/* ============================================================
   PLATINE.INC — Design System
   Brand: platinum / metallic / dense / precious / monochrome.
   Each product injects its own colour world (see Schwa block).
   ============================================================ */

/* ----- Fonts ----- */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..700;1,9..144,300..600&family=Space+Grotesk:wght@300..700&display=swap');

/* ============================================================
   1. TOKENS
   ============================================================ */
:root {
  /* Platinum brand scale (dark) */
  --void:      #08080A;
  --carbon:    #0E0E11;
  --graphite:  #16161A;
  --slate:     #1E1E24;
  --steel:     #2A2A32;
  --steel-2:   #3A3A44;

  /* Platinum lights */
  --platinum:  #E7E6E4;   /* true platinum */
  --silver:    #C9C9CF;
  --pewter:    #9A9AA3;
  --ash:       #74747E;
  --ash-dim:   #55555E;

  /* Functional */
  --bg:        var(--void);
  --surface:   var(--carbon);
  --ink:       var(--platinum);
  --ink-soft:  var(--pewter);
  --line:      rgba(231,230,228,0.10);
  --line-2:    rgba(231,230,228,0.06);

  /* Metallic gradients */
  --metal: linear-gradient(177deg,
              #f6f6f8 0%, #cdcdd4 16%, #8d8d96 38%,
              #ededf1 54%, #b3b3bc 72%, #6f6f78 100%);
  --metal-sweep: linear-gradient(110deg,
              #6f6f78 0%, #b3b3bc 30%, #ffffff 48%,
              #b3b3bc 66%, #6f6f78 100%);
  --metal-edge: linear-gradient(90deg,
              transparent, rgba(231,230,228,0.55), transparent);

  /* Schwa product palette (echo of the app) */
  --sw-navy:   #20203D;
  --sw-purple: #8E80D8;
  --sw-teal:   #4FC5BC;
  --sw-amber:  #F6B945;
  --sw-coral:  #F47C7C;
  --sw-cream:  #FBFAF8;
  --sw-paper:  #FFFFFF;

  /* Type scale (fluid) */
  --step--1: clamp(0.78rem, 0.74rem + 0.2vw, 0.86rem);
  --step-0:  clamp(0.95rem, 0.90rem + 0.25vw, 1.06rem);
  --step-1:  clamp(1.18rem, 1.05rem + 0.6vw, 1.5rem);
  --step-2:  clamp(1.5rem, 1.25rem + 1.2vw, 2.2rem);
  --step-3:  clamp(2rem, 1.5rem + 2.4vw, 3.4rem);
  --step-4:  clamp(2.8rem, 1.9rem + 4.4vw, 5.6rem);
  --step-5:  clamp(3.6rem, 2.1rem + 7.2vw, 8.5rem);

  /* Spacing / layout */
  --gutter: clamp(1.25rem, 0.8rem + 2.2vw, 3rem);
  --maxw: 1240px;
  --radius: 18px;
  --radius-lg: 26px;

  --serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --sans: 'Space Grotesk', system-ui, -apple-system, sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ============================================================
   2. RESET / BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 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;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
ul { list-style: none; padding: 0; }
:focus-visible { outline: 2px solid var(--silver); outline-offset: 3px; border-radius: 4px; }
::selection { background: rgba(231,230,228,0.22); color: #fff; }

/* Grain + vignette atmosphere */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 1;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(231,230,228,0.06), transparent 55%),
    radial-gradient(100% 100% at 50% 120%, rgba(8,8,10,0.6), transparent 60%);
  mix-blend-mode: screen;
}
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 2; opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================================
   3. LAYOUT HELPERS
   ============================================================ */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { position: relative; padding-block: clamp(4.5rem, 3rem + 7vw, 9rem); z-index: 3; }
.section--tight { padding-block: clamp(3rem, 2rem + 4vw, 5rem); }
.hairline { height: 1px; border: 0; background: var(--metal-edge); opacity: 0.5; }

.eyebrow {
  font-size: var(--step--1);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ash);
  display: inline-flex; align-items: center; gap: 0.7em;
  font-weight: 500;
}
.eyebrow::before {
  content: ""; width: 28px; height: 1px;
  background: var(--metal-edge); display: inline-block;
}

/* Metallic text */
.metal {
  background: var(--metal);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  background-size: 100% 140%;
}

