/* ===== NICE VISION — Design "Clinique premium + précision douce" ===== */
:root {
  --bg: #fbfcfd;          /* blanc cassé */
  --bg-alt: #f3f7fa;      /* gris bleuté très pâle */
  --ink: #123044;         /* bleu nuit profond */
  --text: #4a6073;        /* texte */
  --text-dim: #8296a8;
  --primary: #0e5f8a;     /* bleu profond premium */
  --primary-soft: #e6f0f6;
  --gold: #c9a24b;        /* doré discret */
  --gold-soft: #f3ead9;
  --border: #e6edf2;
  --white: #ffffff;
  --shadow: 0 18px 44px rgba(18, 48, 68, 0.08);
  --shadow-soft: 0 6px 20px rgba(18, 48, 68, 0.05);
  --radius: 16px;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16.5px;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { color: var(--ink); line-height: 1.2; }
h1 { font-family: var(--font-serif); font-weight: 500; font-size: clamp(2.5rem, 5.2vw, 4rem); letter-spacing: -0.01em; }
h1 em { font-style: italic; color: var(--primary); }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); font-weight: 600; letter-spacing: -0.01em; }
h2 em { font-family: var(--font-serif); font-style: italic; font-weight: 500; color: var(--primary); }
h3 { font-size: 1.18rem; margin-bottom: 10px; }
p { margin-bottom: 12px; }
.lead { font-size: 1.12rem; max-width: 720px; margin: 18px auto 0; color: var(--text); }
.eyebrow {
  display: flex; align-items: center; gap: 12px;
  text-transform: uppercase; letter-spacing: 0.2em; font-size: 0.74rem;
  font-weight: 700; color: var(--gold); margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 30px; height: 1px; background: var(--gold); display: inline-block; }

/* ===== Header ===== */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: rgba(251, 252, 253, 0.9); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.header.scrolled { border-bottom-color: var(--border); box-shadow: 0 4px 20px rgba(18,48,68,0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; }
.logo-img { flex-shrink: 0; border-radius: 6px; }
.logo svg { color: var(--primary); }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a { color: var(--text); font-weight: 500; font-size: 0.9rem; transition: color .2s; white-space: nowrap; }
.nav a:hover { color: var(--primary); }
.burger { display: none; background: none; border: 0; cursor: pointer; padding: 6px; }
.burger span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: .3s; }

/* ===== Boutons ===== */
.btn {
  display: inline-block; padding: 14px 30px; border-radius: 999px;
  font-weight: 600; font-size: 0.94rem; transition: all .25s; cursor: pointer; border: 0;
  letter-spacing: 0.01em;
}
.btn-primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 8px 24px rgba(14, 95, 138, 0.25);
}
.nav .btn-primary { color: #fff; }
.btn-primary:hover { background: #0a4e73; transform: translateY(-2px); box-shadow: 0 12px 30px rgba(14, 95, 138, 0.32); }
.btn-ghost {
  border: 1.5px solid rgba(14, 95, 138, 0.45); color: var(--primary);
  background: transparent;
}
.btn-ghost:hover { background: var(--primary-soft); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ===== HERO ===== */
.hero { position: relative; min-height: 94vh; display: flex; align-items: center; overflow: hidden; background: var(--bg); }
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 520px at 88% -8%, rgba(14, 95, 138, 0.10), transparent 62%),
    radial-gradient(700px 480px at -8% 112%, rgba(201, 162, 75, 0.08), transparent 55%),
    linear-gradient(168deg, #fdfefe 0%, #f4f9fc 60%, #eef5fa 100%);
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(18, 48, 68, 0.05) 1px, transparent 1px);
  background-size: 30px 30px; opacity: 0.6;
}

/* Visuel lentille (cercles concentriques discrets) */
.hero-visual { position: absolute; right: 4%; top: 50%; transform: translateY(-50%); width: 460px; height: 460px; pointer-events: none; opacity: 0.9; }
.lens-ring { position: absolute; border-radius: 50%; }
.lens-ring-1 { inset: 0; border: 1px solid rgba(14, 95, 138, 0.16); }
.lens-ring-2 { inset: 70px; border: 1px dashed rgba(14, 95, 138, 0.22); }
.lens-ring-gold { inset: 150px; border: 1px solid rgba(201, 162, 75, 0.4); }
.hero-cross { position: absolute; right: calc(4% + 228px); top: 50%; transform: translate(-50%, -50%); width: 16px; height: 16px; pointer-events: none; }
.hero-cross::before, .hero-cross::after { content: ""; position: absolute; background: rgba(201, 162, 75, 0.8); }
.hero-cross::before { left: 50%; top: -14px; bottom: -14px; width: 1px; }
.hero-cross::after { top: 50%; left: -14px; right: -14px; height: 1px; }

