/* En Armonía Studio — layout and components (R2: stages). Values come from tokens.css. */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  background: var(--paper); color: var(--ink);
  font-family: var(--font-text); font-size: var(--t-body); line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
:lang(zh) { font-family: var(--font-cjk); }
h1, h2, h3, .display { font-family: var(--font-display); font-weight: 300; color: var(--ink-2); }
h1:lang(zh), h2:lang(zh), h3:lang(zh) { font-family: var(--font-cjk); font-weight: 400; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: var(--ink-2); text-decoration-color: var(--line); text-underline-offset: .15em; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.label { font-family: var(--font-text); font-size: var(--t-label); letter-spacing: var(--track-label); text-transform: uppercase; color: var(--muted); }
:lang(zh) .label, .label:lang(zh) { letter-spacing: .08em; }

/* Paper grain (placeholder; real scans later) */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .5;
  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='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .2 0 0 0 0 .18 0 0 0 0 .15 0 0 0 .05 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
main, .header, .explore, .lab { position: relative; z-index: 1; }

/* ---------- Header: receives the hero's mark and name (--p goes 0 → 1 over the hero) ---------- */
.header {
  --p: 0;
  position: fixed; inset: 0 0 auto 0; z-index: 20; height: 56px;
  display: flex; align-items: center; gap: var(--s3); padding: 0 var(--gutter);
  background: color-mix(in oklab, var(--paper) calc(var(--p) * 90%), transparent);
  backdrop-filter: blur(calc(var(--p) * 10px));
  border-bottom: 1px solid color-mix(in oklab, var(--line) calc(var(--p) * 100%), transparent);
}
.header .home { display: flex; align-items: center; gap: var(--s3); text-decoration: none; opacity: var(--p); transform: translateY(calc((1 - var(--p)) * 8px)); }
.header .mark { width: 24px; height: 24px; color: var(--accent); }
.header .wordmark { font-family: var(--font-display); font-size: 1.15rem; color: var(--ink-2); white-space: nowrap; }
.header .spacer { flex: 1; }
.header .explore-toggle, .header .lang-toggle { opacity: var(--p); pointer-events: none; }
.header.is-on .explore-toggle, .header.is-on .lang-toggle { pointer-events: auto; }

.explore-toggle { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border-radius: var(--r-chip); border: 1px solid var(--line); font-size: var(--t-small); background: var(--paper); }
.explore-toggle .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--line); transition: background var(--d-fast); }
.explore-toggle.is-active .dot { background: var(--filter-color, var(--accent)); }
.explore-toggle[aria-expanded="true"] { background: var(--ink-2); color: var(--paper); border-color: var(--ink-2); }

.lang-toggle { display: flex; gap: 2px; border: 1px solid var(--line); border-radius: var(--r-chip); padding: 2px; }
.lang-toggle button { padding: 3px 9px; border-radius: var(--r-chip); font-size: var(--t-label); letter-spacing: .08em; color: var(--muted); }
.lang-toggle button[aria-pressed="true"] { background: var(--ink-2); color: var(--paper); }

/* ---------- Explore popover ---------- */
.explore {
  position: fixed; top: 64px; right: var(--gutter); z-index: 19; width: min(320px, calc(100vw - 2 * var(--gutter)));
  padding: var(--s4); background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r-tile);
  box-shadow: 0 12px 40px color-mix(in oklab, var(--ink) 18%, transparent);
  display: grid; gap: var(--s4);
}
.explore[hidden] { display: none; }
.explore-group { display: grid; gap: var(--s2); }
.explore-areas, .explore-langs { display: flex; flex-wrap: wrap; gap: var(--s2); }
.explore-areas button { --c: var(--area-color); display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px 6px 6px; border-radius: 8px; border: 1px solid var(--line); font-size: var(--t-small); background: var(--paper); }
.explore-areas button .seal { width: 20px; height: 20px; }
.explore-areas button[aria-pressed="true"] { border-color: var(--c); background: color-mix(in oklab, var(--c) 12%, var(--paper)); }
.explore-langs button { padding: 5px 10px; border-radius: 8px; border: 1px solid var(--line); font-size: var(--t-small); background: var(--paper); }
.explore-langs button[aria-pressed="true"] { border-color: var(--ink-2); background: var(--ink-2); color: var(--paper); }
.explore-clear { justify-self: start; font-size: var(--t-small); color: var(--muted); text-decoration: underline; text-underline-offset: .15em; }

/* ---------- Seals (indicators) ---------- */
.seal { --c: var(--seal-color, var(--accent)); display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 5px;
  background: var(--c); color: var(--paper); font-size: 15px; line-height: 1; flex: none;
  box-shadow: inset 0 0 0 1.5px color-mix(in oklab, var(--paper) 35%, transparent); }
:root[data-marks="glyph"] .seal { background: none; color: var(--c); box-shadow: none; font-size: 20px; }

