/* ============================================================
   Virage Expansion — Design System
   V2 Multi-page · Dark Navy + Gold
   ============================================================ */

/* ========================
   1. RESET & BASE
   ======================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font-family: inherit; }

/* ========================
   2. DESIGN TOKENS
   ======================== */
:root {
  --bg: #0B1220;
  --bg-2: #0E1728;
  --surface: #141C2B;
  --surface-2: #1A2337;
  --text: #F5F5F2;
  --text-dim: #A3ACB9;
  --text-faint: #68748A;
  --accent: #C6A15B;
  --accent-dim: #7A6137;
  --border: #2A3447;
  --border-strong: #36445A;
  --success: #6DAA7D;
  --nav-h: 74px;
  --max-w: 1100px;
  --section-v: 96px;
}

/* ========================
   3. TYPOGRAPHY
   ======================== */
h1, h2, h3, h4 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 500;
  line-height: 1.12;
  color: var(--text);
}
p { color: var(--text-dim); line-height: 1.72; }
strong, b { font-weight: 600; color: var(--text); }

/* ========================
   4. LAYOUT
   ======================== */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 36px;
}
.section {
  padding: var(--section-v) 0;
  border-top: 1px solid var(--border);
}
.section:first-of-type { border-top: none; }

/* 2-col grid: label + body */
.section-grid {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 0 72px;
  align-items: start;
}
.section-label {
  font-family: 'DM Mono', 'Courier New', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  padding-top: 6px;
  line-height: 1.4;
}
.section-body > p + p { margin-top: 1.1em; }
.section-body > h3 { font-size: clamp(20px, 2vw, 26px); margin-bottom: 14px; }

/* ========================
   5. NAVIGATION
   ======================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(11, 18, 32, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease;
}
.nav.scrolled {
  background: rgba(11, 18, 32, 0.96);
  border-bottom-color: var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

/* — Brand — */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-mark { width: 26px; height: 32px; }
.nav-brand-text { display: flex; flex-direction: column; gap: 2px; }
.nav-brand-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--text);
  line-height: 1;
}
.nav-brand-sub {
  font-family: 'DM Mono', monospace;
  font-size: 7.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1;
}

/* — Links — */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  font-family: 'DM Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  padding: 8px 11px;
  white-space: nowrap;
  transition: color .2s;
  cursor: pointer;
  background: none;
  border: none;
}
.nav-link:hover, .nav-link.active { color: var(--text); }
.nav-link.active { color: var(--accent); }
.nav-link--soon {
  color: var(--text-faint);
  opacity: 0.38;
  pointer-events: none;
  cursor: default;
}

/* — Dropdown — */
.nav-has-dropdown { position: relative; }
.nav-has-dropdown > .nav-link { display: flex; align-items: center; gap: 5px; }
.nav-chevron { font-size: 8px; color: var(--text-faint); transition: transform .2s ease; line-height: 1; }
.nav-has-dropdown:hover .nav-chevron { transform: rotate(180deg); }
.nav-dropdown {
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: var(--bg-2);
  border: 1px solid var(--border-strong);
  border-radius: 2px;
  min-width: 215px;
  padding: 10px 0 6px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 200;
}
.nav-has-dropdown:hover .nav-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-link {
  display: block;
  padding: 10px 18px;
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .2s, border-color .2s, padding-left .2s;
}
.nav-dropdown-link:hover { color: var(--accent); border-left-color: var(--accent); padding-left: 22px; }
.nav-dropdown-link.active { color: var(--accent); border-left-color: var(--accent); }

/* — Actions — */
.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.lang-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 5px 10px;
  cursor: pointer;
  transition: border-color .2s, color .2s;
}
.lang-toggle:hover { border-color: var(--accent); color: var(--accent); }

/* — Burger — */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 2px;
  width: 30px;
}
.nav-burger span {
  display: block;
  height: 1px;
  background: var(--text-dim);
  transition: transform .3s, opacity .3s, width .3s;
}

