/* =========================================================
   ARVIA media — agence web & contenus visuels
   Hautes-Alpes · PACA
   Playfair Display bold (titres) + DM Sans (corps)
   Palette : crème / bleu nuit #1a1635 / accent #5b4fcf
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@700&family=DM+Sans:wght@400;500;600&display=swap');

@font-face {
  font-family: 'Aileron';
  src: url('../fonts/Aileron.woff2') format('woff2'),
       url('../fonts/Aileron.woff')  format('woff');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Palette */
  --paper:        #f5f4f0;
  --paper-soft:   #ecebe6;
  --paper-deep:   #e0dfd8;
  --ink:          #1a1635;
  --ink-soft:     #2e2a50;
  --ink-dim:      #6e6a8a;
  --ink-line:     #d0cee8;
  --line-soft:    #e3e2dc;
  --accent:       #5b4fcf;
  --accent-light: #a594f9;
  --accent-dim:   rgba(91,79,207,0.12);
  --dark:         #1a1635;
  --dark-2:       #231e48;
  --warn:         #c64926;

  /* Radii */
  --radius-sm: 2px;
  --radius:    6px;
  --radius-pill: 999px;

  /* Easings */
  --ease:     cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --rail:             240px;
  --pad-x:            clamp(20px, 4vw, 56px);
  --pad-section:      clamp(80px, 9vw, 160px);
  --container-narrow: 980px;

  /* Fonts */
  --display: 'Playfair Display', Georgia, serif;
  --sans:    'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:    ui-monospace, SFMono-Regular, monospace;
  --logo:    'Aileron', 'DM Sans', sans-serif;

  /* Type scale */
  --size-hero:    clamp(3rem, 1rem + 7vw, 8rem);
  --size-display: clamp(2.4rem, 1.4rem + 4.6vw, 5.6rem);
  --size-h1:      clamp(2rem, 1.3rem + 2.8vw, 3.6rem);
  --size-h2:      clamp(1.6rem, 1.2rem + 1.8vw, 2.6rem);
  --size-h3:      clamp(1.2rem, 1rem + 0.5vw, 1.4rem);
  --size-body:    clamp(1rem, 0.95rem + 0.2vw, 1.06rem);
  --size-small:   0.85rem;
  --size-eyebrow: 0.78rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--size-body);
  line-height: 1.55;
  color: var(--ink-soft);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color 0.2s var(--ease), opacity 0.2s var(--ease); }

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
}
h1 { font-size: var(--size-h1); }
h2 { font-size: var(--size-h2); }
h3 { font-size: var(--size-h3); line-height: 1.2; letter-spacing: -0.01em; }
p  { margin: 0 0 1em; }

::selection { background: var(--accent); color: #fff; }

/* ─── utilitaires ─── */
.eyebrow {
  font-family: var(--mono);
  font-size: var(--size-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  font-weight: 500;
}
.eyebrow .dot {
  display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; background: var(--accent);
  margin-right: 8px; vertical-align: 2px;
}
.accent-text { color: var(--accent); }

/* ─── shell — rail gauche + contenu droit ─── */
.shell {
  display: grid;
  grid-template-columns: var(--rail) 1fr;
  min-height: 100vh;
  position: relative;
}

/* ─── rail ─── */
.rail {
  position: sticky; top: 0;
  height: 100vh;
  display: flex; flex-direction: column;
  padding: 28px 24px;
  border-right: 1px solid var(--ink-line);
  background: var(--paper);
  z-index: 40;
}

.rail-brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--logo);
  font-weight: normal;
  font-size: 1.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
}
.rail-brand-mark {
  width: 32px; height: 32px;
  background: var(--accent);
  color: #fff;
  display: grid; place-items: center;
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
}
.rail-brand-sub {
  display: block;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-top: 2px;
  font-weight: 400;
}

.rail-nav {
  margin-top: 48px;
  display: flex; flex-direction: column; gap: 2px;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 500;
}
.rail-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 10px;
  border-radius: var(--radius-sm);
  color: var(--ink-dim);
}
.rail-nav a:hover { color: var(--accent); background: var(--accent-dim); }
.rail-nav a.active { color: var(--accent); }
.rail-nav a.active::after {
  content: ""; margin-left: auto;
  width: 6px; height: 6px;
  background: var(--accent); border-radius: 50%;
}

.rail-divider {
  margin: 16px 0;
  border: none;
  border-top: 1px solid var(--ink-line);
}

