/* ============================================================
   samuelvanvuuren.com — GLACIAL GRAIN (Design Pass, July 2026)
   Cold blue-white ledger. Imagery only as dither. Mono does the
   work; serif italic is reserved for titles of pieces.
   ============================================================ */

@font-face {
  font-family: "Plex Mono";
  src: url("/assets/fonts/mono-400.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("/assets/fonts/mono-500.woff2") format("woff2");
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Serif4";
  src: url("/assets/fonts/serif4-400i.woff2") format("woff2");
  font-weight: 400; font-style: italic; font-display: swap;
}

/* ---------- tokens: light is the base, dark is the same set flipped ---------- */
:root {
  --page: #FDFEFF; --ink: #16232F; --ink2: #48617A; --meta: #5B7188;
  --faint: #8AA5BC; --accent: #3E6E96; --dot: #C3D2DF; --pend: #DCE5EC;
  --hair: rgba(22, 35, 47, .1); --grainfoot: #48617A;
  --topshade: rgba(0, 0, 0, 0);
  --mono: "Plex Mono", "SF Mono", Menlo, monospace;
  --serif: "Serif4", "Source Serif 4", Georgia, serif;
  --gut: 64px;
  --navh: 85px;
}
@media (max-width: 640px) { :root { --navh: 55px; } }
:root[data-theme="dark"] {
  --page: #0B121A; --ink: #F1F6FA; --ink2: #B9CBDA; --meta: #9FB6C9;
  --faint: #7E97AC; --accent: #8FABC2; --dot: #3E5A73; --pend: #24374C;
  --hair: rgba(241, 246, 250, .12); --grainfoot: #6FA0C7;
  --topshade: rgba(11, 18, 26, .45);
}
@media (max-width: 640px) { :root { --gut: 22px; } }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--page); color: var(--ink2);
  font-family: var(--mono); font-size: 14px; line-height: 1.9;
}
body.theme-anim, body.theme-anim * {
  transition: color 1s ease, background-color 1s ease, border-color 1s ease;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--ink); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 3px;
}
em { color: var(--ink); font-style: normal; }
.worktitle em, em.title { font-family: var(--serif); font-style: italic; }

.skip { position: absolute; left: -999px; top: 8px; z-index: 40; background: var(--page); padding: 8px 14px; }
.skip:focus { left: 8px; }

/* ---------- shared type roles ---------- */
.kicker  { font-size: 12px; letter-spacing: .34em; color: var(--accent); }
.micro   { font-size: 11px; letter-spacing: .34em; color: var(--meta); }
.metaln  { font-size: 12px; color: var(--meta); }
.faintln { font-size: 12px; line-height: 1.9; color: var(--faint); }
.arrowlink { font-size: 12px; letter-spacing: .18em; color: var(--accent); white-space: nowrap; }
.arrowlink:hover { color: var(--ink); }
.pagehead { font-weight: 500; font-size: clamp(38px, 4.4vw, 52px); letter-spacing: -.03em; color: var(--ink); margin: 22px 0 0; line-height: 1.05; }

/* work titles — the ONLY serif on the site */
.worktitle {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  font-size: clamp(26px, 3vw, 36px); color: var(--ink); line-height: 1.2;
}
.worktitle a { color: var(--ink); }
.worktitle a:hover { color: var(--accent); }
.worktitle .flag {
  font-family: var(--mono); font-style: normal; font-size: 12px;
  letter-spacing: .24em; color: var(--accent); white-space: nowrap;
}

/* ---------- nav ---------- */
.nav {
  position: relative; z-index: 3;
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 34px var(--gut);
}
.nav .wordmark { font-weight: 500; font-size: 13px; letter-spacing: .08em; color: var(--ink); }
.nav nav { display: flex; gap: 38px; align-items: baseline; font-size: 12px; letter-spacing: .14em; }
.nav nav a { color: var(--ink2); }
.nav nav a:hover, .nav nav a[aria-current="page"] { color: var(--ink); }
#themeBtn {
  all: unset; cursor: pointer; font-family: var(--mono); font-size: 12px;
  color: var(--faint); letter-spacing: .1em; padding: 2px 4px;
}
#themeBtn:hover { color: var(--ink); }
@media (max-width: 640px) {
  .nav { padding: 20px var(--gut); }
  .nav nav { gap: 14px; font-size: 10px; letter-spacing: .1em; }
}

