/* ===================================================
   SENTINELLE CYBER — style.css
   Inspired by ANSSI / cyber.gouv.fr institutional design
   =================================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,400&display=swap');

/* --- CSS Variables --- */
:root {
  --bleu-france: #000091;
  --bleu-france-dark: #00006D;
  --rouge-france: #E1000F;
  --blanc: #FFFFFF;
  --noir: #1E1E1E;
  --gris-clair: #F6F6F6;
  --gris-bordure: #E0E0E0;
  --gris-texte: #666666;
  --font-main: 'Source Sans 3', 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;
  --header-height: 100px;
}

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

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

body {
  font-family: var(--font-main);
  font-size: 17px;
  line-height: 1.65;
  color: var(--noir);
  background-color: var(--blanc);
}

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

a {
  color: var(--bleu-france);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--bleu-france-dark);
  text-decoration: underline;
}

/* --- Utility --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--bleu-france);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  padding-bottom: 16px;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--rouge-france);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--gris-texte);
  margin-bottom: 48px;
  max-width: 600px;
}

/* ===========================
   HEADER
   =========================== */

.site-header {
  background: var(--blanc);
  border-bottom: 3px solid var(--bleu-france);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--bleu-france);
}

.header-brand:hover {
  text-decoration: none;
}

.header-brand svg {
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--bleu-france);
  text-transform: uppercase;
}

.header-brand .brand-name::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: var(--rouge-france);
  margin-top: 2px;
}

.brand-tagline {
  font-size: 0.78rem;
  color: var(--gris-texte);
  font-weight: 400;
  letter-spacing: 0;
  margin-top: 2px;
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--noir);
  padding: 8px 16px;
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--bleu-france);
  border-bottom-color: var(--bleu-france);
  text-decoration: none;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--bleu-france);
  margin: 6px 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ===========================
   HERO
   =========================== */

.hero {
  background: var(--bleu-france);
  position: relative;
  overflow: hidden;
  padding: 80px 0 88px;
}

/* Subtle network pattern */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.04) 0%, transparent 40%),
    radial-gradient(circle at 60% 80%, rgba(255,255,255,0.02) 0%, transparent 45%);
  pointer-events: none;
}

/* CSS-only geometric pattern */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 720px;
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--blanc);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 600px;
}

/* Newsletter form */
.newsletter-form {
  display: flex;
  gap: 0;
  max-width: 520px;
}

.newsletter-form input[type="email"] {
  flex: 1;
  padding: 14px 20px;
  font-size: 1rem;
  font-family: var(--font-main);
  border: 2px solid rgba(255,255,255,0.3);
  border-right: none;
  background: rgba(255,255,255,0.1);
  color: var(--blanc);
  outline: none;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.newsletter-form input[type="email"]::placeholder {
  color: rgba(255,255,255,0.5);
}

.newsletter-form input[type="email"]:focus {
  border-color: var(--blanc);
  background: rgba(255,255,255,0.15);
}

.newsletter-form button {
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-main);
  background: var(--blanc);
  color: var(--bleu-france);
  border: 2px solid var(--blanc);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease;
  letter-spacing: 0.01em;
}

.newsletter-form button:hover {
  background: transparent;
  color: var(--blanc);
}

.form-success {
  display: none;
  padding: 16px 20px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--blanc);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-top: 16px;
  max-width: 520px;
}

.form-success.visible {
  display: block;
}

/* ===========================
   POURQUOI SECTION
   =========================== */

.pourquoi {
  padding: 80px 0;
  background: var(--blanc);
}

.pourquoi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.pourquoi-card {
  padding: 0;
}

.pourquoi-card .icon-wrapper {
  width: 56px;
  height: 56px;
  background: var(--gris-clair);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  border: 1px solid var(--gris-bordure);
}

.pourquoi-card .icon-wrapper svg {
  width: 28px;
  height: 28px;
  color: var(--bleu-france);
}

.pourquoi-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--bleu-france);
  margin-bottom: 10px;
}

.pourquoi-card p {
  font-size: 0.95rem;
  color: var(--gris-texte);
  line-height: 1.65;
}

/* ===========================
   RESSOURCES (PRODUITS)
   =========================== */

.ressources {
  padding: 80px 0;
  background: var(--gris-clair);
}

.ressources-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--blanc);
  border: 1px solid var(--gris-bordure);
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease;
}

.product-card:hover {
  border-color: var(--bleu-france);
}

.product-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  margin-bottom: 14px;
  align-self: flex-start;
}

.product-tag--free {
  background: #E8F5E9;
  color: #2E7D32;
  border: 1px solid #C8E6C9;
}