.hero-inner { position: relative; z-index: 2; padding-top: 130px; padding-bottom: 100px; max-width: 640px; }
.hero h1 { color: var(--ink); margin-bottom: 26px; }
.hero-text { font-size: 1.14rem; max-width: 560px; }
.hero-actions { display: flex; gap: 16px; margin-top: 36px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 48px; margin-top: 62px; flex-wrap: wrap; }
.stat strong { display: block; font-size: 1.85rem; font-weight: 700; color: var(--ink); font-family: var(--font-serif); }
.stat strong::after { content: ""; display: block; width: 22px; height: 2px; background: var(--gold); margin-top: 6px; }
.stat span { font-size: 0.85rem; color: var(--text-dim); }

/* Micro-étiquette (précision douce) */
.hero-meta {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.24em;
  color: var(--text); white-space: nowrap; z-index: 2;
}

/* ===== Sections ===== */
.section { padding: 100px 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; margin-bottom: 58px; }
.section-head .eyebrow { justify-content: center; }
.section-head .eyebrow::after { content: ""; width: 30px; height: 1px; background: var(--gold); }

/* ===== Grilles & cartes ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; box-shadow: var(--shadow-soft);
  transition: transform .3s, box-shadow .3s, border-color .3s;
  position: relative;
}
.card::before {
  content: ""; position: absolute; top: 0; left: 32px; right: 32px; height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform .4s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #d8e4ec; }
.card:hover::before { transform: scaleX(1); }
.card-cta {
  background: linear-gradient(165deg, var(--ink), #1a4a68); color: #e8f2f8; border: 0;
}
.card-cta h3 { color: #fff; }
.card-cta .btn { margin-top: 8px; }
.card-cta::before { display: none; }
.checklist { list-style: none; }
.checklist li { padding: 7px 0 7px 30px; position: relative; }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: 7px;
  width: 20px; height: 20px; border-radius: 50%;
  border: 1px solid var(--gold); color: var(--gold);
  background: var(--gold-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.74rem; font-weight: 700;
}
.tag {
  display: inline-block; margin-top: 8px; padding: 5px 14px;
  background: var(--primary-soft); color: var(--primary);
  border-radius: 999px; font-size: 0.78rem; font-weight: 600;
}

/* ===== Étapes ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.step { text-align: center; padding: 30px 18px; }
.step-num {
  width: 58px; height: 58px; margin: 0 auto 18px; border-radius: 50%;
  border: 1.5px solid var(--gold); color: var(--ink);
  background: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif); font-size: 1.3rem;
  box-shadow: 0 6px 18px rgba(201, 162, 75, 0.18);
}
.step h3 { margin-bottom: 8px; }

/* ===== Contact ===== */
.contact-grid { align-items: start; }
.contact-info p { margin-bottom: 18px; }
.contact-info strong { color: var(--ink); }
.note { font-size: 0.82rem; color: var(--text-dim); font-style: italic; }
.form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form label { font-size: 0.84rem; font-weight: 600; color: var(--ink); }
.form input, .form select, .form textarea {
  padding: 13px 15px; border: 1.5px solid var(--border); border-radius: 10px;
  font-family: inherit; font-size: 0.95rem; color: var(--ink); background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none; border-color: var(--gold); box-shadow: 0 0 0 3.5px rgba(201, 162, 75, 0.15);
}
.form-status { font-size: 0.9rem; font-weight: 600; min-height: 22px; }
.form-status.ok { color: #1a8f4c; }
.form-status.err { color: #c0392b; }

/* ===== Footer ===== */
.footer { background: var(--ink); color: #b8c9d6; padding: 48px 0; text-align: center; }
.footer-inner p { margin-bottom: 8px; }
.footer a { color: var(--gold); }
.footer-note { font-size: 0.82rem; opacity: 0.65; }

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .hero-visual, .hero-cross { display: none; }
  .hero-inner { max-width: 100%; }
}
@media (max-width: 920px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .nav {
    position: fixed; top: 76px; right: 0; width: 280px; height: calc(100vh - 76px);
    background: #fff; flex-direction: column; align-items: flex-start;
    padding: 34px 30px; gap: 24px; box-shadow: -10px 0 30px rgba(18,48,68,0.12);
    transform: translateX(100%); transition: transform .3s;
  }
  .nav.open { transform: translateX(0); }
  .burger { display: block; }
  .grid-2, .grid-3, .steps, .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 30px; }
  .section { padding: 74px 0; }
  .hero-meta { position: static; transform: none; margin-top: 34px; text-align: center; }
}