/* ---------- hero (home) ---------- */
.hero { position: relative; height: 88vh; min-height: 640px; overflow: hidden; margin-top: calc(-1 * var(--navh)); }
.hero canvas {
  position: absolute; top: -90px; left: 0; width: 100%; height: calc(100% + 90px); display: block;
}
.hero .shade {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(to bottom, var(--topshade), rgba(0,0,0,0) 24%);
}
.hero-copy { position: absolute; left: var(--gut); right: var(--gut); bottom: 9vh; }
.hero-copy .kicker { margin-bottom: 26px; }
.hero-name {
  font-weight: 500; font-size: calc(clamp(54px, 7.4vw, 104px) * 0.9);
  line-height: 1.04; letter-spacing: -.03em; color: var(--ink);
}
.hero-lede { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-top: 36px; }
.hero-lede p { font-size: 14px; line-height: 1.9; color: var(--ink2); max-width: 54ch; margin: 0; }
@media (max-width: 640px) {
  .hero { height: 76vh; min-height: 560px; }
  .hero-copy { bottom: 30px; }
  .hero-copy .kicker { font-size: 10px; letter-spacing: .3em; margin-bottom: 16px; }
  .hero-name { font-size: 42px; }
  .hero-lede { margin-top: 18px; }
  .hero-lede p { font-size: 12px; line-height: 1.85; }
}

/* scroll-driven hero sink + section rise (progressive enhancement) */
@supports (animation-timeline: scroll()) {
  @keyframes heroSink { from { transform: translateY(0) scale(1.04); } to { transform: translateY(90px) scale(1.04); } }
  .hero canvas { animation: heroSink linear both; animation-timeline: scroll(); animation-range: 0vh 120vh; }
  @keyframes riseIn { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: none; } }
  .rise { animation: riseIn linear both; animation-timeline: view(); animation-range: entry 0% entry 55%; }
}

/* ---------- sections ---------- */
main { display: block; }
.sheet { padding: 12vh var(--gut) 0; max-width: 1160px; margin: 0 auto; }
.pagetop { padding: 70px var(--gut) 90px; max-width: 1160px; margin: 0 auto; position: relative; }
.workstack { display: flex; flex-direction: column; gap: 9vh; margin-top: 8vh; }
.rowlinks { display: flex; flex-wrap: wrap; gap: 28px 52px; font-size: 12px; letter-spacing: .18em; margin-top: 11vh; }

/* ---------- player row ---------- */
.prow-top { display: flex; align-items: baseline; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.player { display: flex; align-items: center; gap: 22px; margin-top: 26px; }
.pbtn {
  all: unset; cursor: pointer; width: 46px; height: 46px; border-radius: 50%;
  background: var(--ink); display: grid; place-items: center; flex: none;
  transition: background .2s;
}
.pbtn:hover { background: var(--accent); }
.pbtn span { font-family: var(--mono); font-size: 13px; color: var(--page); letter-spacing: -.08em; }
.pbtn.small { width: 34px; height: 34px; }
.pbtn.small span { font-size: 11px; }
.pbtn.playing { background: var(--accent); }
.ptrack {
  flex: 1; height: 12px; background: var(--dot); position: relative; cursor: pointer;
  mask-image: url("/assets/img/g5-track.png");
  mask-size: 98px 12px; mask-repeat: repeat-x; mask-position: 0 center;
  -webkit-mask-image: url("/assets/img/g5-track.png");
  -webkit-mask-size: 98px 12px; -webkit-mask-repeat: repeat-x; -webkit-mask-position: 0 center;
}
.ptrack .fill {
  position: absolute; top: 0; bottom: 0; left: 0; width: 0%;
  background: var(--accent); transition: width .3s linear;
}
.ptime { font-size: 12px; color: var(--meta); min-width: 112px; text-align: right; font-variant-numeric: tabular-nums; }
/* pending (in progress / no recording yet) */
.pend-dot { font-size: 13px; color: var(--faint); width: 46px; text-align: center; flex: none; }
@keyframes pulseDot { 0%, 100% { opacity: .3; } 50% { opacity: 1; } }
.pend-dot.pulse { animation: pulseDot 2.4s infinite; }
.ptrack-pend {
  flex: 1; height: 12px; background: var(--pend);
  mask-image: url("/assets/img/g5-pend.png"), linear-gradient(to right, black 40%, transparent);
  mask-size: 91px 12px, 100% 100%; mask-repeat: repeat-x, no-repeat;
  mask-position: 0 center, 0 0; mask-composite: intersect;
  -webkit-mask-image: url("/assets/img/g5-pend.png"), linear-gradient(to right, black 40%, transparent);
  -webkit-mask-size: 91px 12px, 100% 100%; -webkit-mask-repeat: repeat-x, no-repeat;
  -webkit-mask-position: 0 center, 0 0; -webkit-mask-composite: source-in;
}
.pcredit { font-size: 12px; line-height: 1.9; color: var(--faint); margin-top: 18px; }
.pcredit a { color: var(--accent); }
.pcredit a:hover { color: var(--ink); }
@media (max-width: 640px) {
  .player { gap: 14px; flex-wrap: wrap; }
  .ptime { min-width: 0; width: 100%; text-align: left; padding-left: 58px; }
  .pbtn { width: 44px; height: 44px; }
}