/* ============================================================
   4. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; line-height: 1.04; letter-spacing: -0.015em; }
.display {
  font-family: var(--serif);
  font-size: var(--step-5);
  font-weight: 350;
  line-height: 0.96;
  letter-spacing: -0.02em;
}
.h-sec { font-size: var(--step-3); font-weight: 380; }
.lead { font-size: var(--step-1); color: var(--ink-soft); font-weight: 300; max-width: 56ch; }
.italic { font-style: italic; }
.muted { color: var(--ink-soft); }

/* ============================================================
   5. INTRO OVERLAY (GSAP-driven)
   ============================================================ */
.intro {
  position: fixed; inset: 0; z-index: 1000;
  display: grid; place-items: center;
  background: var(--void);
  overflow: hidden;
}
.intro__inner { text-align: center; position: relative; }
.intro__mark {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 1.5rem + 6vw, 6rem);
  font-weight: 350; letter-spacing: -0.02em;
  position: relative;
  background: var(--metal-sweep);
  background-size: 220% 100%;
  background-position: 100% 0;
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.intro__mark .dot { color: var(--silver); -webkit-text-fill-color: var(--silver); }
.intro__line {
  width: min(420px, 70vw); height: 1px; margin: 1.4rem auto 0;
  background: var(--metal-edge);
  transform: scaleX(0); transform-origin: center;
}
.intro__tag {
  margin-top: 1.1rem;
  font-size: var(--step--1); letter-spacing: 0.42em;
  text-transform: uppercase; color: var(--ash);
  opacity: 0;
}
.intro__skip {
  position: absolute; bottom: 2rem; right: 2rem;
  font-size: var(--step--1); letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ash); transition: color .3s;
}
.intro__skip:hover { color: var(--silver); }
body.intro-done .intro { display: none; }
html.no-intro .intro { display: none; }

/* ============================================================
   6. NAV
   ============================================================ */
.nav {
  position: fixed; top: 0; inset-inline: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem var(--gutter);
  transition: background .4s var(--ease), border-color .4s, padding .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(8,8,10,0.72);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  border-bottom-color: var(--line);
  padding-block: 0.8rem;
}
.brand { display: inline-flex; align-items: baseline; gap: 0.05em; font-family: var(--serif); font-size: 1.18rem; letter-spacing: -0.01em; }
.brand .dot { color: var(--pewter); }
.brand b { font-weight: 500; }
.nav__links { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2.2rem); }
.nav__link {
  font-size: var(--step--1); letter-spacing: 0.06em;
  color: var(--ink-soft); position: relative; padding-block: 0.4rem;
  transition: color .3s;
}
.nav__link::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 0;
  background: var(--silver); transition: width .35s var(--ease);
}
.nav__link:hover { color: var(--ink); }
.nav__link:hover::after, .nav__link[aria-current="page"]::after { width: 100%; }
.nav__link[aria-current="page"] { color: var(--ink); }

/* Lang toggle */
.lang {
  display: inline-flex; align-items: center;
  border: 1px solid var(--line); border-radius: 999px; overflow: hidden;
}
.lang button {
  font-size: var(--step--1); letter-spacing: 0.08em; font-weight: 500;
  padding: 0.34rem 0.66rem; color: var(--ash); transition: color .25s, background .25s;
}
.lang button.is-active { color: var(--void); background: var(--silver); }

/* Burger */
.burger { display: none; flex-direction: column; gap: 5px; padding: 0.4rem; }
.burger span { width: 22px; height: 1.5px; background: var(--silver); transition: .3s var(--ease); }
.nav__mobile { display: none; }