/* ---------- Hero ---------- */
.hero { min-height: 100svh; display: grid; place-items: center; text-align: center; padding: var(--s8) var(--gutter) var(--s7); }
.hero-inner { max-width: var(--measure); }
.hero .mark { width: 88px; height: 88px; color: var(--accent); margin: 0 auto var(--s6); display: block; }
.hero h1 { font-size: var(--t-display); line-height: 1.02; letter-spacing: .005em; }
.hero .rule { width: 48px; height: 1px; background: var(--life, var(--accent)); margin: var(--s6) auto; }
:root[data-life="none"] .hero .rule { background: var(--accent); }
.hero-line { font-family: var(--font-display); font-size: clamp(1.15rem, 3.2vw, 1.5rem); color: var(--ink); font-style: italic; }
.hero-line:empty { display: none; }
.scroll-hint { margin-top: var(--s8); color: var(--muted); }
.scroll-hint::after { content: ""; display: block; width: 1px; height: 40px; margin: var(--s3) auto 0; background: linear-gradient(var(--accent), transparent); animation: drift var(--d-drift) var(--ease) infinite; }
@keyframes drift { 0%, 100% { transform: translateY(0); opacity: .9; } 50% { transform: translateY(8px); opacity: .4; } }
/* The hero's mark and name fade as they "hand over" to the header */
.hero .hero-mark, .hero .hero-name { opacity: calc(1 - var(--p, 0)); transform: translateY(calc(var(--p, 0) * -12px)); }

/* ---------- Stream: shared ground + a thread behind the stages ---------- */
.stream { position: relative; padding: var(--s6) 0 var(--s9); }
.stream .thread { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; }
.stream .thread path { fill: none; stroke: var(--thread, var(--accent)); stroke-width: 1; opacity: .35; stroke-dasharray: 4 6; }
:root[data-life="mango"] .stream .thread path, :root[data-life="green"] .stream .thread path { stroke: var(--life); }
.stages { position: relative; z-index: 1; display: grid; gap: var(--s2); padding: 0 var(--gutter); max-width: 620px; margin: 0 auto; }
.no-results { text-align: center; padding: var(--s6) var(--gutter) 0; }

/* ---------- Stage: a square; everything about one artist happens inside it ---------- */
.stage {
  --c: var(--area-color, var(--accent)); --c2: var(--area-color-2, var(--c));
  position: relative; aspect-ratio: 1; width: 100%; overflow: hidden; border-radius: var(--r-tile);
  isolation: isolate; scroll-margin-top: 72px;
  transition: opacity var(--d-base) var(--ease);
}
.stage.is-hidden { display: none; }
/* Stages overlap a little and alternate a slight offset, so they read as one space, not a list */
.stage + .stage { margin-top: calc(-1 * var(--s4)); }
.stage:nth-child(odd) { transform: translateX(-2%); }
.stage:nth-child(even) { transform: translateX(2%); }
@media (min-width: 620px) { .stage:nth-child(odd) { transform: translateX(-6%); } .stage:nth-child(even) { transform: translateX(6%); } }

/* Media layers: paper (switchable) → fog (blurred still, until the loop arrives) → glow → cut-out video */
.stage .media { position: absolute; inset: 0; z-index: 0; background: var(--paper-2); }
:root[data-paper="paper001"] .stage .media { background: var(--paper-2) url("../textures/paper001.jpg") center / cover; }
:root[data-paper="paper003"] .stage .media { background: var(--paper-2) url("../textures/paper003.jpg") center / cover; }
:root[data-paper="paper006"] .stage .media { background: var(--paper-2) url("../textures/paper006.jpg") center / cover; }
.stage .fog { position: absolute; inset: -10%; background-size: cover; background-position: center; filter: blur(18px) saturate(.9); transform: scale(1.1); opacity: .9;
  transition: opacity var(--d-slow) var(--ease); }
.stage[data-load="light"] .fog, .stage[data-load="full"] .fog { opacity: 0; }
/* A soft glow of the area colour behind the person, on the side they occupy */
.stage .wash { position: absolute; inset: 0; mix-blend-mode: multiply; opacity: .9;
  background: radial-gradient(55% 60% at 32% 62%, color-mix(in oklab, var(--c) 28%, transparent), transparent 70%); }
.stage[data-facing="left"] .wash { background: radial-gradient(55% 60% at 68% 62%, color-mix(in oklab, var(--c) 28%, transparent), transparent 70%); }
:root[data-paper="none"] .stage .wash { opacity: 1; background:
  linear-gradient(to top, color-mix(in oklab, var(--paper) 60%, transparent), transparent 40%),
  radial-gradient(55% 60% at 32% 62%, color-mix(in oklab, var(--c) 30%, transparent), transparent 70%); }
.stage video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity var(--d-slow) var(--ease); }
.stage[data-load="light"] video, .stage[data-load="full"] video { opacity: 1; }
.stage .poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: opacity var(--d-slow) var(--ease); }
.stage[data-load="light"] .poster, .stage[data-load="full"] .poster { opacity: 0; }

/* The person is a button: tap to open the stage's reveals */
.stage .person { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; border-radius: 0; }
.stage .person:focus-visible { outline-offset: -4px; }