/* ---------- works index (ledger with presence) ---------- */
.presence-canvas {
  position: absolute; right: -60px; top: 120px; width: 560px; max-width: 70vw;
  height: auto; display: block; opacity: .5; pointer-events: none; z-index: 0;
  mask-image: linear-gradient(to left, black 35%, transparent 95%);
  -webkit-mask-image: linear-gradient(to left, black 35%, transparent 95%);
}
.filters { display: flex; gap: 30px; font-size: 12px; letter-spacing: .16em; margin-top: 20px; position: relative; z-index: 2; }
.filters button {
  all: unset; cursor: pointer; font-family: var(--mono); font-size: 12px;
  letter-spacing: .16em; color: var(--faint);
}
.filters button:hover { color: var(--ink2); }
.filters button[aria-pressed="true"] { color: var(--ink); }
.ledger { display: flex; flex-direction: column; margin-top: 52px; max-width: 640px; position: relative; z-index: 2; }
.ledger .lrow { padding: 28px 0; border-top: 1px solid var(--hair); }
.ledger .lrow:last-child { border-bottom: 1px solid var(--hair); }
.ledger .lrow[hidden] { display: none; }
.lrow-inner { display: flex; align-items: center; gap: 20px; }
.lrow .worktitle { font-size: 26px; }
.lrow .metaln { margin-top: 5px; }
.lrow .pend-dot { width: 34px; font-size: 13px; }

/* ---------- work detail ---------- */
.detail-hero { position: relative; height: 480px; overflow: hidden; margin-top: calc(-1 * var(--navh)); }
.detail-hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.detail-hero .fadeup {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(to top, var(--page) 4%, transparent 55%);
}
.detail-hero .dh-title {
  position: absolute; left: var(--gut); right: var(--gut); bottom: 44px;
  display: flex; align-items: baseline; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.detail-hero .worktitle { font-size: clamp(38px, 5vw, 60px); }
.detail-body { padding: 44px var(--gut) 90px; max-width: 1160px; margin: 0 auto; }
.detail-grid { display: grid; grid-template-columns: 1fr 320px; gap: 80px; margin-top: 64px; }
.detail-grid .note p { font-size: 14px; line-height: 2; color: var(--ink2); margin: 26px 0 0; max-width: 60ch; }
.spec-col { display: flex; flex-direction: column; gap: 30px; }
.spec-col .lab { font-size: 11px; letter-spacing: .24em; color: var(--meta); }
.spec-col .val { font-size: 13px; line-height: 1.9; color: var(--ink2); margin-top: 12px; }
@media (max-width: 860px) { .detail-grid { grid-template-columns: 1fr; gap: 44px; } }

/* plain page header for works without a hero image */
.plainhead { padding: 70px var(--gut) 0; max-width: 1160px; margin: 0 auto; }

