/* ============================================================
   CoreLink Marketing - Charte CSS
   Module 16 IOSS - Public marketing website
   ============================================================ */

:root {
  --primary: #0A2540;
  --accent: #00D4FF;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --bg: #0F172A;
  --bg-card: #1E293B;
  --text: #F8FAFC;
  --text-muted: #94A3B8;
  --bg-section-alt: #111827;
  --accent-glow: rgba(0,212,255,0.15);
  --border-subtle: rgba(255,255,255,0.05);
  --border-hover: rgba(0,212,255,0.2);
  --container: 1200px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 20px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: 56px; font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: 40px; font-weight: 700; }
h3 { font-size: 24px; font-weight: 600; }
h4 { font-size: 18px; font-weight: 600; }

p { color: var(--text-muted); font-size: 16px; }
a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

code, .mono { font-family: 'JetBrains Mono', 'Courier New', monospace; font-size: 13px; color: var(--text-muted); }

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

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-alt { background: var(--bg-section-alt); }
.section-sm { padding: 64px 0; }
.text-center { text-align: center; }
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-muted); }

/* ============================================================
   HEADER / NAVIGATION
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15,23,42,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), #0088CC);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: var(--primary);
}
.logo-text span { color: var(--accent); }

.nav {
  display: flex;
  gap: 32px;
  align-items: center;
}
.nav-link {
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--accent); }

.header-cta { display: flex; gap: 12px; align-items: center; }

/* ============================================================
   BOUTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: var(--primary);
}
.btn-primary:hover {
  background: #00B8E0;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,212,255,0.35);
  opacity: 1;
}
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid rgba(255,255,255,0.1);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text);
  opacity: 1;
}
.btn-lg { padding: 16px 32px; font-size: 16px; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: 120px 0 96px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.hero .container { position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 24px;
}
.hero h1 { margin-bottom: 24px; max-width: 900px; }
.hero-subtitle {
  font-size: 20px;
  color: var(--text-muted);
  max-width: 640px;
  margin-bottom: 40px;
  line-height: 1.6;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

/* ============================================================
   STATS
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
  box-shadow: 0 8px 24px rgba(0,212,255,0.1);
}
.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.stat-value {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 8px;
}
.stat-value.accent { color: var(--accent); }
.stat-value.success { color: var(--success); }
.stat-value.warning { color: var(--warning); }
.stat-desc { font-size: 13px; color: var(--text-muted); }

/* ============================================================
   SECTION HEADER
   ============================================================ */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-header h2 { margin-bottom: 16px; }
.section-header p { font-size: 18px; }

/* ============================================================
   FEATURE CARDS
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 12px 32px rgba(0,212,255,0.08);
}
.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(0,212,255,0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
  stroke-width: 2;
}
.feature-card h3 { margin-bottom: 12px; font-size: 20px; }
.feature-card p { font-size: 15px; line-height: 1.6; }

/* ============================================================
   DEPLOYMENT (2 cards)
   ============================================================ */
.deployment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 32px;
}
.deployment-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  transition: all 0.3s;
}
.deployment-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 12px 32px rgba(0,212,255,0.08);
}
.deployment-card.recommended {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.deployment-badge {
  position: absolute;
  top: -12px;
  right: 24px;
  padding: 4px 14px;
  background: var(--accent);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.deployment-card h3 { font-size: 24px; margin-bottom: 12px; }
.deployment-card .deployment-desc {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 24px;
  min-height: 48px;
}
.deployment-list { list-style: none; margin-bottom: 32px; }
.deployment-list li {
  padding: 10px 0;
  padding-left: 28px;
  position: relative;
  font-size: 14px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
}
.deployment-list li:last-child { border-bottom: none; }
.deployment-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ============================================================
   MOCKUP (dashboard preview)
   ============================================================ */
.mockup {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
  margin-top: 64px;
}
.mockup-header {
  padding: 12px 20px;
  background: rgba(0,0,0,0.2);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
}
.mockup-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #EF4444;
}
.mockup-dot.yellow { background: #F59E0B; }
.mockup-dot.green { background: #10B981; }

.mockup-image {
  width: 100%;
  height: auto;
  display: block;
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* ============================================================
   FORMULAIRE CONTACT
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  align-items: start;
}
.contact-info h2 { margin-bottom: 16px; }
.contact-info > p { margin-bottom: 32px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.contact-item:last-child { border-bottom: none; }
.contact-icon {
  width: 40px;
  height: 40px;
  background: rgba(0,212,255,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-label {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.contact-value { font-size: 15px; color: var(--text); }

.form {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  transition: all 0.2s;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}
.form-textarea { min-height: 120px; resize: vertical; }
.form-error {
  color: var(--danger);
  font-size: 13px;
  margin-top: 6px;
  display: none;
}
.form-error.visible { display: block; }
.form-success {
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.3);
  color: var(--success);
  padding: 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-top: 20px;
  display: none;
}
.form-success.visible { display: block; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s;
}
.faq-question:hover { background: rgba(255,255,255,0.02); }
.faq-toggle {
  color: var(--accent);
  font-size: 20px;
  transition: transform 0.2s;
}
.faq-item.open .faq-toggle { transform: rotate(45deg); }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s;
}
.faq-item.open .faq-answer {
  padding: 0 24px 20px;
  max-height: 400px;
}
.faq-answer p { font-size: 15px; }

/* ============================================================
   CTA FINAL
   ============================================================ */
.cta-final {
  background: linear-gradient(135deg, var(--primary) 0%, var(--bg-card) 100%);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-final::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  pointer-events: none;
}
.cta-final > * { position: relative; z-index: 1; }
.cta-final h2 { margin-bottom: 16px; }
.cta-final p { font-size: 18px; margin-bottom: 32px; max-width: 560px; margin-left: auto; margin-right: auto; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--primary);
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; max-width: 280px; }
.footer-col h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 12px; }
.footer-col a { font-size: 14px; color: var(--text-muted); }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  h1 { font-size: 40px; }
  h2 { font-size: 32px; }
  .hero { padding: 80px 0 64px; }
  .section { padding: 64px 0; }
  .nav { display: none; }
  
  .header-cta {
    gap: 8px; /* Réduit l'espace entre les deux boutons */
  }
  .header-cta .btn {
    padding: 8px 12px; /* Réduit la taille des deux boutons */
    font-size: 12px;
  }
  .header-cta .btn-ghost { 
    display: inline-flex; /* Garde le bouton Log in visible */
  }
  .mockup-body { grid-template-columns: 1fr; }
  .mockup-sidebar { display: none; }
  .mockup-row { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cta-final { padding: 48px 24px; }
}

@media (max-width: 600px) {
  h1 { font-size: 32px; }
  h2 { font-size: 26px; }
  h3 { font-size: 20px; }
  .hero-subtitle { font-size: 17px; }
  .stats-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .deployment-grid { grid-template-columns: 1fr; }
  .mockup-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .form { padding: 24px; }
  .btn { padding: 10px 18px; font-size: 13px; }
  .btn-lg { padding: 14px 24px; font-size: 15px; }
}

/* ============================================================
   PREMIUM FOOTER OVERRIDES
   ============================================================ */
.footer-bottom {
  padding-top: 40px;
  margin-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08); /* Bordure plus douce */
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  letter-spacing: 0.3px;
  color: var(--text-muted);
}

/* Optionnel : Ajouter une petite lueur au survol des liens du footer */
.footer-col a {
  transition: color 0.2s, transform 0.2s;
  display: inline-block;
}

.footer-col a:hover {
  color: var(--accent);
  transform: translateX(3px);
}