/* Name: set in the space the person faces. facing=left → person on left, name on right. */
.stage .name {
  position: absolute; z-index: 2; top: 8%; max-width: 58%; pointer-events: none;
  font-family: var(--font-display); font-weight: 300; font-size: clamp(2rem, 9.5vw, 3.6rem); line-height: .95; letter-spacing: -.01em;
  color: var(--ink-2); text-wrap: balance;
}
.stage[data-facing="right"] .name { right: 7%; text-align: right; }
.stage[data-facing="left"]  .name { left: 7%; text-align: left; }
.stage .name .first { display: block; font-style: italic; font-weight: 300; }
.stage .name .last  { display: block; }

/* Indicators: practice seals in a straight column, language marks in a row. Same side as the name. */
.stage .marks { position: absolute; z-index: 3; bottom: 8%; display: grid; gap: 6px; }
.stage[data-facing="right"] .marks { right: 7%; justify-items: end; }
.stage[data-facing="left"]  .marks { left: 7%; justify-items: start; }
.stage .practices { display: grid; grid-auto-flow: column; gap: 6px; }
.stage .practices button { display: grid; place-items: center; padding: 0; border-radius: 5px; }
.stage .langs { display: flex; gap: 6px; margin-top: 4px; }
.stage .langs button { font-size: var(--t-label); letter-spacing: .08em; color: var(--ink-2); padding: 2px 6px; border-radius: 4px; background: color-mix(in oklab, var(--paper) 70%, transparent); }
.stage .langs button:lang(zh) { letter-spacing: 0; }

/* Reveals: small pieces that appear in place. */
.stage .reveal {
  position: absolute; z-index: 4; max-width: 60%; padding: 8px 12px; border-radius: 10px;
  background: color-mix(in oklab, var(--paper) 92%, transparent); color: var(--ink); font-size: var(--t-small); line-height: 1.35;
  box-shadow: 0 6px 24px color-mix(in oklab, var(--ink) 16%, transparent);
  opacity: 0; transform: translateY(6px); transition: opacity var(--d-base) var(--ease), transform var(--d-base) var(--ease);
  pointer-events: none;
}
.stage .reveal.is-on { opacity: 1; transform: none; pointer-events: auto; }
.stage .reveal.tip { white-space: nowrap; }
.stage[data-facing="right"] .reveal.tip { right: 7%; }
.stage[data-facing="left"]  .reveal.tip { left: 7%; }
.stage .reveal.line { top: 8%; font-family: var(--font-display); font-style: italic; font-size: 1.05rem; color: var(--ink-2); background: none; box-shadow: none; padding: 0; max-width: 52%; }
.stage[data-facing="right"] .reveal.line { left: 7%; text-align: left; }
.stage[data-facing="left"]  .reveal.line { right: 7%; text-align: right; }
.stage .reveal.contacts { bottom: 8%; display: flex; gap: 8px; flex-wrap: wrap; background: none; box-shadow: none; padding: 0; max-width: 55%; }
.stage[data-facing="right"] .reveal.contacts { left: 7%; }
.stage[data-facing="left"]  .reveal.contacts { right: 7%; justify-content: flex-end; }
.stage .contact { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: var(--r-chip); background: var(--ink-2); color: var(--paper); text-decoration: none; font-size: var(--t-small);
  transition: transform var(--d-fast) var(--ease); }
.stage .contact:hover { transform: translateY(-1px); }
.stage .contact .ico { font-weight: 600; font-size: 12px; opacity: .85; }
/* staggered entrance */
.stage.is-open .reveal.line { transition-delay: 0ms; }
.stage.is-open .reveal.contacts { transition-delay: 120ms; }
.stage.is-open .reveal.tip { transition-delay: 0ms; }

/* Open state dims the name a little so the line reads, and the wash deepens */
.stage.is-open .name { opacity: .35; transition: opacity var(--d-base) var(--ease); }
.stage .name { transition: opacity var(--d-base) var(--ease); }

/* ---------- Footer ---------- */
.footer { text-align: center; padding: var(--s8) var(--gutter) var(--s9); color: var(--muted); font-size: var(--t-small); }
.footer .mark { width: 32px; height: 32px; color: var(--accent); margin: 0 auto var(--s4); display: block; }

/* ---------- Lab ---------- */
.lab { position: fixed; right: var(--s4); bottom: var(--s4); z-index: 30; }
.lab-toggle { width: 44px; height: 44px; border-radius: 50%; background: var(--ink-2); color: var(--paper); display: grid; place-items: center; font-size: 20px; box-shadow: 0 6px 20px color-mix(in oklab, var(--ink) 25%, transparent); }
.lab-panel { position: absolute; right: 0; bottom: 54px; width: 240px; padding: var(--s4); background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r-tile); display: none; gap: var(--s3); }
.lab.is-open .lab-panel { display: grid; }
.lab-panel label { display: grid; gap: 4px; font-size: var(--t-label); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.lab-panel select { font: inherit; font-size: var(--t-small); padding: 6px 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); color: var(--ink); letter-spacing: 0; text-transform: none; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .scroll-hint::after { animation: none; }
  .stage video { display: none; }              /* the still stands in; no autoplaying media */
  .stage .poster { opacity: 1 !important; }
  .stage .fog { filter: none; transform: none; }
  .stage .reveal { transition: none; }
}