/* ---------- software spec sheet ---------- */
.software-grid { display: grid; grid-template-columns: 1fr 460px; gap: 80px; margin-top: 56px; align-items: start; }
.speclist { display: flex; flex-direction: column; margin-top: 44px; border-top: 1px solid var(--hair); }
.speclist > div {
  display: grid; grid-template-columns: 160px 1fr; gap: 24px;
  padding: 16px 0; border-bottom: 1px solid var(--hair);
}
.speclist .lab { font-size: 11px; letter-spacing: .2em; color: var(--meta); }
.speclist .val { font-size: 13px; color: var(--ink2); }
.shot-slot {
  border: 1px solid var(--hair); display: grid; place-items: center; min-height: 300px;
  background: repeating-linear-gradient(45deg, rgba(62,110,150,.07), rgba(62,110,150,.07) 10px, transparent 10px, transparent 20px);
}
:root[data-theme="dark"] .shot-slot {
  background: repeating-linear-gradient(45deg, rgba(143,171,194,.08), rgba(143,171,194,.08) 10px, transparent 10px, transparent 20px);
}
.shot-slot span { font-size: 11px; letter-spacing: .18em; color: var(--meta); text-align: center; padding: 20px; }
.shot-slot img { width: 100%; display: block; }
@media (max-width: 980px) { .software-grid { grid-template-columns: 1fr; gap: 44px; } }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: 430px 1fr; gap: 80px; align-items: start; }
.about-grid img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; object-position: top; display: block; }
.about-grid .cap { font-size: 11px; color: var(--faint); margin-top: 12px; letter-spacing: .04em; }
.about-grid .bio p { font-size: 14px; line-height: 2; color: var(--ink2); margin: 22px 0 0; max-width: 56ch; }
.about-grid .bio p:first-of-type { margin-top: 34px; }
.about-head { font-weight: 500; font-size: clamp(32px, 3.6vw, 44px); letter-spacing: -.03em; color: var(--ink); margin-top: 22px; }
@media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; gap: 40px; } }
@media (max-width: 640px) {
  .about-grid { gap: 30px; }
  .about-grid img { aspect-ratio: 4 / 5; margin: 0 calc(-1 * var(--gut)); width: calc(100% + 2 * var(--gut)); }
}

/* ---------- CV ledger ---------- */
.cv-head { display: flex; align-items: baseline; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cv-ledger { display: flex; flex-direction: column; margin-top: 64px; }
.cv-ledger > div {
  display: grid; grid-template-columns: 220px 1fr; gap: 32px;
  padding: 30px 0; border-top: 1px solid var(--hair);
}
.cv-ledger > div:last-child { border-bottom: 1px solid var(--hair); }
.cv-ledger .lab { font-size: 11px; letter-spacing: .24em; color: var(--meta); }
.cv-ledger .val { font-size: 13px; line-height: 2; color: var(--ink2); }
.cv-ledger .val em { font-family: var(--serif); font-style: italic; color: var(--ink); }
@media (max-width: 720px) { .cv-ledger > div { grid-template-columns: 1fr; gap: 8px; } }

/* ---------- footer ---------- */
footer.site {
  position: relative; margin-top: 14vh; padding: 80px var(--gut) 44px;
}
footer.site .grainfield {
  position: absolute; inset: 0; background: var(--grainfoot); opacity: .3; pointer-events: none;
  mask-image: url("/assets/img/g5-foot.png");
  mask-size: 96px 159px; mask-repeat: repeat-x; mask-position: left bottom;
  -webkit-mask-image: url("/assets/img/g5-foot.png");
  -webkit-mask-size: 96px 159px; -webkit-mask-repeat: repeat-x; -webkit-mask-position: left bottom;
}
@keyframes grainDrift { to { mask-position: 96px bottom; -webkit-mask-position: 96px bottom; } }
footer.site .grainfield.drift { animation: grainDrift 18s linear infinite; }
footer.site.plain { margin-top: 0; padding: 36px var(--gut); border-top: 1px solid var(--hair); }
footer.site.plain .grainfield { display: none; }
footer.site .inner {
  position: relative; display: flex; justify-content: space-between; align-items: baseline;
  flex-wrap: wrap; gap: 16px; font-size: 12px; color: var(--meta);
  max-width: 1160px; margin: 0 auto;
}
footer.site .inner .fine { color: var(--faint); }

/* ---------- reduced motion: everything honors it ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .hero canvas { animation: none !important; }
}