/* ============================================================
   7. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-size: var(--step-0); font-weight: 500; letter-spacing: 0.01em;
  padding: 0.85rem 1.5rem; border-radius: 999px;
  transition: transform .35s var(--ease), background .35s, color .35s, border-color .35s;
  position: relative; overflow: hidden;
}
.btn svg { width: 1.1em; height: 1.1em; }
.btn--metal { background: var(--metal); color: var(--void); background-size: 100% 160%; background-position: 0 0; }
.btn--metal:hover { transform: translateY(-2px); background-position: 0 100%; }
.btn--ghost { border: 1px solid var(--steel-2); color: var(--ink); }
.btn--ghost:hover { border-color: var(--silver); transform: translateY(-2px); }
.btn--lg { padding: 1.05rem 1.9rem; font-size: var(--step-1); }
.btn .arr { transition: transform .35s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* ============================================================
   8. HERO
   ============================================================ */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; padding-top: 8rem; z-index: 3; }
.hero__grid {
  display: grid; gap: clamp(2rem, 4vw, 4rem); align-items: end;
  grid-template-columns: 1.3fr 0.7fr;
}
.hero__title { margin-block: 0.2em 0.5em; }
.hero__title .ln { display: block; overflow: hidden; }
.hero__title .ln > span { display: block; }
.hero__aside { padding-bottom: 0.6rem; }
.hero__aside p { color: var(--ink-soft); font-weight: 300; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2rem; }
.hero__orb {
  position: absolute; z-index: -1; pointer-events: none;
  width: clamp(280px, 40vw, 620px); aspect-ratio: 1; right: -8%; top: 12%;
  background: radial-gradient(circle at 35% 30%, rgba(231,230,228,0.16), rgba(231,230,228,0.02) 42%, transparent 62%);
  filter: blur(8px);
}
.scroll-cue {
  position: absolute; bottom: 2.2rem; left: var(--gutter);
  font-size: var(--step--1); letter-spacing: 0.3em; text-transform: uppercase; color: var(--ash);
  display: flex; align-items: center; gap: 0.8rem;
}
.scroll-cue .bar { width: 1px; height: 40px; background: var(--metal-edge); position: relative; overflow: hidden; }
.scroll-cue .bar::after { content:""; position:absolute; inset:0; background: var(--silver); animation: cue 2.4s var(--ease-in-out) infinite; }
@keyframes cue { 0%{transform:translateY(-100%)} 60%,100%{transform:translateY(100%)} }

/* ============================================================
   9. PROPERTIES MARQUEE (platinum qualities)
   ============================================================ */
.marquee { overflow: hidden; border-block: 1px solid var(--line-2); padding-block: 1.4rem; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee__track { display: flex; gap: 3.5rem; width: max-content; animation: scrollx 38s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item { font-family: var(--serif); font-style: italic; font-size: var(--step-2); color: var(--ash); display: inline-flex; align-items: center; gap: 3.5rem; }
.marquee__item::after { content: "✦"; font-style: normal; font-size: 0.7em; color: var(--steel-2); }
@keyframes scrollx { to { transform: translateX(-50%); } }

/* ============================================================
   10. ESSENCE (platinum philosophy)
   ============================================================ */
.essence__head { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: end; margin-bottom: clamp(2.5rem,4vw,4.5rem); }
.props { display: grid; gap: 1px; background: var(--line-2); border: 1px solid var(--line-2); border-radius: var(--radius-lg); overflow: hidden; }
.props { grid-template-columns: repeat(3, 1fr); }
.prop { background: var(--carbon); padding: clamp(1.6rem,2.5vw,2.6rem); min-height: 240px; display: flex; flex-direction: column; gap: clamp(1.5rem,3vw,2.8rem); transition: background .4s; }
.prop:hover { background: var(--graphite); }
.prop__n { font-family: var(--serif); font-style: italic; color: var(--ash-dim); font-size: var(--step-1); }
.prop h3 { font-size: var(--step-2); margin-bottom: 0.5rem; }
.prop p { color: var(--ink-soft); font-size: var(--step-0); font-weight: 300; }