.rail-foot {
  margin-top: auto;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
  display: flex; flex-direction: column; gap: 14px;
}
.rail-foot .meta-row { display: flex; justify-content: space-between; align-items: center; }
.rail-status {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--ink); font-weight: 500;
}
.rail-status::before {
  content: ""; width: 6px; height: 6px;
  background: #2a9d3e; border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(42,157,62,0.18);
}
.rail-contact a {
  display: block; color: var(--ink-dim);
  font-size: 0.68rem; letter-spacing: 0.04em;
  padding: 2px 0;
}
.rail-contact a:hover { color: var(--accent); }

/* ─── topbar mobile ─── */
.topbar {
  display: none;
  position: sticky; top: 0; z-index: 100;
  align-items: center; justify-content: space-between;
  padding: 14px var(--pad-x);
  background: var(--paper);
  border-bottom: 1px solid var(--ink-line);
}
.topbar .brand {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--logo);
  font-weight: normal;
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
}
.topbar .rail-brand-mark { width: 26px; height: 26px; font-size: 0.9rem; }
.menu-toggle {
  font-family: var(--mono); font-size: 0.78rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  background: none; border: 1px solid var(--ink-line);
  color: var(--ink); padding: 8px 14px;
  border-radius: var(--radius-pill); cursor: pointer;
}
.menu-toggle:hover { border-color: var(--accent); color: var(--accent); }

/* ─── menu mobile nav ─── */
.mobile-nav {
  display: none;
  position: fixed; inset: 0; z-index: 200;
  background: var(--dark);
  flex-direction: column;
  padding: 32px var(--pad-x);
  gap: 8px;
}
.mobile-nav.open { display: flex; }
.mobile-close {
  font-family: var(--mono); font-size: 0.78rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  background: none; border: none;
  color: var(--accent-light); cursor: pointer;
  text-align: left; padding: 0; margin-bottom: 32px;
}
.mobile-nav a {
  font-family: var(--display);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 600; color: #fff;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.mobile-nav a:hover { color: var(--accent-light); }
.mobile-nav .mobile-contact {
  margin-top: auto;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.06em;
}

/* ─── boutons ─── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sans); font-size: 0.92rem;
  font-weight: 600; padding: 13px 24px;
  border-radius: var(--radius-pill);
  transition: all 0.2s var(--ease);
  cursor: pointer; border: none;
  letter-spacing: 0.01em;
}
.btn .arrow { transition: transform 0.2s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn-ink {
  background: var(--ink); color: #fff;
}
.btn-ink:hover { background: var(--accent); color: #fff; }

.btn-accent {
  background: var(--accent); color: #fff;
}
.btn-accent:hover { background: var(--ink); color: #fff; }

.btn-ghost {
  background: transparent; color: var(--ink);
  border: 1px solid var(--ink-line);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn-ghost-light {
  background: transparent; color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-ghost-light:hover { border-color: var(--accent-light); color: var(--accent-light); }

.arrow-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--sans); font-size: 0.88rem;
  font-weight: 600; color: var(--accent);
  transition: gap 0.2s var(--ease);
}
.arrow-link:hover { gap: 10px; }

/* ─── contenu principal ─── */
.content { min-width: 0; }
main section {
  padding: clamp(64px, 9vw, 120px) var(--pad-x);
  border-bottom: 1px solid var(--ink-line);
}
main section:last-child { border-bottom: none; }
.hero { border-bottom: none; }

/* ─── section header ─── */
.section-head {
  margin-bottom: clamp(40px, 6vw, 72px);
}
.section-head h2 { margin: 12px 0 16px; }
.section-head .lede {
  max-width: 56ch;
  font-size: 1.08rem;
  color: var(--ink-dim);
  line-height: 1.6;
}

/* ─── hero ─── */
.hero {
  padding: clamp(64px, 9vw, 120px) var(--pad-x) clamp(48px, 6vw, 80px);
}
.hero-meta {
  display: grid; grid-template-columns: repeat(4, auto);
  justify-content: start; gap: 32px;
  font-family: var(--mono); font-size: 0.74rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-dim); margin-bottom: 40px;
}
.accent-tag {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--accent); font-weight: 500;
}
.accent-tag::before {
  content: ""; width: 6px; height: 6px;
  background: var(--accent); border-radius: 50%;
}

.hero-headline {
  font-family: var(--display);
  font-size: var(--size-hero);
  font-weight: 600;
  color: var(--ink);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin: 0 0 40px;
  max-width: 16ch;
}

.hero-bottom {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 48px; align-items: end;
}
.hero-pitch {
  font-size: 1.12rem; line-height: 1.6;
  color: var(--ink-soft); margin: 0; max-width: 46ch;
}
.hero-actions {
  display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: flex-end;
}

