:root {
  --trafic-night: #0B192C;
  --trafic-dark: #1E3E62;
  --trafic-orange: #FF6500;
  --trafic-orange-hover: #E05800;
  --trafic-amber: #F59E0B;
  --trafic-emerald: #10B981;
  --trafic-rose: #EF4444;
  --trafic-blue: #0284C7;
  --trafic-bg: #F8FAFC;
  --trafic-card: #FFFFFF;
  --trafic-border: rgba(11, 25, 44, 0.12);
  --trafic-muted: #64748B;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--trafic-night);
  background: var(--trafic-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* En-tête */
header.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--trafic-border);
  position: sticky; top: 0; z-index: 100;
}
.header-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 24px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; font-size: 21px; font-weight: 900;
  color: var(--trafic-night); letter-spacing: -0.02em;
}
.brand-badge {
  background: var(--trafic-orange); color: #fff;
  font-size: 10px; font-weight: 800; padding: 2px 6px; border-radius: 4px;
  text-transform: uppercase;
}
.nav-actions { display: flex; align-items: center; gap: 12px; }

/* Boutons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 9px; font-size: 13.5px; font-weight: 700;
  text-decoration: none; cursor: pointer; transition: all .15s ease; border: 0;
  font-family: inherit;
}
.btn-primary {
  background: var(--trafic-orange); color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(255, 101, 0, 0.28);
}
.btn-primary:hover { background: var(--trafic-orange-hover); transform: translateY(-1px); }
.btn-outline {
  background: #ffffff; border: 1.5px solid var(--trafic-border); color: var(--trafic-night);
}
.btn-outline:hover { background: #f1f5f9; border-color: var(--trafic-night); }
.btn-night {
  background: var(--trafic-night); color: #ffffff !important;
}
.btn-night:hover { background: var(--trafic-dark); }

/* Hero */
.hero {
  max-width: 1000px; margin: 50px auto 40px; text-align: center; padding: 0 20px;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(255, 101, 0, 0.08); border: 1px solid rgba(255, 101, 0, 0.25);
  color: var(--trafic-orange); padding: 5px 14px; border-radius: 99px;
  font-size: 12.5px; font-weight: 700; margin-bottom: 20px;
}
.hero h1 {
  font-size: 42px; font-weight: 900; line-height: 1.15;
  letter-spacing: -0.03em; margin-bottom: 18px;
}
.hero h1 span { color: var(--trafic-orange); }
.hero-sub {
  font-size: 17px; color: var(--trafic-muted); max-width: 720px;
  margin: 0 auto 36px; line-height: 1.6;
}

/* Zone Drag and Drop */
.dropzone-card {
  max-width: 820px; margin: 0 auto;
  background: #ffffff; border: 2px dashed rgba(255, 101, 0, 0.4);
  border-radius: 20px; padding: 44px 30px; text-align: center;
  box-shadow: 0 12px 36px rgba(11, 25, 44, 0.05);
  transition: all .2s ease; cursor: pointer; position: relative;
}
.dropzone-card.dragover {
  border-color: var(--trafic-orange);
  background: rgba(255, 101, 0, 0.03);
  transform: scale(1.01);
}
.dropzone-icon {
  width: 64px; height: 64px; margin: 0 auto 16px;
  background: rgba(255, 101, 0, 0.1); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--trafic-orange);
}
.dropzone-title { font-size: 19px; font-weight: 800; margin-bottom: 6px; }
.dropzone-desc { font-size: 14px; color: var(--trafic-muted); margin-bottom: 20px; }
.dropzone-formats {
  display: flex; justify-content: center; gap: 8px; flex-wrap: wrap;
}
.format-pill {
  font-size: 11.5px; font-weight: 700; background: #f1f5f9;
  padding: 4px 10px; border-radius: 6px; color: var(--trafic-dark);
}

/* Preview Modal / Progress */
.analysis-progress {
  display: none; margin-top: 20px;
  background: #f8fafc; border: 1px solid var(--trafic-border);
  border-radius: 12px; padding: 20px; text-align: left;
}
.progress-bar-bg {
  width: 100%; height: 8px; background: #e2e8f0; border-radius: 99px;
  overflow: hidden; margin: 10px 0;
}
.progress-bar-fill {
  width: 10%; height: 100%; background: var(--trafic-orange);
  transition: width 0.3s ease;
}

/* Grille 4 colonnes arguments */
.features-grid {
  max-width: 1200px; margin: 70px auto; padding: 0 24px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px;
}
.feature-card {
  background: #fff; border: 1px solid var(--trafic-border); border-radius: 16px;
  padding: 26px; box-shadow: 0 4px 16px rgba(11,25,44,0.03);
}
.feature-icon {
  width: 44px; height: 44px; border-radius: 10px; margin-bottom: 16px;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.feature-card h3 { font-size: 16.5px; font-weight: 800; margin-bottom: 8px; }
.feature-card p { font-size: 13.5px; color: var(--trafic-muted); line-height: 1.55; }

/* Tarifs */
.pricing-section {
  background: #ffffff; border-top: 1px solid var(--trafic-border);
  padding: 70px 24px; text-align: center;
}
.pricing-grid {
  max-width: 1100px; margin: 40px auto 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px;
}
.pricing-card {
  border: 1px solid var(--trafic-border); border-radius: 18px; padding: 32px 24px;
  background: #fff; text-align: left; display: flex; flex-direction: column;
  justify-content: space-between; transition: all .2s;
}
.pricing-card.featured {
  border: 2px solid var(--trafic-orange);
  box-shadow: 0 10px 30px rgba(255, 101, 0, 0.12);
}
.price-val { font-size: 32px; font-weight: 900; color: var(--trafic-night); margin: 14px 0 6px; }
.price-sub { font-size: 12px; color: var(--trafic-muted); margin-bottom: 20px; }

/* Modale */
.modal-overlay {
  display: none; position: fixed; inset: 0; background: rgba(11, 25, 44, 0.65);
  backdrop-filter: blur(4px); z-index: 1000; align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background: #fff; border-radius: 20px; max-width: 440px; width: 100%;
  padding: 34px 30px; box-shadow: 0 20px 50px rgba(0,0,0,0.3); position: relative;
}
.modal-close {
  position: absolute; top: 16px; right: 18px; background: none; border: 0;
  font-size: 22px; cursor: pointer; color: var(--trafic-muted);
}
.form-group { margin-bottom: 16px; text-align: left; }
.form-group label { display: block; font-size: 12.5px; font-weight: 700; margin-bottom: 6px; }
.form-group input, .form-group select {
  width: 100%; padding: 10px 14px; border: 1.5px solid var(--trafic-border);
  border-radius: 9px; font-family: inherit; font-size: 14px; outline: 0;
}
.form-group input:focus, .form-group select:focus { border-color: var(--trafic-orange); }

/* Footer */
footer.site-footer {
  border-top: 1px solid var(--trafic-border); background: #fff;
  padding: 30px 24px; text-align: center; font-size: 13px; color: var(--trafic-muted);
}