/* ============================================================
   LIMINAL FRAMES — design system
   Palette and language derived from the studio's footage:
   near-black base, fog greys, a single ember accent.
   ============================================================ */

/* ---------- fonts (self-hosted) ---------- */
@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-400.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Instrument Serif';
  src: url('/fonts/instrument-serif-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Instrument Serif';
  src: url('/fonts/instrument-serif-400-italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('/fonts/ibm-plex-mono-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('/fonts/ibm-plex-mono-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* ---------- tokens ---------- */
:root {
  --bg: #0b0d0d;
  --bg-raise: #121514;
  --ink: #e8e6e0;
  --ink-dim: #a9ada6;
  --ink-faint: #878c84; /* AA on --bg at small sizes */
  --line: rgba(232, 230, 224, 0.14);
  --line-soft: rgba(232, 230, 224, 0.07);
  --amber: #c98d4f;
  --amber-dim: #8f6539;
  --serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --pad: clamp(20px, 4vw, 56px);
  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--amber); color: var(--bg); }

h1, h2, h3 { font-weight: 400; margin: 0; }
h1, h2 { font-family: var(--serif); letter-spacing: 0.005em; }
em { font-style: italic; }

.container { max-width: 1360px; margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }

.mono {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.eyebrow, .tile-meta, .filter-btn, .footer-note { font-family: var(--mono); letter-spacing: 0.09em; text-transform: uppercase; }
.eyebrow {
  font-size: 11px;
  color: var(--ink-dim);
  margin: 0 0 20px;
}
.eyebrow .tick { color: var(--amber); }

/* focus */
:focus-visible { outline: 1px solid var(--amber); outline-offset: 3px; }

.skip-link {
  position: absolute; left: -9999px; top: 12px; z-index: 200;
  background: var(--bg); color: var(--ink); padding: 8px 16px;
  font-family: var(--mono); font-size: 12px; border: 1px solid var(--line);
}
.skip-link:focus { left: 12px; }

/* ---------- film grain ---------- */
.grain {
  position: fixed; inset: -50%; width: 200%; height: 200%;
  pointer-events: none; z-index: 40;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.045;
}

/* ---------- header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 60;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(11, 13, 13, 0.82);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--line-soft);
}
.header-inner {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; padding-top: 22px; padding-bottom: 18px;
}
.wordmark {
  font-family: var(--mono); font-size: 13px; font-weight: 500;
  letter-spacing: 0.22em; text-transform: uppercase; white-space: nowrap;
}
.wordmark .bracket { color: var(--amber); font-weight: 400; }
.site-nav { display: flex; gap: clamp(16px, 3vw, 36px); flex-wrap: wrap; }
.site-nav a {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-dim);
  transition: color 0.25s var(--ease);
  padding: 4px 0;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current='page'] { color: var(--ink); }
.site-nav a[aria-current='page']::after {
  content: ''; display: block; height: 1px; background: var(--amber); margin-top: 3px;
}

/* ---------- hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: flex-end;
  overflow: hidden;
}
.hero-video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: center 40%;
}
.hero-scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(to bottom, rgba(11,13,13,0.42) 0%, rgba(11,13,13,0.12) 34%, rgba(11,13,13,0.32) 62%, rgba(11,13,13,0.88) 100%),
    radial-gradient(ellipse at 22% 78%, rgba(11,13,13,0.55) 0%, transparent 58%);
}
.hero-content {
  position: relative; z-index: 2; width: 100%;
  padding-bottom: clamp(72px, 12vh, 140px);
}
.hero h1 {
  font-size: clamp(2.6rem, 6.4vw, 5.4rem);
  line-height: 1.06;
  max-width: 14em;
  text-wrap: balance;
  margin: 0 0 24px;
}
.hero h1 em { color: var(--ink); }
.hero-sub {
  max-width: 34em; color: var(--ink-dim);
  font-size: clamp(0.95rem, 1.3vw, 1.08rem);
  margin: 0 0 36px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; padding: 13px 22px;
  border: 1px solid var(--line); color: var(--ink);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
}
.btn:hover { border-color: var(--amber); color: var(--ink); }
.btn .arrow { color: var(--amber); transition: transform 0.3s var(--ease); }
.btn:hover .arrow { transform: translate(2px, 2px); }
.btn--solid { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn--solid .arrow { color: var(--amber-dim); }
.btn--solid:hover { background: transparent; color: var(--ink); border-color: var(--amber); }
.hero-meta {
  position: absolute; right: var(--pad); bottom: 26px; z-index: 2;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-faint);
  display: flex; align-items: center; gap: 8px;
}
.hero-meta .rec {
  width: 6px; height: 6px; border-radius: 50%; background: var(--amber);
  animation: blink 2.4s steps(1) infinite;
}
@keyframes blink { 0%, 70% { opacity: 1; } 71%, 100% { opacity: 0.25; } }
@media (prefers-reduced-motion: reduce) { .hero-meta .rec { animation: none; } }

