  font-size: 18px;
}

.siir-form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.siir-field label {
  display: block;
  margin-bottom: 8px;
  font-weight: 700;
  font-size: 14px;
  color: #1a2e25;
}

.siir-field input,
.siir-field select,
.siir-field textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid #d9ece2;
  border-radius: 12px;
  font-family: inherit;
  font-size: 15px;
  color: #1a2e25;
  background: #ffffff;
  transition: border-color 0.2s ease;
  appearance: auto;
}

.siir-field input:focus,
.siir-field select:focus,
.siir-field textarea:focus {
  outline: none;
  border-color: #1F9B6A;
  box-shadow: 0 0 0 3px rgba(31, 155, 106, 0.12);
}

.siir-field textarea { resize: vertical; min-height: 110px; }

/* Champ en erreur */
.siir-input-error {
  border-color: #E64B52 !important;
  box-shadow: 0 0 0 3px rgba(230, 75, 82, 0.12) !important;
}

.siir-input-error-plans .siir-plan-label {
  border-color: #E64B52 !important;
}

/* Plans tarifaires */
.siir-plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.siir-plan-option { cursor: pointer; }

.siir-plan-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0;
  height: 0;
}

.siir-plan-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px 16px;
  border: 2px solid #d9ece2;
  border-radius: 18px;
  text-align: center;
  background: #ffffff;
  transition: all 0.2s ease;
  cursor: pointer;
  position: relative;
}

.siir-plan-label strong { font-size: 16px; color: #1a2e25; }

.siir-plan-label em {
  font-style: normal;
  font-size: 22px;
  font-weight: 900;
  color: #1F9B6A;
}

.siir-plan-option.selected .siir-plan-label,
.siir-plan-option input:checked + .siir-plan-label {
  border-color: #1F9B6A;
  background: #f0faf5;
}

.siir-plan-popular {
  border-color: #1F9B6A !important;
}

.siir-plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: #8F1D2D;
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 100px;
  white-space: nowrap;
}

/* Case à cocher */
.siir-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
}

.siir-checkbox input[type="checkbox"] {
  width: 20px;
  height: 20px;
  min-width: 20px;
  accent-color: #1F9B6A;
  margin-top: 2px;
  cursor: pointer;
}

/* Navigation formulaire */
.siir-form-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid #e8f0eb;
}

.siir-form-footer { margin-top: 8px; }

.siir-form-note {
  color: #4a6357;
  font-size: 13px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Alertes */
.siir-alert {
  max-width: 940px;
  margin: 0 auto 24px;
  padding: 16px 20px;
  border-radius: 16px;
  font-weight: 700;
  font-size: 15px;
}

.siir-alert-success {
  background: #e8f9f0;
  color: #0f6b43;
  border: 1px solid #b5e5cb;
}

.siir-alert-error {
  background: #fff2f2;
  color: #932533;
  border: 1px solid #f3c7cd;
}

/* Note de configuration développeur */
.siir-config-notice {
  max-width: 940px;
  margin: 20px auto 0;
  padding: 14px 18px;
  background: #fff8e1;
  border: 1px solid #ffe082;
  border-radius: 14px;
  font-size: 13px;
  color: #5d4037;
}

.siir-config-notice p {
  margin: 0;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  flex-wrap: wrap;
}

.siir-config-notice code {
  background: rgba(0,0,0,0.08);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
}

.siir-config-notice button {
  background: none;
  border: none;
  cursor: pointer;
  color: #5d4037;
  font-size: 14px;
  margin-left: auto;
  padding: 0 4px;
}

/* ============================================================
   STATS
   ============================================================ */
.siir-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.siir-stat {
  background: #ffffff;
  border: 1px solid #d9ece2;
  border-radius: 22px;
  padding: 28px;
  text-align: center;
}

.siir-stat strong {
  display: block;
  font-size: 38px;
  font-weight: 900;
  color: #8F1D2D;
  margin-bottom: 8px;
}

.siir-stat span { color: #4a6357; font-weight: 600; }

/* ============================================================
   FAQ
   ============================================================ */
.siir-faq { display: grid; gap: 12px; }

.siir-faq-item {
  background: #ffffff;
  border: 1px solid #d9ece2;
  border-radius: 18px;
  overflow: hidden;
}