.product-tag--paid {
  background: #E3F2FD;
  color: var(--bleu-france);
  border: 1px solid #BBDEFB;
}

button.btn-product {
  font-family: var(--font-main);
  cursor: pointer;
}

.product-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--noir);
  margin-bottom: 10px;
  line-height: 1.35;
}

.product-card p {
  font-size: 0.88rem;
  color: var(--gris-texte);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 18px;
}

.btn-product {
  display: inline-block;
  padding: 10px 20px;
  font-size: 0.88rem;
  font-weight: 700;
  font-family: var(--font-main);
  text-align: center;
  border: 2px solid var(--bleu-france);
  color: var(--bleu-france);
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease;
  width: 100%;
}

.btn-product:hover {
  background: var(--bleu-france);
  color: var(--blanc);
  text-decoration: none;
}

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

/* ===========================
   NEWSLETTER CTA (repeated)
   =========================== */

.newsletter-cta {
  padding: 80px 0;
  background: var(--bleu-france);
  position: relative;
  overflow: hidden;
}

.newsletter-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.012) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.newsletter-cta .container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.newsletter-cta h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--blanc);
  margin-bottom: 16px;
}

.newsletter-cta p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 36px;
}

.newsletter-cta .newsletter-form {
  margin: 0 auto;
  justify-content: center;
}

.newsletter-cta .form-success {
  margin: 16px auto 0;
}

/* ===========================
   FOOTER
   =========================== */

.site-footer {
  background: #0A0A3A;
  color: rgba(255,255,255,0.7);
  padding: 48px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.footer-brand svg {
  flex-shrink: 0;
  opacity: 0.9;
}

.footer-brand-text .brand-name {
  color: var(--blanc);
  font-size: 1.1rem;
}

.footer-brand-text .brand-name::after {
  display: none;
}

.footer-brand-text .brand-tagline {
  color: rgba(255,255,255,0.5);
  font-size: 0.8rem;
  margin-top: 4px;
}

.footer-email {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  margin-top: 16px;
}

.footer-links h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--blanc);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--blanc);
  text-decoration: none;
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}

.footer-red-line {
  height: 4px;
  background: var(--rouge-france);
}

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

@media (max-width: 1024px) {
  .ressources-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===========================
   DOWNLOAD MODAL
   =========================== */

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.visible {
  display: flex;
}

.modal {
  background: var(--blanc);
  max-width: 480px;
  width: 100%;
  padding: 40px 36px;
  position: relative;
  border-top: 4px solid var(--bleu-france);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--gris-texte);
  cursor: pointer;
  line-height: 1;
  padding: 4px;
  transition: color 0.2s ease;
}

.modal-close:hover {
  color: var(--noir);
}

.modal-icon {
  text-align: center;
  margin-bottom: 20px;
}

.modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--bleu-france);
  text-align: center;
  margin-bottom: 10px;
}

.modal-text {
  font-size: 0.95rem;
  color: var(--gris-texte);
  text-align: center;
  line-height: 1.6;
  margin-bottom: 28px;
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-form input[type="email"] {
  width: 100%;
  padding: 14px 18px;
  font-size: 1rem;
  font-family: var(--font-main);
  border: 2px solid var(--gris-bordure);
  background: var(--blanc);
  color: var(--noir);
  outline: none;
  transition: border-color 0.2s ease;
}

.modal-form input[type="email"]:focus {
  border-color: var(--bleu-france);
}

.modal-form button {
  padding: 14px 24px;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-main);
  background: var(--bleu-france);
  color: var(--blanc);
  border: 2px solid var(--bleu-france);
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.modal-form button:hover {
  background: var(--bleu-france-dark);
  border-color: var(--bleu-france-dark);
}

.modal-form button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.modal-success {
  display: none;
  padding: 20px;
  background: #E8F5E9;
  border: 1px solid #C8E6C9;
  color: #2E7D32;
  font-size: 0.95rem;
  line-height: 1.5;
  text-align: center;
}

.modal-success p {
  margin-bottom: 16px;
}

.btn-modal-download {
  display: inline-block;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-main);
  background: var(--bleu-france);
  color: var(--blanc);
  border: none;
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.btn-modal-download:hover {
  background: var(--bleu-france-dark);
  color: var(--blanc);
  text-decoration: none;
}

.modal-error {
  display: none;
  padding: 12px;
  background: #FFEBEE;
  border: 1px solid #FFCDD2;
  color: #C62828;
  font-size: 0.9rem;
  text-align: center;
  margin-top: 8px;
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--blanc);
    flex-direction: column;
    padding: 16px 32px;
    border-bottom: 3px solid var(--bleu-france);
    gap: 0;
  }

