/* =========================================================
   ÉPURE : Design system
   Architect-led furniture house. Static, dependency-free.
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* Palette: warm neutrals, architectural */
  --color-bg: #f6f3ee;
  --color-bg-alt: #efeae1;
  --color-surface: #ffffff;
  --color-ink: #1c1b19;
  --color-ink-soft: #4a4843;
  --color-muted: #8a857c;
  --color-line: #ddd6ca;
  --color-accent: #b4633a;     /* terracotta / clay */
  --color-accent-soft: #cf8b66;
  --color-sand: #cabfa9;

  /* Typography */
  --font-display: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Spacing scale (4px base) */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 16px;
  --s-4: 24px;
  --s-5: 32px;
  --s-6: 48px;
  --s-7: 64px;
  --s-8: 96px;
  --s-9: 144px;

  /* Layout */
  --maxw: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 2px;
  --radius-lg: 6px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.7s;

  --shadow-soft: 0 18px 50px -24px rgba(28, 27, 25, 0.35);
  --shadow-card: 0 1px 0 rgba(28,27,25,0.04), 0 24px 60px -36px rgba(28,27,25,0.4);
}

[data-theme="dark"] {
  --color-bg: #15140f;
  --color-bg-alt: #1c1a14;
  --color-surface: #211f18;
  --color-ink: #f1ece1;
  --color-ink-soft: #cfc7b7;
  --color-muted: #938c7d;
  --color-line: #34302a;
  --color-accent: #d2895f;
  --color-accent-soft: #e2a880;
  --color-sand: #5a5240;
  --shadow-soft: 0 18px 50px -24px rgba(0, 0, 0, 0.7);
  --shadow-card: 0 1px 0 rgba(0,0,0,0.4), 0 30px 70px -40px rgba(0,0,0,0.8);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 0.5s var(--ease), color 0.5s var(--ease);
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul { list-style: none; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 500; line-height: 1.05; letter-spacing: -0.01em; }
.eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
}
.lead { font-size: clamp(18px, 2.2vw, 22px); color: var(--color-ink-soft); line-height: 1.55; }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(64px, 11vw, 144px); }
.section--tight { padding-block: clamp(48px, 8vw, 96px); }
.bg-alt { background: var(--color-bg-alt); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 30px;
  font-size: 14px; font-weight: 600; letter-spacing: 0.04em;
  border-radius: 100px;
  position: relative;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
  will-change: transform;
}
.btn--primary { background: var(--color-ink); color: var(--color-bg); }
.btn--primary:hover { background: var(--color-accent); color: #fff; }
.btn--ghost { border: 1px solid var(--color-line); color: var(--color-ink); }
.btn--ghost:hover { border-color: var(--color-ink); }
.btn .arrow { transition: transform 0.3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Header / Nav ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  padding-block: 20px;
  transition: background 0.4s var(--ease), padding 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.header.is-scrolled {
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  padding-block: 12px;
  box-shadow: 0 1px 0 var(--color-line);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); }
.brand {
  font-family: var(--font-display);
  font-size: 24px; font-weight: 600; letter-spacing: 0.18em;
  text-transform: uppercase;
}
.brand span { color: var(--color-accent); }
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a { font-size: 14px; color: var(--color-ink-soft); position: relative; transition: color 0.3s; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -5px; height: 1px; width: 0;
  background: var(--color-accent); transition: width 0.35s var(--ease);
}
.nav-links a:hover { color: var(--color-ink); }
.nav-links a:hover::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 14px; }

.theme-toggle {
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--color-line);
  display: grid; place-items: center;
  transition: border-color 0.3s, transform 0.4s var(--ease);
}
.theme-toggle:hover { border-color: var(--color-ink); transform: rotate(18deg); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.menu-btn { display: none; width: 40px; height: 40px; }
.menu-btn span { display: block; height: 1.5px; width: 22px; background: var(--color-ink); margin: 5px auto; transition: transform 0.3s var(--ease), opacity 0.3s; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; padding-top: 100px; overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(24px, 5vw, 80px); align-items: center; width: 100%; }
.hero__title { font-size: clamp(46px, 8.4vw, 116px); line-height: 0.95; letter-spacing: -0.02em; }
.hero__title em { font-style: italic; color: var(--color-accent); }
.hero__lead { margin-top: var(--s-4); max-width: 46ch; }
.hero__cta { margin-top: var(--s-6); display: flex; gap: 16px; flex-wrap: wrap; }
.hero__art { position: relative; }
.hero__art svg { width: 100%; height: auto; filter: drop-shadow(var(--shadow-soft)); }
.hero__meta { display: flex; gap: 40px; margin-top: var(--s-7); flex-wrap: wrap; }
.hero__meta .num { font-family: var(--font-display); font-size: 40px; line-height: 1; }
.hero__meta .lbl { font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-muted); margin-top: 6px; }