/* ============================================================
   11. PRODUCTS
   ============================================================ */
.products { display: grid; gap: 1.4rem; grid-template-columns: 1.55fr 1fr; }
.card {
  position: relative; border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--graphite), var(--carbon));
  padding: clamp(1.8rem, 3vw, 3rem); overflow: hidden;
  transition: transform .5s var(--ease), border-color .5s;
}
.card::before {
  content:""; position:absolute; inset:0; border-radius: inherit; padding:1px;
  background: linear-gradient(160deg, rgba(231,230,228,0.25), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity:0; transition: opacity .5s;
}
.card:hover { transform: translateY(-4px); border-color: var(--steel-2); }
.card:hover::before { opacity: 1; }
.card--feature { min-height: 460px; display: flex; flex-direction: column; justify-content: space-between; }
.card__top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.card__badge { font-size: var(--step--1); letter-spacing: 0.2em; text-transform: uppercase; color: var(--ash); border: 1px solid var(--line); padding: 0.3rem 0.8rem; border-radius: 999px; }
.schwa-glyph { font-family: var(--serif); font-size: clamp(4rem, 8vw, 8rem); line-height: 1; color: var(--platinum); }
.card h3 { font-size: var(--step-3); margin-bottom: 0.4rem; }
.card p { color: var(--ink-soft); font-weight: 300; max-width: 46ch; }
.card__foot { display: flex; align-items: center; gap: 1.2rem; margin-top: 1.8rem; flex-wrap: wrap; }
.card--soon { display: flex; flex-direction: column; justify-content: space-between; min-height: 460px; }
.card--soon .schwa-glyph { color: var(--steel-2); }
.soon-dots { display: flex; gap: 0.5rem; }
.soon-dots span { width: 7px; height: 7px; border-radius: 50%; background: var(--steel-2); animation: pulse 1.6s var(--ease-in-out) infinite; }
.soon-dots span:nth-child(2){ animation-delay:.2s } .soon-dots span:nth-child(3){ animation-delay:.4s }
@keyframes pulse { 0%,100%{opacity:.3;transform:scale(.85)} 50%{opacity:1;transform:scale(1)} }

/* ============================================================
   12. CTA STRIP
   ============================================================ */
.cta { text-align: center; }
.cta h2 { font-size: var(--step-4); margin-bottom: 1.2rem; }
.cta .lead { margin-inline: auto; }
.cta__row { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-top: 2.2rem; }

/* ============================================================
   13. FOOTER
   ============================================================ */
.footer { border-top: 1px solid var(--line); padding-block: clamp(3rem,5vw,5rem) 2rem; position: relative; z-index: 3; }
.footer__grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 2.5rem; }
.footer h4 { font-family: var(--sans); font-size: var(--step--1); letter-spacing: 0.22em; text-transform: uppercase; color: var(--ash); margin-bottom: 1.1rem; font-weight: 500; }
.footer__brand .display-sm { font-family: var(--serif); font-size: var(--step-2); }
.footer__brand p { color: var(--ink-soft); font-weight: 300; margin-top: 0.8rem; max-width: 34ch; }
.footer a.fl { display: block; color: var(--ink-soft); padding-block: 0.35rem; transition: color .25s, padding-left .25s; }
.footer a.fl:hover { color: var(--ink); padding-left: 0.4rem; }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; margin-top: clamp(2.5rem,4vw,4rem); padding-top: 1.6rem; border-top: 1px solid var(--line-2); color: var(--ash); font-size: var(--step--1); }

/* ============================================================
   14. REVEAL ANIMATIONS
   ============================================================ */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal-d="1"]{ transition-delay:.08s } [data-reveal-d="2"]{ transition-delay:.16s }
[data-reveal-d="3"]{ transition-delay:.24s } [data-reveal-d="4"]{ transition-delay:.32s }

/* ============================================================
   14b. SUBPAGES (projects / contact / legal)
   ============================================================ */
.subhero { padding-top: clamp(8rem, 6rem + 6vw, 12rem); }
.subhero .back { display: inline-flex; margin-bottom: 2rem; }
.subhero h1 { font-size: var(--step-4); margin-block: 0.4em 0.5em; }
.subhero .lead { max-width: 62ch; }

/* steps (forge process) */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-2); border: 1px solid var(--line-2); border-radius: var(--radius-lg); overflow: hidden; margin-top: clamp(2rem,4vw,3.5rem); }
.step { background: var(--carbon); padding: clamp(1.8rem,3vw,2.8rem); min-height: 220px; display: flex; flex-direction: column; gap: 1rem; transition: background .4s; }
.step:hover { background: var(--graphite); }
.step__n { font-family: var(--serif); font-style: italic; font-size: var(--step-3); color: var(--steel-2); line-height: 1; }
.step h3 { font-size: var(--step-2); }
.step p { color: var(--ink-soft); font-weight: 300; }

/* status pill */
.status { display: inline-flex; align-items: center; gap: 0.6rem; border: 1px solid var(--line); border-radius: 999px; padding: 0.45rem 1rem; font-size: var(--step--1); letter-spacing: 0.04em; color: var(--ink-soft); }
.status i { width: 8px; height: 8px; border-radius: 50%; background: var(--silver); box-shadow: 0 0 0 0 rgba(231,230,228,0.5); animation: blip 2s var(--ease-in-out) infinite; }
@keyframes blip { 0%,100%{opacity:.5;box-shadow:0 0 0 0 rgba(231,230,228,0.4)} 50%{opacity:1;box-shadow:0 0 0 6px rgba(231,230,228,0)} }