/* ─── marquee ─── */
.hero-marquee {
  margin-top: 56px;
  overflow: hidden;
  border-top: 1px solid var(--ink-line);
  border-bottom: 1px solid var(--ink-line);
  padding: 14px 0 12px;
}
.marquee-track {
  display: flex; gap: 48px;
  white-space: nowrap;
  animation: marquee 28s linear infinite;
  font-family: var(--mono); font-size: 0.78rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-dim);
  line-height: 1;
  align-items: center;
}
.marquee-track span { flex-shrink: 0; display: inline-flex; align-items: center; }
.marquee-track span::before { content: "·"; margin-right: 48px; color: var(--accent); }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ─── services list ─── */
.services-list { display: grid; gap: 0; }
.services-list .row {
  display: grid;
  grid-template-columns: 72px 1fr 1.8fr auto;
  gap: 32px; padding: 32px 0;
  border-top: 1px solid var(--ink-line);
  align-items: center;
  transition: background 0.2s var(--ease);
  border-radius: var(--radius-sm);
}
.services-list .row:hover { background: var(--accent-dim); padding-left: 12px; padding-right: 12px; }
.services-list .row .num {
  font-family: var(--mono); color: var(--ink-dim);
  font-size: 0.8rem; letter-spacing: 0.04em;
}
.services-list .row h3 { font-size: 1.3rem; color: var(--ink); }
.services-list .row p { color: var(--ink-dim); margin: 0; font-size: 0.96rem; max-width: 48ch; }
.services-list .row .arrow { color: var(--accent); font-size: 1.2rem; }

/* ─── grille services (cards) ─── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--ink-line);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius);
  overflow: hidden;
}
.service-card {
  background: var(--paper);
  padding: 32px 28px;
  display: flex; flex-direction: column; gap: 14px;
  transition: background 0.2s var(--ease);
}
.service-card:hover { background: var(--accent-dim); }
.service-card .icon {
  width: 40px; height: 40px;
  background: var(--accent-dim);
  border-radius: var(--radius);
  display: grid; place-items: center;
  color: var(--accent); font-size: 1.1rem;
}
.service-card h3 { font-size: 1.15rem; color: var(--ink); margin: 0; }
.service-card p { color: var(--ink-dim); margin: 0; font-size: 0.94rem; line-height: 1.55; }

/* ─── section sombre ─── */
.section-dark {
  background: var(--dark);
  border-bottom: none !important;
}
.section-dark .eyebrow { color: var(--accent-light); }
.section-dark .eyebrow .dot { background: var(--accent-light); }
.section-dark h2 { color: #fff; }
.section-dark p { color: rgba(255,255,255,0.65); }
.section-dark .section-head .lede { color: rgba(255,255,255,0.55); }

/* ─── process steps ─── */
.process-steps {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 2px; background: rgba(255,255,255,0.08);
  border-radius: var(--radius); overflow: hidden;
  margin-top: 48px;
}
.process-step {
  padding: 32px 24px;
  background: var(--dark-2);
  display: flex; flex-direction: column; gap: 16px;
}
.process-step .step-num {
  font-family: var(--mono); font-size: 0.72rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent-light);
}
.process-step h3 { font-size: 1.1rem; color: #fff; }
.process-step p { font-size: 0.9rem; color: rgba(255,255,255,0.55); margin: 0; line-height: 1.5; }

/* ─── manifesto ─── */
.manifesto { background: var(--dark); }
.manifesto .grid {
  display: grid; grid-template-columns: 1fr 1.2fr;
  gap: 80px; align-items: start;
}
.manifesto h2 { color: #fff; font-size: clamp(1.8rem, 3.5vw, 3rem); line-height: 1.05; }
.manifesto p { color: rgba(255,255,255,0.6); line-height: 1.7; }
.manifesto .accent-light { color: var(--accent-light); }
.signature {
  margin-top: 32px;
  font-family: var(--mono); font-size: 0.74rem;
  letter-spacing: 0.06em; color: rgba(255,255,255,0.35);
  display: flex; flex-direction: column; gap: 4px;
}

/* ─── CTA band ─── */
.cta-band {
  background: var(--accent);
  border-bottom: none !important;
}
.cta-band .inner {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 48px; align-items: center;
}
.cta-band h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.8rem); }
.cta-band h2 em { font-style: italic; opacity: 0.85; }
.cta-band .right p { color: rgba(255,255,255,0.8); font-size: 1rem; margin: 0 0 24px; }
.cta-band .meta {
  margin-top: 16px;
  font-family: var(--mono); font-size: 0.78rem;
  letter-spacing: 0.06em; color: rgba(255,255,255,0.6);
  display: flex; flex-direction: column; gap: 4px;
}