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

  .main-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--gris-bordure);
    width: 100%;
  }

  .main-nav a:last-child {
    border-bottom: none;
  }

  .header-inner {
    position: relative;
    padding: 14px 20px;
  }

  .container {
    padding: 0 20px;
  }

  /* Hero */
  .hero {
    padding: 56px 0 64px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1.05rem;
  }

  .newsletter-form {
    flex-direction: column;
    max-width: 100%;
  }

  .newsletter-form input[type="email"] {
    border-right: 2px solid rgba(255,255,255,0.3);
    border-bottom: none;
  }

  .newsletter-form button {
    width: 100%;
  }

  .form-success {
    max-width: 100%;
  }

  /* Pourquoi */
  .pourquoi {
    padding: 56px 0;
  }

  .pourquoi-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* Ressources */
  .ressources {
    padding: 56px 0;
  }

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

  .modal {
    padding: 32px 24px;
  }

  /* Newsletter CTA */
  .newsletter-cta {
    padding: 56px 0;
  }

  .newsletter-cta h2 {
    font-size: 1.8rem;
  }

  .newsletter-cta .newsletter-form {
    max-width: 100%;
  }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section-title {
    font-size: 1.7rem;
  }
}

/* ===========================
   BREADCRUMB
   =========================== */

.breadcrumb {
  padding: 16px 0;
  font-size: 0.88rem;
  color: var(--gris-texte);
}

.breadcrumb a {
  color: var(--bleu-france);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb .separator {
  margin: 0 8px;
  color: var(--gris-bordure);
}

/* ===========================
   LEGAL / POLICY PAGES
   =========================== */

.legal-content {
  padding: 48px 0 80px;
}

.legal-content .section-title {
  margin-bottom: 24px;
}

.legal-content h2:not(.section-title) {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--bleu-france);
  margin-top: 40px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--gris-bordure);
}

.legal-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--noir);
  margin-top: 28px;
  margin-bottom: 8px;
}

.legal-content p {
  font-size: 0.95rem;
  color: var(--gris-texte);
  line-height: 1.75;
  margin-bottom: 14px;
  max-width: 800px;
}

.legal-content ul {
  list-style: none;
  padding: 0;
  margin-bottom: 18px;
}

.legal-content ul li {
  font-size: 0.95rem;
  color: var(--gris-texte);
  line-height: 1.75;
  padding-left: 20px;
  position: relative;
  margin-bottom: 6px;
}

.legal-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--bleu-france);
}

.legal-content a {
  color: var(--bleu-france);
  text-decoration: underline;
}

.legal-content .last-updated {
  font-size: 0.85rem;
  color: rgba(102,102,102,0.7);
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--gris-bordure);
}

/* ===========================
   CONTACT FORM
   =========================== */

.contact-section {
  padding: 48px 0 80px;
}

.contact-section .section-title {
  margin-bottom: 8px;
}

.contact-section .section-subtitle {
  margin-bottom: 40px;
}

.contact-form {
  max-width: 640px;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--noir);
  margin-bottom: 6px;
}

.form-group label .required {
  color: var(--rouge-france);
  margin-left: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: var(--font-main);
  border: 2px solid var(--gris-bordure);
  background: var(--blanc);
  color: var(--noir);
  outline: none;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--bleu-france);
}

.form-group textarea {
  min-height: 160px;
  resize: vertical;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23666' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.captcha-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.captcha-question {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--bleu-france);
  white-space: nowrap;
  background: var(--gris-clair);
  padding: 12px 16px;
  border: 2px solid var(--gris-bordure);
}

.captcha-group input {
  width: 100px;
}

.btn-contact {
  display: inline-block;
  padding: 14px 36px;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-main);
  background: var(--bleu-france);
  color: var(--blanc);
  border: 2px solid var(--bleu-france);
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease;
  letter-spacing: 0.01em;
}

.btn-contact:hover {
  background: var(--bleu-france-dark);
  border-color: var(--bleu-france-dark);
}

.contact-success,
.contact-error {
  display: none;
  padding: 16px 20px;
  font-size: 0.95rem;
  line-height: 1.5;
  margin-top: 20px;
  max-width: 640px;
}

.contact-success {
  background: #E8F5E9;
  border: 1px solid #C8E6C9;
  color: #2E7D32;
}

.contact-error {
  background: #FFEBEE;
  border: 1px solid #FFCDD2;
  color: #C62828;
}

.contact-success.visible,
.contact-error.visible {
  display: block;
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.7rem;
  }

  .brand-name {
    font-size: 1.1rem;
  }

  .brand-tagline {
    font-size: 0.7rem;
  }

  .section-title {
    font-size: 1.5rem;
  }
}