/* notify / contact bands */
.band { border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(2rem,4vw,3.5rem); background: linear-gradient(180deg, var(--graphite), var(--carbon)); text-align: center; }
.band h2 { font-size: var(--step-3); margin-bottom: 0.8rem; }
.band .lead { margin-inline: auto; }
.band__row { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-top: 2rem; }

/* contact cards */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; }
.contact-card {
  position: relative; border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--graphite), var(--carbon));
  padding: clamp(1.8rem,3vw,2.8rem); min-height: 260px;
  display: flex; flex-direction: column; justify-content: space-between;
  transition: transform .5s var(--ease), border-color .5s; overflow: hidden;
}
.contact-card:hover { transform: translateY(-4px); border-color: var(--steel-2); }
.contact-card .ic { width: 46px; height: 46px; border-radius: 13px; border: 1px solid var(--line); display: grid; place-items: center; color: var(--silver); }
.contact-card .ic svg { width: 22px; height: 22px; }
.contact-card h3 { font-size: var(--step-2); margin-block: 1.2rem 0.3rem; }
.contact-card .handle { font-family: var(--serif); font-style: italic; color: var(--silver); font-size: var(--step-1); }
.contact-card p { color: var(--ink-soft); font-weight: 300; margin-top: 0.4rem; }
.contact-card a.go { margin-top: 1.6rem; display: inline-flex; align-items: center; gap: 0.5rem; color: var(--ink); font-size: var(--step-0); }
.contact-card a.go .arr { transition: transform .35s var(--ease); }
.contact-card:hover a.go .arr { transform: translateX(4px); }
.note { margin-top: 2rem; color: var(--ash); font-size: var(--step--1); font-style: italic; }

/* legal prose */
.prose { max-width: 78ch; }
.prose .item { padding-block: clamp(1.6rem,3vw,2.4rem); border-top: 1px solid var(--line-2); }
.prose .item:first-child { border-top: 0; }
.prose h2 { font-size: var(--step-2); margin-bottom: 0.7rem; }
.prose p { color: var(--ink-soft); font-weight: 300; }
.prose em { color: var(--ash); font-style: italic; }
.prose strong { color: var(--ink); font-weight: 500; }
.prose a { color: var(--silver); border-bottom: 1px solid var(--steel-2); transition: border-color .3s; }
.prose a:hover { border-bottom-color: var(--silver); }
.legal-meta { color: var(--ash); font-size: var(--step--1); margin-top: 0.6rem; }

/* ============================================================
   15. RESPONSIVE
   ============================================================ */
@media (max-width: 940px) {
  .hero__grid { grid-template-columns: 1fr; align-items: start; }
  .hero__aside { padding-bottom: 0; }
  .essence__head { grid-template-columns: 1fr; }
  .props { grid-template-columns: 1fr 1fr; }
  .products { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .nav__links { display: none; }
  .burger { display: flex; }
  .nav__mobile {
    display: flex; flex-direction: column; gap: 0.4rem;
    position: fixed; inset: 0 0 auto 0; top: 0; padding: 5.5rem var(--gutter) 2.5rem;
    background: rgba(8,8,10,0.96); backdrop-filter: blur(20px);
    transform: translateY(-105%); transition: transform .5s var(--ease); z-index: 99;
    border-bottom: 1px solid var(--line);
  }
  body.menu-open .nav__mobile { transform: translateY(0); }
  body.menu-open .burger span:nth-child(1){ transform: translateY(6.5px) rotate(45deg); }
  body.menu-open .burger span:nth-child(2){ opacity: 0; }
  body.menu-open .burger span:nth-child(3){ transform: translateY(-6.5px) rotate(-45deg); }
  .nav__mobile a { font-family: var(--serif); font-size: var(--step-2); padding-block: 0.5rem; color: var(--ink); }
  .nav__mobile .lang { align-self: flex-start; margin-top: 1rem; }
  .scroll-cue { display: none; }
  .hero { min-height: auto; padding-top: 7rem; padding-bottom: 3rem; }
  .props { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 2rem; }
}