/* ─── lien cross-service ─── */
.crosslink {
  display: flex; align-items: center; gap: 20px;
  padding: 24px 28px;
  background: var(--accent-dim);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius);
  margin-top: 48px;
  transition: border-color 0.2s var(--ease);
}
.crosslink:hover { border-color: var(--accent); }
.crosslink .cl-label {
  font-family: var(--mono); font-size: 0.72rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-dim); margin-bottom: 4px;
}
.crosslink .cl-title {
  font-family: var(--display); font-size: 1.3rem;
  color: var(--ink); font-weight: 600;
}
.crosslink .cl-arrow {
  margin-left: auto; color: var(--accent); font-size: 1.4rem;
  transition: transform 0.2s var(--ease);
}
.crosslink:hover .cl-arrow { transform: translateX(6px); }

/* ─── footer ─── */
.site-footer {
  background: var(--dark);
  padding: clamp(48px, 7vw, 96px) var(--pad-x) 32px;
}
.site-footer .top {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 48px; padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.site-footer .brand-block .mark {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--logo);
  font-weight: normal;
  font-size: 1.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff; margin-bottom: 14px;
}
.site-footer .brand-block .badge {
  width: 28px; height: 28px;
  background: var(--accent); color: #fff;
  display: grid; place-items: center;
  font-style: italic; font-family: var(--display);
  font-size: 1rem; font-weight: 700;
  border-radius: var(--radius-sm);
}
.site-footer .col h4 {
  font-family: var(--mono); font-size: 0.72rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: rgba(255,255,255,0.35); margin-bottom: 16px;
  font-weight: 500;
}
.site-footer .col a {
  display: block; color: rgba(255,255,255,0.6);
  font-size: 0.9rem; padding: 4px 0;
}
.site-footer .col a:hover { color: var(--accent-light); }
.site-footer .bottom {
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: 16px; padding-top: 24px;
  font-family: var(--mono); font-size: 0.72rem;
  letter-spacing: 0.06em; color: rgba(255,255,255,0.25);
}
.site-footer .bottom .center { text-align: center; }
.site-footer .bottom .right  { text-align: right; }

/* ─── clients marquee ─── */
.clients-marquee {
  overflow: hidden;
  padding: 20px 0;
  border-top: 1px solid var(--ink-line);
  border-bottom: 1px solid var(--ink-line);
}
.clients-marquee .track {
  display: flex; gap: 56px; white-space: nowrap;
  animation: marquee 32s linear infinite;
  font-family: var(--mono); font-size: 0.76rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-dim);
}
.clients-marquee .track span { flex-shrink: 0; }

/* ─── work strip ─── */
.work-strip {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr;
  gap: 24px;
}
.work-card {
  display: flex; flex-direction: column; gap: 16px;
}
.work-card .img-wrap {
  aspect-ratio: 4/3;
  background: var(--paper-soft);
  overflow: hidden; border-radius: var(--radius);
}
.work-card .img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.work-card:hover .img-wrap img { transform: scale(1.04); }
.work-card .body { display: flex; flex-direction: column; gap: 8px; }
.work-card .meta {
  font-family: var(--mono); font-size: 0.72rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-dim); display: flex; gap: 10px;
}
.work-card h3 { font-size: 1.2rem; color: var(--ink); }
.work-card p { color: var(--ink-dim); margin: 0; font-size: 0.93rem; }
.work-card.lg .img-wrap { aspect-ratio: 16/9; }

/* ─── reveal animation ─── */
.reveal {
  opacity: 0; transform: translateY(18px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ─── responsive ─── */
@media (max-width: 1024px) {
  :root { --rail: 200px; }
  .work-strip { grid-template-columns: 1fr 1fr; }
  .work-strip .work-card.lg { grid-column: 1 / -1; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .manifesto .grid { gap: 40px; }
}

@media (max-width: 768px) {
  .shell { grid-template-columns: 1fr; }
  .rail  { display: none; }
  .topbar { display: flex; }
  .hero-meta { grid-template-columns: 1fr 1fr; }
  .hero-meta > :nth-child(3),
  .hero-meta > :nth-child(4) { display: none; }
  .hero-bottom { grid-template-columns: 1fr; gap: 32px; }
  .hero-actions { justify-content: flex-start; }
  .work-strip { grid-template-columns: 1fr; }
  .work-strip .work-card.lg { grid-column: auto; }
  .services-list .row { grid-template-columns: 1fr; gap: 8px; padding: 24px 0; }
  .services-list .row .arrow { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .manifesto .grid { grid-template-columns: 1fr; }
  .cta-band .inner { grid-template-columns: 1fr; gap: 32px; }
  .site-footer .top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .site-footer .bottom { grid-template-columns: 1fr; gap: 8px; }
  .site-footer .bottom > * { text-align: left !important; }
  section { padding: clamp(48px, 10vw, 80px) var(--pad-x); }
  .crosslink { flex-direction: column; align-items: flex-start; gap: 12px; }
  .crosslink .cl-arrow { margin-left: 0; }
}