/* ========================
   6. HERO — HOME
   ======================== */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-h) + 80px) 36px 100px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.022 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.7;
}
.hero-inner { position: relative; max-width: 880px; margin: 0 auto; }
.hero-eyebrow {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 30px;
}
.hero h1 {
  font-size: clamp(36px, 5.2vw, 70px);
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 28px;
  font-weight: 500;
}
.hero-sub {
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--text-dim);
  line-height: 1.78;
  max-width: 580px;
  margin: 0 auto 50px;
}

/* ========================
   7. PAGE HERO — INNER
   ======================== */
.page-hero {
  padding: calc(var(--nav-h) + 80px) 0 72px;
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
}
.breadcrumb a {
  font-family: 'DM Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  text-decoration: none;
  transition: color .2s;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--text-faint); font-size: 10px; opacity: 0.5; }
.breadcrumb-current {
  font-family: 'DM Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.page-hero h1 {
  font-size: clamp(30px, 3.8vw, 56px);
  max-width: 720px;
  margin-bottom: 22px;
}
.page-hero-desc {
  font-size: clamp(14px, 1.3vw, 16.5px);
  color: var(--text-dim);
  line-height: 1.78;
  max-width: 620px;
}
.page-hero-label {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

/* ========================
   8. SIGNATURE BAND
   ======================== */
.signature-band {
  padding: 38px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.signature-band p {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(16px, 2vw, 22px);
  font-style: italic;
  color: var(--text-dim);
  letter-spacing: 0.01em;
  line-height: 1.5;
}

/* ========================
   9. PILLAR / SERVICE CARDS
   ======================== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 48px;
}
.card {
  background: var(--surface);
  padding: 42px 38px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background .2s;
}
.card:hover { background: var(--surface-2); }
.card-num {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--accent-dim);
}
.card-tag {
  font-family: 'DM Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.card h3 {
  font-size: clamp(19px, 2vw, 26px);
  color: var(--text);
  line-height: 1.2;
}
.card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.68;
  flex: 1;
}
.card-arrow {
  color: var(--accent);
  font-size: 14px;
  display: inline-block;
  transition: transform .2s;
  margin-top: 6px;
}
.card:hover .card-arrow { transform: translateX(5px); }

/* Method hub cards (list style) */
.method-list { margin-top: 0; }
.method-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 0 72px;
  padding: 52px 0;
  border-top: 1px solid var(--border);
  text-decoration: none;
  transition: background .15s;
  align-items: start;
}
.method-item:last-child { border-bottom: 1px solid var(--border); }
.method-item-label {}
.method-tag {
  font-family: 'DM Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.method-seq {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  color: var(--text-faint);
  letter-spacing: 0.1em;
}
.method-item-body h3 {
  font-size: clamp(22px, 2.3vw, 32px);
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.15;
}
.method-item-body p {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.72;
  max-width: 540px;
  margin-bottom: 18px;
}
.method-cta {
  font-family: 'DM Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: gap .2s;
}
.method-item:hover .method-cta { gap: 10px; }

/* ========================
   10. INTERVENTIONS
   ======================== */
.interventions { display: grid; gap: 40px; }
.iv {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 0 18px;
}
.iv-num {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-dim);
  padding-top: 3px;
}
.iv-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 19px;
  color: var(--text);
  margin-bottom: 6px;
}
.iv-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.68;
}

/* ========================
   11. LIVRABLES
   ======================== */
.livrables {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.livrables li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
}
.livrables li::before {
  content: '→';
  color: var(--accent);
  flex-shrink: 0;
  font-size: 12px;
}

/* ========================
   12. FORMATS (Execution)
   ======================== */
.formats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 16px;
}
.format-card {
  background: var(--surface);
  padding: 34px 30px;
}
.format-tag {
  display: block;
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.format-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 22px;
  color: var(--text);
  margin-bottom: 10px;
}
.format-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
}

/* ========================
   13. CTA BUTTON
   ======================== */
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  background: transparent;
  transition: background .2s, color .2s;
  cursor: pointer;
}
.cta-btn:hover { background: var(--accent); color: var(--bg); }
.cta-btn-arrow { transition: transform .2s; }
.cta-btn:hover .cta-btn-arrow { transform: translateX(4px); }