/* ============================================================
   THEME TOGGLE (bouton clair/sombre, à côté de FR/EN)
   ============================================================ */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 30px; margin-left: 0.5rem;
  border: 1px solid var(--line); border-radius: 999px;
  color: var(--ash);
  transition: color .25s, border-color .25s, background .25s;
}
.theme-toggle:hover { color: var(--ink); background: var(--surface); }
.theme-toggle__i { display: inline-block; font-size: 14px; line-height: 1; }
.theme-toggle__i::before { content: "\2600"; }            /* ☀ (mode sombre → propose clair) */
:root[data-theme="light"] .theme-toggle__i::before { content: "\263E"; } /* ☾ (mode clair → propose sombre) */
.nav__mobile .theme-toggle { align-self: flex-start; margin-top: 0.9rem; margin-left: 0; }

/* ============================================================
   LIGHT THEME — activé par [data-theme="light"] (sombre reste par défaut)
   ============================================================ */
:root[data-theme="light"] {
  --void:      #E9E8E4;
  --carbon:    #F3F2EF;
  --graphite:  #FAF9F7;
  --slate:     #FFFFFF;
  --steel:     #E2E1DC;
  --steel-2:   #CFCEC8;

  --platinum:  #17171B;
  --silver:    #232329;
  --pewter:    #55555E;
  --ash:       #6C6C75;
  --ash-dim:   #8C8C94;

  --bg:        #EFEEEB;
  --surface:   #FFFFFF;
  --ink:       #17171B;
  --ink-soft:  #55555E;
  --line:      rgba(20,20,24,0.14);
  --line-2:    rgba(20,20,24,0.07);

  --metal: linear-gradient(177deg,
              #6b6b74 0%, #2c2c32 16%, #7e7e87 38%,
              #3b3b42 54%, #6b6b74 72%, #24242a 100%);
  --metal-sweep: linear-gradient(110deg,
              #55555e 0%, #2c2c32 30%, #8f8f98 48%,
              #2c2c32 66%, #55555e 100%);
  --metal-edge: linear-gradient(90deg,
              transparent, rgba(20,20,24,0.42), transparent);
}
:root[data-theme="light"] body::before {
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(20,20,24,0.05), transparent 55%),
    radial-gradient(100% 100% at 50% 120%, rgba(20,20,24,0.06), transparent 60%);
  mix-blend-mode: multiply;
}
:root[data-theme="light"] body::after { opacity: 0.03; }
:root[data-theme="light"] ::selection { background: rgba(20,20,24,0.14); color: #000; }

/* ============================================================
   PROSE — listes + encart d'information (pages légales / Sparck)
   ============================================================ */
.prose ul { list-style: disc; padding-left: 1.25em; margin: 0.4rem 0 0.2rem; color: var(--ink-soft); font-weight: 300; }
.prose li { margin-bottom: 0.45rem; }
.prose li::marker { color: var(--ash); }
.notice {
  border: 1px solid var(--line); border-left: 3px solid var(--ash);
  background: var(--surface); border-radius: var(--radius);
  padding: 1rem 1.2rem; color: var(--ink-soft);
  font-size: var(--step--1); line-height: 1.6; margin: 1.5rem 0;
}
.notice strong { color: var(--ink); }

/* Barre de navigation « collée » en mode clair : fond clair frosté, contrasté, texte sombre lisible */
:root[data-theme="light"] .nav.is-stuck {
  background: rgba(252,251,249,0.82);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 0 rgba(20,20,24,0.04), 0 10px 30px -18px rgba(20,20,24,0.25);
}

/* ============================================================
   DOC LINKS (liste de documents — page Sparck)
   ============================================================ */
.doclinks { max-width: 60ch; margin-top: 1.6rem; }
.doclinks a {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.15rem 0; border-top: 1px solid var(--line-2);
  color: var(--ink); font-size: var(--step-1); font-family: var(--serif);
  transition: color .3s;
}
.doclinks a:last-child { border-bottom: 1px solid var(--line-2); }
.doclinks a .arr { color: var(--ash); font-family: var(--sans); transition: transform .3s, color .3s; }
.doclinks a:hover { color: var(--pewter); }
.doclinks a:hover .arr { transform: translateX(5px); color: var(--ink); }

/* Hero centré « en cours de forge » (page Sparck) */
.forge { position: relative; min-height: 78vh; display: flex; flex-direction: column; justify-content: center; padding-top: 7rem; }
.forge .display { margin: 0.7rem 0 1.2rem; }