.scroll-cue {
  position: absolute; left: var(--gutter); bottom: 28px;
  display: flex; align-items: center; gap: 12px;
  font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--color-muted);
}
.scroll-cue .line { width: 46px; height: 1px; background: var(--color-line); position: relative; overflow: hidden; }
.scroll-cue .line::after { content: ""; position: absolute; inset: 0; width: 40%; background: var(--color-accent); animation: cue 2.4s var(--ease) infinite; }
@keyframes cue { 0% { transform: translateX(-100%); } 60%, 100% { transform: translateX(260%); } }

/* ---------- Section headers ---------- */
.shead { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-5); align-items: end; margin-bottom: var(--s-7); }
.shead h2 { font-size: clamp(34px, 5vw, 62px); }
.shead__intro { color: var(--color-ink-soft); max-width: 44ch; justify-self: end; }

/* ---------- Manifesto ---------- */
.manifesto p { font-family: var(--font-display); font-size: clamp(26px, 4vw, 50px); line-height: 1.18; max-width: 22ch; letter-spacing: -0.01em; }
.manifesto p span { color: var(--color-muted); }
.manifesto .sign { margin-top: var(--s-6); font-size: 14px; letter-spacing: 0.05em; color: var(--color-ink-soft); }

/* ---------- Collections ---------- */
.collections { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--s-4); }
.col-card {
  position: relative; overflow: hidden; border-radius: var(--radius-lg);
  background: var(--color-surface); border: 1px solid var(--color-line);
  box-shadow: var(--shadow-card);
  display: flex; flex-direction: column; min-height: 360px;
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease), border-color 0.5s;
}
.col-card:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--color-accent) 40%, var(--color-line)); }
.col-card__media { position: relative; flex: 1; overflow: hidden; background: var(--color-bg-alt); }
.col-card__media svg { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.col-card:hover .col-card__media svg { transform: scale(1.05); }
.col-card__body { padding: var(--s-4); display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; }
.col-card__title { font-size: 26px; }
.col-card__count { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-muted); }
.col-card__cta { width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--color-line); display: grid; place-items: center; transition: background 0.3s, color 0.3s, border-color 0.3s; }
.col-card:hover .col-card__cta { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
.col-card__cta svg { width: 16px; height: 16px; }

.col-card.span-7 { grid-column: span 7; }
.col-card.span-5 { grid-column: span 5; }
.col-card.span-4 { grid-column: span 4; }
.col-card.span-8 { grid-column: span 8; }
.col-card.span-6 { grid-column: span 6; }
.col-card.tall { min-height: 480px; }

.tag {
  position: absolute; top: 16px; left: 16px; z-index: 2;
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 6px 12px; border-radius: 100px;
  background: color-mix(in srgb, var(--color-surface) 80%, transparent);
  backdrop-filter: blur(6px); color: var(--color-ink-soft);
  border: 1px solid var(--color-line);
}

/* ---------- Matières / durabilité ---------- */
.matter { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(32px, 6vw, 90px); align-items: center; }
.matter__art svg { width: 100%; filter: drop-shadow(var(--shadow-soft)); }
.feature-list { display: grid; gap: var(--s-4); margin-top: var(--s-5); }
.feature {
  display: grid; grid-template-columns: 44px 1fr; gap: var(--s-3); align-items: start;
  padding-bottom: var(--s-4); border-bottom: 1px solid var(--color-line);
}
.feature__ic { width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--color-line); display: grid; place-items: center; color: var(--color-accent); }
.feature__ic svg { width: 20px; height: 20px; }
.feature h3 { font-size: 21px; margin-bottom: 4px; }
.feature p { font-size: 15px; color: var(--color-ink-soft); }

/* ---------- À propos ---------- */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 90px); align-items: center; }
.about__art svg { width: 100%; filter: drop-shadow(var(--shadow-soft)); border-radius: var(--radius-lg); }
.about p + p { margin-top: var(--s-3); }
.about .quote { font-family: var(--font-display); font-size: clamp(22px, 3vw, 32px); line-height: 1.3; margin-top: var(--s-5); padding-left: var(--s-4); border-left: 2px solid var(--color-accent); }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-4); margin-top: var(--s-7); }
.stat { border-top: 1px solid var(--color-line); padding-top: var(--s-3); }
.stat .num { font-family: var(--font-display); font-size: clamp(40px, 6vw, 68px); line-height: 1; }
.stat .lbl { font-size: 13px; color: var(--color-muted); margin-top: 8px; }