.siir-faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border: none;
  background: #ffffff;
  text-align: left;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  color: #1a2e25;
  cursor: pointer;
  gap: 12px;
}

.siir-faq-question .fa-chevron-down {
  transition: transform 0.3s ease;
  color: #1F9B6A;
  flex-shrink: 0;
}

.siir-faq-item.is-open .siir-faq-question .fa-chevron-down {
  transform: rotate(180deg);
}

.siir-faq-answer {
  display: none;
  padding: 0 22px 18px;
  color: #4a6357;
  line-height: 1.7;
}

.siir-faq-item.is-open .siir-faq-answer { display: block; }

/* ============================================================
   CTA FINAL
   ============================================================ */
.siir-final-cta {
  padding: 90px 0;
  background: linear-gradient(135deg, #1F9B6A, #178a5c);
  color: #ffffff;
}

.siir-final-cta h2 {
  color: #ffffff;
  font-size: 46px;
  margin: 12px 0 16px;
}

.siir-final-cta p { color: rgba(255,255,255,0.9); font-size: 18px; margin-bottom: 28px; }

.siir-final-note {
  color: rgba(255,255,255,0.85) !important;
  font-size: 14px !important;
  margin-top: 18px !important;
  margin-bottom: 0 !important;
}

/* ============================================================
   FOOTER
   ============================================================ */
.siir-footer {
  background: #0d1e16;
  color: rgba(255,255,255,0.75);
  padding: 48px 0 0;
}

.siir-footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.siir-footer-logo img { height: 40px; margin-bottom: 12px; }

.siir-footer-logo p { font-size: 14px; color: rgba(255,255,255,0.55); }

.siir-footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.siir-footer-links a {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  font-weight: 600;
  transition: color 0.2s;
}

.siir-footer-links a:hover { color: #1F9B6A; }

.siir-footer-contact p {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  margin: 0;
}

.siir-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 16px 20px;
  text-align: center;
}

.siir-footer-bottom p {
  margin: 0;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ============================================================
   RESPONSIVE — Tablette (max 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .siir-grid-2 { grid-template-columns: 1fr; }

  .siir-hero-copy h1 { font-size: 40px; }

  .siir-hero-media { order: -1; }

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

  .siir-price-card-featured { transform: none; }

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

  .siir-stats-grid { grid-template-columns: repeat(3, 1fr); }

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

  .siir-footer-logo { grid-column: 1 / -1; }
}

/* ============================================================
   RESPONSIVE — Mobile (max 768px)
   ============================================================ */
@media (max-width: 768px) {
  .siir-section { padding: 60px 0; }

  .siir-hero { padding: 40px 0 36px; }

  .siir-hero-copy h1 { font-size: 30px; }

  .siir-lead { font-size: 17px; }

  .siir-section-heading h2 { font-size: 28px; }

  .siir-final-cta h2 { font-size: 30px; }

  /* Navbar */
  .siir-burger { display: flex; }

  .siir-btn-nav { display: none; }

  .siir-nav {
    display: none;
    width: 100%;
    order: 3;
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0;
    border-top: 1px solid #e8f0eb;
    gap: 14px;
  }

  .siir-nav.open { display: flex; }

  /* Formulaire */
  .siir-form-wrap { padding: 22px 18px; }

  .siir-form-grid { grid-template-columns: 1fr; }

  .siir-plans { grid-template-columns: 1fr; }

  .siir-form-nav {
    flex-direction: column-reverse;
    gap: 12px;
  }

  .siir-form-nav .siir-btn { width: 100%; }

  /* Grilles */
  .siir-feature-grid,
  .siir-conditions-grid,
  .siir-pricing-grid,
  .siir-early-grid,
  .siir-stats-grid { grid-template-columns: 1fr; }

  /* Hero CTA */
  .siir-hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .siir-hero-cta .siir-btn { width: 100%; }

  /* Footer */
  .siir-footer-inner { grid-template-columns: 1fr; }

  .siir-footer-logo { grid-column: auto; }

  /* Steps */
  .siir-steps { gap: 4px; }
  .siir-step { min-width: 60px; }
  .siir-step span { font-size: 10px; }
}