/* CTA full section */
.cta-section {
  padding: var(--section-v) 0;
  text-align: center;
  background: var(--surface);
}
.cta-section h2 { font-size: clamp(26px, 3.5vw, 46px); margin-bottom: 18px; max-width: 640px; margin-left: auto; margin-right: auto; }
.cta-section p { max-width: 500px; margin: 0 auto 40px; }

/* ========================
   14. SECTEURS PAGE
   ======================== */
.target-list { display: flex; flex-direction: column; }
.target-item {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.target-item:first-child { border-top: 1px solid var(--border); }
.target-idx {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--accent-dim);
  flex-shrink: 0;
  width: 28px;
}
.target-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 19px;
  color: var(--text);
}

.cred-list { display: grid; gap: 36px; }
.cred-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 0 18px;
}
.cred-num {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--accent-dim);
  padding-top: 3px;
}
.cred-body h4 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 20px;
  color: var(--text);
  margin-bottom: 7px;
}
.cred-body p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.68;
}

/* ========================
   15. CONTACT FORM
   ======================== */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 28px;
  margin-bottom: 28px;
}
.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.form-field input,
.form-field textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  padding: 12px 16px;
  outline: none;
  transition: border-color .2s;
  width: 100%;
}
.form-field textarea { min-height: 130px; resize: vertical; }
.form-field input:focus,
.form-field textarea:focus { border-color: var(--accent); }
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--text-faint); }
.form-note {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-top: 14px;
}
#form-confirm {
  display: none;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--success);
}
#form-confirm p {
  color: var(--success);
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
#form-error { display: none; margin-top: 12px; }
#form-error p { font-size: 13px; color: #e57373; }

/* ========================
   16. FOOTER
   ======================== */
.footer {
  border-top: 1px solid var(--border);
  padding-top: 64px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 48px;
  align-items: start;
  padding-bottom: 64px;
}
.footer-tagline {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-top: 18px;
  line-height: 1.65;
  max-width: 240px;
}
.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-nav a {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  transition: color .2s;
}
.footer-nav a:hover { color: var(--accent); }
.footer-contact { display: flex; flex-direction: column; gap: 10px; }
.footer-contact a {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-decoration: none;
  transition: color .2s;
}
.footer-contact a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 36px;
  display: flex;
  justify-content: flex-end;
}
.footer-bottom span {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* ========================
   17. REVEAL ANIMATIONS
   ======================== */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}
/* No-JS / reduced-motion fallback */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ========================
   18. RESPONSIVE
   ======================== */

/* Tablet / Mobile nav */
@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .nav-links.open { max-height: 80svh; overflow-y: auto; }
  .nav-link { padding: 13px 24px; border-bottom: 1px solid var(--border); }
  .nav-burger { display: flex; }

  /* Mobile dropdown always visible */
  .nav-has-dropdown { width: 100%; }
  .nav-dropdown {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    background: none;
    border: none;
    border-left: 1px solid var(--border);
    padding: 6px 0 6px 16px;
    margin: 0 24px 6px;
    min-width: 0;
  }
  .nav-dropdown-link { padding: 8px 0; border-left: none; font-size: 10px; }
  .nav-dropdown-link:hover { padding-left: 6px; }
  .nav-chevron { display: none; }
  .nav-has-dropdown > .nav-link { border-bottom: none; }
}

@media (max-width: 860px) {
  :root { --section-v: 72px; }
  .section-grid { grid-template-columns: 1fr; gap: 14px 0; }
  .method-item { grid-template-columns: 1fr; gap: 14px 0; padding: 40px 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 36px; padding-bottom: 48px; }
  .footer-bottom { justify-content: flex-start; padding-left: 0; }
  .page-hero { padding: calc(var(--nav-h) + 52px) 0 52px; }
  .hero { padding: calc(var(--nav-h) + 52px) 20px 72px; }
}

@media (max-width: 620px) {
  :root { --section-v: 56px; }
  .container { padding: 0 20px; }
  .cards-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .formats { grid-template-columns: 1fr; }
  .footer-bottom { padding: 16px 0; }
}

/* 4-col cards on wide screens */
@media (min-width: 1100px) {
  .cards-grid { grid-template-columns: repeat(4, 1fr); }
}