/* ---------- sections ---------- */
.section { padding-top: clamp(72px, 11vh, 130px); padding-bottom: clamp(72px, 11vh, 130px); }
.section + .section { border-top: 1px solid var(--line-soft); }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 24px; margin-bottom: clamp(36px, 5vw, 64px);
}
.section-title { font-size: clamp(1.9rem, 3.6vw, 3rem); line-height: 1.12; max-width: 18em; }
.section-link {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-dim); white-space: nowrap;
  transition: color 0.25s var(--ease);
}
.section-link:hover { color: var(--amber); }

.statement p {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.9vw, 2.4rem);
  line-height: 1.32;
  max-width: 30em;
  margin: 0;
  color: var(--ink);
  text-wrap: pretty;
}
.statement p + p { margin-top: 1em; }
.statement em { color: var(--ink-dim); }

/* ---------- tiles / gallery ---------- */
.tile-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2.2vw, 28px); }
/* reserve space before JS injects tiles so the footer never shifts (CLS) */
[data-gallery] { min-height: 100svh; align-content: start; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
/* work index: denser at wide viewports */
@media (min-width: 1200px) {
  [data-gallery='all'] { grid-template-columns: repeat(4, 1fr); }
  /* home feature grid: staggered editorial columns */
  [data-gallery='featured'] > .tile:nth-child(3n + 2) { transform: translateY(56px); }
  [data-gallery='featured'] > .tile:nth-child(3n) { transform: translateY(112px); }
  [data-gallery='featured'] { padding-bottom: 112px; }
}
.tile { position: relative; }
.tile-media {
  position: relative; display: block; aspect-ratio: 9 / 16;
  overflow: hidden; background: var(--bg-raise);
}
.tile-media img, .tile-media video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover;
}
.tile-media img { transition: transform 0.9s var(--ease), opacity 0.5s var(--ease); }
.tile-media video { opacity: 0; transition: opacity 0.45s var(--ease); }
.tile-media.playing video { opacity: 1; }
.tile-media::after {
  content: ''; position: absolute; inset: 0;
  border: 1px solid var(--line-soft);
  transition: border-color 0.35s var(--ease);
  pointer-events: none;
}
.tile-media:hover::after, .tile-media:focus-visible::after { border-color: var(--line); }
.tile-media:hover img { transform: scale(1.025); }
.tile-frame {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.14em;
  color: rgba(232, 230, 224, 0.72);
  background: rgba(11, 13, 13, 0.45);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  padding: 4px 7px;
}
.tile-info { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 14px 2px 0; }
.tile-title { font-family: var(--sans); font-size: 0.92rem; font-weight: 500; letter-spacing: 0.01em; }
.tile-meta { font-size: 10px; color: var(--ink-faint); white-space: nowrap; }

/* ---------- work page ---------- */
.page-head { padding-top: clamp(140px, 22vh, 220px); padding-bottom: clamp(40px, 6vh, 72px); }
.page-head h1 {
  font-size: clamp(2.6rem, 6vw, 5rem); line-height: 1.05;
  max-width: 12em; text-wrap: balance; margin: 0 0 20px;
}
.page-head .lede { max-width: 36em; color: var(--ink-dim); font-size: clamp(0.98rem, 1.3vw, 1.1rem); margin: 0; }

.filter-bar {
  display: flex; gap: 6px; flex-wrap: wrap;
  padding-bottom: 28px; margin-bottom: 8px;
  min-height: 63px; /* reserve one button row pre-JS (CLS) */
}
@media (max-width: 600px) {
  .filter-bar { min-height: 104px; } /* buttons wrap to two rows */
}
.filter-btn {
  font-size: 11px; padding: 9px 16px;
  background: none; border: 1px solid transparent; color: var(--ink-faint);
  cursor: pointer; transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.filter-btn:hover { color: var(--ink); }
.filter-btn[aria-pressed='true'] { color: var(--ink); border-color: var(--line); }
.filter-btn .count { color: var(--amber); margin-left: 6px; font-size: 9.5px; }
.tile.is-hidden { display: none; }

/* ---------- lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 100;
  display: none;
  background: rgba(7, 8, 8, 0.93);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.lightbox.open { display: block; }
.lightbox-inner {
  height: 100%; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: clamp(16px, 3vw, 48px);
}
.lightbox video {
  max-height: min(78vh, 900px); max-width: 92vw;
  background: #000;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
}
.lightbox-caption {
  display: flex; align-items: baseline; gap: 18px;
  margin-top: 18px; max-width: 92vw;
}
.lightbox-caption h2 { font-family: var(--sans); font-size: 0.95rem; font-weight: 500; }
.lightbox-caption .mono { color: var(--ink-faint); font-size: 10px; }
.lightbox-close, .lightbox-nav {
  position: absolute; z-index: 2;
  background: none; border: 1px solid var(--line); color: var(--ink);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  padding: 10px 14px; cursor: pointer;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.lightbox-close:hover, .lightbox-nav:hover { border-color: var(--amber); }
.lightbox-close { top: 20px; right: 20px; }
.lightbox-nav.prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lightbox-nav.next { right: 20px; top: 50%; transform: translateY(-50%); }

