/* ============================================================
   demo.atelierapp.co — Atelier Noir
   Ports the marketing-site design language (Fraunces + Inter Tight
   + JetBrains Mono, dark canvas, champagne accent) onto a single
   static landing page that fronts the four browser-local demos.
   ============================================================ */

:root {
  /* Palette */
  --canvas: #0B0B0D;
  --canvas-2: #111114;
  --ink: #14110F;
  --paper: #F4F1EA;
  --paper-2: #ECE7DA;
  --champagne: #C8A26A;
  --champagne-hi: #E0BE85;
  --steel: #6A7C8C;
  --mute: #8A8782;
  --rule: rgba(200, 162, 106, 0.32);
  --rule-paper: rgba(20, 17, 15, 0.16);

  /* Type */
  --f-display: "Fraunces", "GT Sectra", "Editorial New", Georgia, serif;
  --f-body: "Inter Tight", "Inter", system-ui, -apple-system, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  /* Scale — fluid via clamp() */
  --t-xl: clamp(2.5rem, 8.5vw + 0.25rem, 7.5rem);
  --t-lg: clamp(2rem, 5vw + 0.75rem, 4.25rem);
  --t-md: clamp(1.5rem, 2.4vw + 0.75rem, 2.5rem);
  --t-body: clamp(1rem, 0.4vw + 0.95rem, 1.125rem);
  --t-lede: clamp(1.0625rem, 0.6vw + 1rem, 1.375rem);
  --t-label: 0.72rem;

  /* Layout */
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --maxw: 1280px;
  --radius: 4px;

  /* Motion */
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
  --dur: 0.6s;
}

/* ─── Reset / base ───────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--f-body);
  font-size: var(--t-body);
  line-height: 1.55;
  color: var(--paper);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; margin: 0; }
code {
  font-family: var(--f-mono);
  font-size: 0.9em;
  color: var(--champagne);
  background: rgba(200, 162, 106, 0.08);
  padding: 0.05em 0.4em;
  border-radius: 3px;
  border: 1px solid var(--rule);
  white-space: nowrap;
}

/* ─── Typography ─────────────────────────────────────────────── */

.display {
  font-family: var(--f-display);
  font-weight: 500;
  letter-spacing: -0.022em;
  line-height: 1;
  margin: 0;
  text-wrap: balance;
}
.display em,
.display--italic {
  font-style: italic;
  font-weight: 400;
  color: var(--champagne);
  display: block;
}
.display--xl { font-size: var(--t-xl); line-height: 0.96; }
.display--lg { font-size: var(--t-lg); line-height: 1.02; }
.display--md { font-size: var(--t-md); line-height: 1.1; }

.kicker {
  font-family: var(--f-mono);
  font-size: var(--t-label);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--champagne);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1.25rem;
}
.kicker--paper { color: var(--ink); }
.kicker__rule {
  display: inline-block;
  width: 32px;
  height: 1px;
  background: currentColor;
  flex: 0 0 32px;
}
@media (min-width: 768px) {
  .kicker__rule { width: 56px; flex-basis: 56px; }
}

/* ─── Buttons / links ────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-mono);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.95rem 1.4rem;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  min-height: 48px;
  transition:
    transform var(--dur) var(--ease),
    background var(--dur) var(--ease),
    color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.btn--lg { padding: 1.05rem 1.6rem; font-size: 0.86rem; }
.btn--accent {
  background: var(--champagne);
  color: var(--ink);
  border-color: var(--champagne);
}
.btn--accent:hover {
  background: var(--champagne-hi);
  border-color: var(--champagne-hi);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -16px rgba(200,162,106,0.7);
}
.btn--ink {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn--ink:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -14px rgba(20,17,15,0.5);
}

.link-quiet {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper);
  opacity: 0.85;
  transition: opacity var(--dur) var(--ease), color var(--dur) var(--ease);
}
.link-quiet:hover { opacity: 1; color: var(--champagne); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--champagne);
  padding-bottom: 2px;
  border-bottom: 1px solid var(--rule);
  transition:
    gap var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}
.link-arrow:hover { gap: 0.85rem; border-color: var(--champagne); }
.link-arrow--ink { color: var(--ink); border-color: var(--rule-paper); }
.link-arrow--ink:hover { color: var(--ink); border-color: var(--ink); }