/* ---------- Showroom / contact ---------- */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); }
.contact__info h2 { font-size: clamp(34px, 5vw, 60px); }
.info-block { margin-top: var(--s-5); }
.info-block .k { font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-muted); }
.info-block .v { font-size: 18px; margin-top: 4px; }
.info-block .v a:hover { color: var(--color-accent); }

.form { display: grid; gap: var(--s-3); }
.field { display: grid; gap: 6px; }
.field label { font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-muted); }
.field input, .field textarea, .field select {
  font: inherit; font-size: 16px; color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid var(--color-line); border-radius: var(--radius);
  padding: 13px 15px; transition: border-color 0.3s, box-shadow 0.3s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 18%, transparent);
}
.field textarea { resize: vertical; min-height: 110px; }
.form .btn--primary { justify-content: center; margin-top: 6px; }
.form__note { font-size: 13px; color: var(--color-muted); }
.form__ok { display: none; font-size: 15px; color: var(--color-accent); }
.form.is-sent .form__ok { display: block; }

/* ---------- Footer ---------- */
.footer { padding-block: var(--s-8) var(--s-5); border-top: 1px solid var(--color-line); }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--s-5); }
.footer h4 { font-family: var(--font-body); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-muted); margin-bottom: var(--s-3); font-weight: 600; }
.footer .brand { font-size: 30px; }
.footer__tag { color: var(--color-ink-soft); margin-top: var(--s-3); max-width: 30ch; font-size: 15px; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { color: var(--color-ink-soft); font-size: 15px; transition: color 0.3s; }
.footer ul a:hover { color: var(--color-accent); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; gap: var(--s-3); margin-top: var(--s-7); padding-top: var(--s-4); border-top: 1px solid var(--color-line); font-size: 13px; color: var(--color-muted); flex-wrap: wrap; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* line-by-line title reveal */
.line-mask { overflow: hidden; display: block; }
.line-mask > span { display: block; transform: translateY(110%); transition: transform 1s var(--ease); }
.is-in .line-mask > span { transform: none; }
.line-mask:nth-child(2) > span { transition-delay: 0.08s; }
.line-mask:nth-child(3) > span { transition-delay: 0.16s; }

/* grain overlay */
.grain { position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: 0.4; mix-blend-mode: multiply; }
[data-theme="dark"] .grain { mix-blend-mode: screen; opacity: 0.18; }

/* custom cursor (desktop pointer only) */
.cursor-dot, .cursor-ring { position: fixed; top: 0; left: 0; z-index: 9999; pointer-events: none; border-radius: 50%; }
.cursor-dot { width: 6px; height: 6px; background: var(--color-accent); transform: translate(-50%, -50%); }
.cursor-ring { width: 34px; height: 34px; border: 1px solid color-mix(in srgb, var(--color-ink) 40%, transparent); transform: translate(-50%, -50%); transition: width 0.25s var(--ease), height 0.25s var(--ease), background 0.25s, border-color 0.25s; }
.cursor-ring.is-hover { width: 56px; height: 56px; background: color-mix(in srgb, var(--color-accent) 10%, transparent); border-color: var(--color-accent); }
@media (hover: none), (pointer: coarse) { .cursor-dot, .cursor-ring { display: none; } }

/* ---------- Mobile drawer ---------- */
.drawer {
  position: fixed; inset: 0; z-index: 99; background: var(--color-bg);
  transform: translateY(-100%); transition: transform 0.5s var(--ease);
  display: flex; flex-direction: column; justify-content: center; padding: var(--gutter);
}
.drawer.is-open { transform: none; }
.drawer a { font-family: var(--font-display); font-size: 40px; padding: 10px 0; }
.drawer a:hover { color: var(--color-accent); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero__grid, .matter, .about, .contact { grid-template-columns: 1fr; }
  .hero { padding-top: 120px; min-height: auto; }
  .hero__art { order: -1; max-width: 460px; }
  .shead { grid-template-columns: 1fr; }
  .shead__intro { justify-self: start; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .col-card.span-7, .col-card.span-5, .col-card.span-4, .col-card.span-8, .col-card.span-6 { grid-column: span 12; }
}
@media (max-width: 760px) {
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .collections { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; gap: var(--s-3); }
  .footer__grid { grid-template-columns: 1fr; gap: var(--s-4); }
  body { font-size: 16px; }
}