/* ---------- capabilities ---------- */
.pillar {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(32px, 6vw, 96px); align-items: start;
}
.pillar + .pillar { margin-top: clamp(72px, 10vh, 120px); padding-top: clamp(72px, 10vh, 120px); border-top: 1px solid var(--line-soft); }
.pillar-num { color: var(--amber); }
.pillar h2 { font-size: clamp(1.9rem, 3.4vw, 2.9rem); line-height: 1.12; margin: 14px 0 22px; max-width: 15em; }
.pillar .lede { color: var(--ink-dim); max-width: 34em; margin: 0 0 36px; font-size: 1.02rem; }
.pillar-list { list-style: none; margin: 0; padding: 0; max-width: 40em; }
.pillar-list li {
  display: grid; grid-template-columns: 30px 220px 1fr; gap: 18px;
  padding: 16px 0; border-top: 1px solid var(--line-soft);
  font-size: 0.92rem;
}
.pillar-list li:last-child { border-bottom: 1px solid var(--line-soft); }
.pillar-list .idx { font-family: var(--mono); font-size: 10px; color: var(--ink-faint); padding-top: 4px; }
.pillar-list .what { font-weight: 500; }
.pillar-list .how { color: var(--ink-dim); }
.pillar-visual { position: relative; }
.pillar-visual img { aspect-ratio: 9 / 13; object-fit: cover; width: 100%; filter: saturate(0.92); }
.pillar-visual figcaption {
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-faint); margin-top: 10px;
}

.process { margin-top: clamp(80px, 12vh, 140px); }
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 3vw, 40px); }
.process-step { border-top: 1px solid var(--line); padding-top: 18px; }
.process-step .mono { color: var(--amber); font-size: 10px; }
.process-step h3 { font-size: 1.05rem; font-weight: 500; margin: 10px 0 8px; font-family: var(--sans); }
.process-step p { color: var(--ink-dim); font-size: 0.92rem; margin: 0; }

/* ---------- about ---------- */
.about-grid {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(32px, 6vw, 96px); align-items: start;
}
.about-copy p { max-width: 36em; color: var(--ink-dim); margin: 0 0 1.4em; font-size: 1.02rem; }
.about-copy p strong { color: var(--ink); font-weight: 500; }
.cred-list { list-style: none; margin: 48px 0 0; padding: 0; max-width: 40em; }
.cred-list li {
  display: grid; grid-template-columns: 150px 1fr; gap: 18px;
  padding: 14px 0; border-top: 1px solid var(--line-soft); font-size: 0.92rem;
}
.cred-list li:last-child { border-bottom: 1px solid var(--line-soft); }
.cred-list .k { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--amber); padding-top: 4px; }
.cred-list .v { color: var(--ink-dim); }

/* ---------- contact ---------- */
.contact-wrap { min-height: 72vh; display: flex; flex-direction: column; justify-content: center; }
.contact-email {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(1.6rem, 4.2vw, 3.4rem);
  color: var(--ink); border-bottom: 1px solid var(--line);
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
  width: fit-content; max-width: 100%; word-break: break-all;
}
.contact-email:hover { border-color: var(--amber); color: var(--amber); }
.social-list { list-style: none; display: flex; gap: clamp(20px, 4vw, 48px); flex-wrap: wrap; margin: 64px 0 0; padding: 0; }
.social-list a {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-dim);
  display: inline-flex; align-items: baseline; gap: 8px;
  transition: color 0.25s var(--ease);
}
.social-list a:hover { color: var(--ink); }
.social-list .at { color: var(--amber); }

/* ---------- CTA band ---------- */
.cta-band { text-align: left; }
.cta-band .statement p { max-width: 24em; }
.cta-band .btn { margin-top: 36px; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line-soft); padding: 48px 0 40px; }
.footer-grid { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: baseline; }
.footer-nav { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-nav a { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); transition: color 0.25s var(--ease); }
.footer-nav a:hover { color: var(--ink); }
.footer-note {
  margin-top: 28px; font-size: 10px; color: var(--ink-faint);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.footer-note .disclosure .tick { color: var(--amber); }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .tile-media img { transition: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .tile-grid { grid-template-columns: repeat(3, 1fr); }
  .pillar, .about-grid { grid-template-columns: 1fr; }
  .pillar-visual { max-width: 420px; }
}
@media (max-width: 860px) {
  .tile-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: 1fr; gap: 28px; }
  .section-head { flex-direction: column; gap: 10px; }
  .pillar-list li { grid-template-columns: 26px 1fr; }
  .pillar-list .how { grid-column: 2; margin-top: 2px; }
}
@media (max-width: 560px) {
  .header-inner { flex-direction: column; gap: 8px; align-items: flex-start; padding-top: 16px; padding-bottom: 14px; }
  .hero-meta { display: none; }
  .tile-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .tile-info { padding-top: 10px; }
  .tile-title { font-size: 0.8rem; }
  .tile-meta { display: none; }
  .cred-list li { grid-template-columns: 1fr; gap: 4px; }
  .lightbox-nav { display: none; }
}