/* ─── NAV ────────────────────────────────────────────────────── */

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem var(--gutter);
  background: linear-gradient(to bottom, rgba(11,11,13,0.85), rgba(11,11,13,0));
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav.is-scrolled {
  background: rgba(11,11,13,0.92);
  border-bottom: 1px solid var(--rule);
}
.wordmark {
  display: inline-block;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--paper);
  white-space: nowrap;
  user-select: none;
}
.wordmark em {
  font-style: italic;
  color: var(--champagne);
}
.wordmark--lg { font-size: 1.9rem; }
@media (min-width: 768px) {
  .nav__brand .wordmark { font-size: 1.7rem; }
}

.nav__primary { display: none; }
.nav__cta { display: none; }
@media (min-width: 1024px) {
  .nav__primary { display: block; }
  .nav__primary ul { display: flex; gap: 2rem; }
  .nav__primary a {
    font-family: var(--f-mono);
    font-size: 0.76rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--paper);
    opacity: 0.78;
    padding: 0.5rem 0;
    border-bottom: 1px solid transparent;
    transition:
      opacity var(--dur) var(--ease),
      border-color var(--dur) var(--ease),
      color var(--dur) var(--ease);
  }
  .nav__primary a:hover {
    opacity: 1;
    color: var(--champagne);
    border-bottom-color: var(--champagne);
  }
  .nav__cta { display: flex; align-items: center; gap: 1.25rem; }
}

/* ─── HERO ───────────────────────────────────────────────────── */

.hero {
  position: relative;
  min-height: 100svh;
  padding: 7rem var(--gutter) 4rem;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(1200px 600px at 78% 10%, rgba(200,162,106,0.10), transparent 60%),
    radial-gradient(900px 600px at 10% 110%, rgba(106,124,140,0.10), transparent 60%),
    var(--canvas);
}
.hero__scrim {
  position: absolute; inset: 0; z-index: -2;
  background:
    linear-gradient(180deg, rgba(11,11,13,0.55) 0%, rgba(11,11,13,0.15) 35%, rgba(11,11,13,0.85) 95%),
    linear-gradient(90deg, rgba(11,11,13,0.5) 0%, rgba(11,11,13,0) 60%);
}
.hero__grain {
  position: absolute; inset: 0; z-index: -1;
  pointer-events: none;
  opacity: 0.06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.6 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
.hero__inner {
  position: relative;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
}
.hero__lede {
  max-width: 36rem;
  font-size: var(--t-lede);
  margin: 1.5rem 0 2rem;
  color: rgba(244, 241, 234, 0.86);
}
.hero__lede em {
  font-family: var(--f-display);
  font-style: italic;
  color: var(--champagne);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2.25rem;
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(244,241,234,0.78);
}
.hero__meta li { display: inline-flex; gap: 0.75rem; align-items: baseline; }
.hero__meta span { color: var(--champagne); }

.hero__seam {
  position: absolute;
  top: 0; bottom: 0;
  left: calc(var(--gutter) + 1px);
  width: 1px;
  background: var(--rule);
  pointer-events: none;
  z-index: 1;
  opacity: 0.7;
}
@media (min-width: 1024px) {
  .hero__seam { left: 50%; }
}

/* ─── SECTION shell ──────────────────────────────────────────── */

.section {
  padding: 5rem var(--gutter);
  max-width: var(--maxw);
  margin: 0 auto;
}
@media (min-width: 1024px) {
  .section { padding: 8rem var(--gutter); }
}
.section__head { max-width: 44rem; margin-bottom: 3rem; }
.section__lede {
  font-size: var(--t-lede);
  color: rgba(244,241,234,0.74);
  margin-top: 1.25rem;
  max-width: 38rem;
}

/* ─── DEMO cards (2×2 on desktop) ────────────────────────────── */

.demos {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .demos { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
}

.demo {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 2.5rem 1.75rem 2.25rem;
  border: 1px solid var(--rule);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
  border-radius: var(--radius);
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.demo:hover {
  transform: translateY(-4px);
  border-color: var(--champagne);
  box-shadow: 0 24px 60px -28px rgba(200,162,106,0.45);
}
.demo:hover .demo__icon {
  color: var(--champagne);
  transform: translateX(2px);
}
.demo:hover .link-arrow { gap: 0.85rem; border-color: var(--champagne); }

.demo__num {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--champagne);
  margin: 0 0 1.75rem;
}
.demo__icon {
  width: 44px;
  height: 44px;
  margin-bottom: 1.5rem;
  color: var(--paper);
  opacity: 0.92;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.demo__icon svg { width: 100%; height: 100%; display: block; }

.demo__title {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: clamp(1.5rem, 1.8vw + 0.8rem, 2rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 0 0 1rem;
}
.demo__body {
  color: rgba(244,241,234,0.78);
  margin: 0 0 1.25rem;
  line-height: 1.6;
}
.demo__body em {
  font-family: var(--f-display);
  font-style: italic;
  color: var(--champagne);
  font-size: 1.02em;
}
.demo__list {
  margin: 0 0 2rem;
  display: grid;
  gap: 0.5rem;
}
.demo__list li {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  color: rgba(244,241,234,0.86);
  font-size: 0.95rem;
}
.demo__list li::before {
  content: "—";
  color: var(--champagne);
  font-family: var(--f-mono);
  font-size: 0.85em;
  flex: 0 0 auto;
}
.demo .link-arrow { margin-top: auto; align-self: flex-start; }

/* ─── PULL QUOTE ─────────────────────────────────────────────── */

.pullquote {
  position: relative;
  padding: 6rem var(--gutter);
  max-width: var(--maxw);
  margin: 0 auto;
  text-align: left;
}
.pullquote .display { max-width: 28ch; }
.pullquote .display em { display: inline; }
.pullquote__rule {
  display: block;
  width: 56px;
  height: 1px;
  background: var(--champagne);
  margin-bottom: 2rem;
}
.pullquote__by {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
  margin-top: 2rem;
  max-width: 36rem;
}

/* ─── CTA (inverse / paper) ──────────────────────────────────── */

.cta {
  background: var(--paper);
  color: var(--ink);
  padding: 6rem var(--gutter);
  position: relative;
  isolation: isolate;
}
.cta::before {
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.4 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  opacity: 0.04;
  z-index: -1;
  pointer-events: none;
}
.cta__inner { max-width: 56rem; margin: 0 auto; }
.cta .display em { color: var(--champagne); }
.cta__lede {
  font-size: var(--t-lede);
  color: rgba(20,17,15,0.7);
  margin: 1.5rem 0 2.5rem;
  max-width: 36rem;
}
.cta__row { display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: center; }

/* ─── FOOTER ─────────────────────────────────────────────────── */

.foot {
  background: var(--canvas);
  border-top: 1px solid var(--rule);
  padding: 4rem var(--gutter) 2rem;
}
.foot__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  max-width: var(--maxw);
  margin: 0 auto;
}
@media (min-width: 768px) {
  .foot__top { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1024px) {
  .foot__top { grid-template-columns: 5fr 7fr; }
}
.foot__brand .wordmark { text-decoration: none; }
.foot__brand p { color: var(--mute); margin-top: 1.25rem; max-width: 22rem; }

.foot__nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.foot__label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--champagne);
  margin: 0 0 1rem;
}
.foot__nav a {
  color: rgba(244,241,234,0.78);
  font-size: 0.95rem;
  display: inline-block;
  padding: 0.25rem 0;
  transition: color var(--dur) var(--ease);
}
.foot__nav a:hover { color: var(--champagne); }
.foot__nav ul li + li { margin-top: 0.25rem; }

.foot__bottom {
  display: flex; flex-wrap: wrap; gap: 1rem;
  justify-content: space-between; align-items: center;
  max-width: var(--maxw); margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  color: var(--mute);
  font-size: 0.85rem;
}
.foot__social { display: flex; gap: 1.25rem; }
.foot__social a {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(244,241,234,0.7);
}
.foot__social a:hover { color: var(--champagne); }

/* ─── Reveal animations ──────────────────────────────────────── */

[data-animate] {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 0.9s var(--ease),
    transform 0.9s var(--ease);
  will-change: opacity, transform;
}
[data-animate].in-view {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  [data-animate] { transition: none; opacity: 1; transform: none; }
}

/* ─── Focus ──────────────────────────────────────────────────── */

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--champagne);
  outline-offset: 3px;
  border-radius: 2px;
}