/* KAFD twin UI. Colour tokens follow the KAFD palette in data/palette.json (dark teal ground, sand-gold accent). */
:root {
  --bg: #0f2a2e; --panel: rgba(10, 28, 31, 0.82); --line: rgba(201, 169, 107, 0.28); --ink: #f4efe6; --dim: #a9b4b1;
  --accent: #c9a96b; --accent-ink: #10201f; --metro1: #00aee6; --metro4: #ffd009; --metro6: #7f00ff;
  --f-title: 'Bebas Neue', Impact, sans-serif; --f-mono: 'JetBrains Mono', ui-monospace, monospace;
  --f-text: 'JetBrains Mono', 'IBM Plex Sans Arabic', 'Noto Sans SC', ui-monospace, monospace;
}
html[lang="ar"] { --f-text: 'IBM Plex Sans Arabic', 'JetBrains Mono', sans-serif; --f-title: 'IBM Plex Sans Arabic', 'Bebas Neue', sans-serif; }
html[lang="zh"] { --f-text: 'Noto Sans SC', 'JetBrains Mono', sans-serif; --f-title: 'Noto Sans SC', 'Bebas Neue', sans-serif; }
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--bg); color: var(--ink); font: 13px/1.45 var(--f-text); -webkit-tap-highlight-color: transparent; }
#viewport, #viewport canvas { position: fixed; inset: 0; width: 100%; height: 100%; touch-action: none; display: block; }
button, select, input { font: inherit; color: inherit; }
button, select { background: rgba(255, 255, 255, 0.06); border: 1px solid var(--line); padding: 8px 10px; min-height: 36px; cursor: pointer; border-radius: 2px; }
button:hover { border-color: var(--accent); }
button.on, button.accent { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
select option { background: #0f2a2e; }

/* loader */
#loader { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; background: var(--bg); transition: opacity .6s ease; }
#loader.done { opacity: 0; pointer-events: none; }
#loader .lw { width: min(320px, 80vw); text-align: center; }
#loader svg { width: 100%; overflow: visible; }
#loader .sk path { fill: none; stroke: var(--accent); stroke-width: 1.4; stroke-dasharray: 600; stroke-dashoffset: 600; animation: draw 2.4s ease forwards; }
#loader .avl { fill: #ff2a14; animation: blink 1.5s steps(1) infinite; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes blink { 0%, 33% { opacity: 1; } 34%, 100% { opacity: 0.1; } }
#loader .track { height: 3px; background: rgba(255, 255, 255, 0.1); margin-top: 10px; }
#bar { height: 100%; width: 0; background: var(--accent); transition: width .3s; }
#loadmsg { font-family: var(--f-mono); letter-spacing: .08em; color: var(--dim); margin: 14px 0 0; }

/* header */
.top { position: fixed; top: 0; left: 0; right: 0; z-index: 10; display: flex; justify-content: space-between; align-items: flex-start; gap: 12px;
  padding: max(12px, env(safe-area-inset-top)) 16px 12px; background: linear-gradient(to bottom, rgba(8, 22, 24, .75), rgba(8, 22, 24, 0)); pointer-events: none; }
.top > * { pointer-events: auto; }
.brand { display: flex; gap: 12px; align-items: center; min-width: 0; }
.home { font: 400 22px/1 var(--f-title); letter-spacing: .08em; color: var(--accent-ink); background: var(--accent); padding: 8px 9px 6px; text-decoration: none; }
.brand h1 { margin: 0; font: 400 clamp(20px, 2.6vw, 30px)/1 var(--f-title); letter-spacing: .03em; }
.brand p { margin: 3px 0 0; color: var(--dim); font-size: 11px; letter-spacing: .04em; }
.tools { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.langs { display: flex; }
.langs button { min-width: 44px; padding: 6px 8px; }
.btn.ghost { text-decoration: none; display: inline-flex; align-items: center; background: rgba(0, 0, 0, .25); border: 1px solid var(--line); padding: 6px 10px; min-height: 36px; color: var(--ink); }
.readout { position: fixed; z-index: 10; left: 16px; top: 86px; font-family: var(--f-mono); pointer-events: none; text-shadow: 0 1px 3px rgba(0, 0, 0, .6); }
html[dir="rtl"] .readout { left: auto; right: 16px; }
#clock { font: 400 46px/1 var(--f-title); letter-spacing: .04em; color: var(--ink); }
#sunline { color: var(--dim); font-size: 11px; }

/* dock: right column on desktop, bottom sheet on phones */
#dock { position: fixed; z-index: 12; right: 16px; top: 86px; bottom: 16px; width: 300px; overflow: auto; background: var(--panel); border: 1px solid var(--line);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); padding: 12px 14px 16px; scrollbar-width: thin; }
html[dir="rtl"] #dock { right: auto; left: 16px; }
#dock h2 { font: 400 15px/1 var(--f-title); letter-spacing: .12em; color: var(--accent); margin: 14px 0 8px; }
#dock section:first-of-type h2 { margin-top: 2px; }
#dock .row { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 8px; }
#dock .row button, #dock .row select { padding: 6px 8px; min-height: 34px; }
#dock .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; }
#dock label { display: flex; align-items: center; gap: 8px; padding: 5px 0; cursor: pointer; }
#dock input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); }
.sw { width: 18px; height: 4px; display: inline-block; }
.sw.m { background: linear-gradient(90deg, var(--metro1) 33%, var(--metro4) 33% 66%, var(--metro6) 66%); }
.sw.mo { background: #0b9a92; } .sw.t { background: linear-gradient(90deg, #fff 50%, #ff3020 50%); } .sw.h { background: #7aa7d8; }
.sw.a { background: #ff2a14; } .sw.p { background: #6d8a3a; } .sw.l { background: var(--ink); }
input[type="range"] { width: 100%; accent-color: var(--accent); height: 28px; }
.ticks { display: flex; justify-content: space-between; color: var(--dim); font: 10px var(--f-mono); margin-top: -4px; }
.note, .hint { color: var(--dim); font-size: 11px; margin: 8px 0 0; }
.about summary { cursor: pointer; color: var(--accent); margin-top: 12px; }
.about p { color: var(--dim); font-size: 11px; }
#sheet-toggle { display: none; }

/* labels */
#labels { position: fixed; inset: 0; z-index: 5; pointer-events: none; overflow: hidden; }
.label { position: absolute; left: 0; top: 0; pointer-events: auto; white-space: nowrap; font: 500 11px/1 var(--f-text); padding: 4px 7px 4px 6px; min-height: 0;
  background: rgba(10, 28, 31, .78); border: 1px solid var(--line); color: var(--ink); border-left: 3px solid var(--accent); }
.label::after { content: ''; position: absolute; left: 50%; bottom: -9px; width: 1px; height: 8px; background: var(--accent); }

/* info card */
#card { position: fixed; z-index: 14; left: 16px; bottom: 16px; width: min(380px, calc(100vw - 32px)); background: var(--panel); border: 1px solid var(--line);
  border-top: 3px solid var(--accent); padding: 14px 16px; transform: translateY(130%); transition: transform .35s ease; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
html[dir="rtl"] #card { left: auto; right: 16px; }
#card.open { transform: none; }
#card h3 { margin: 0 28px 4px 0; font: 400 26px/1 var(--f-title); letter-spacing: .02em; }
#card .alt { margin: 0 0 8px; color: var(--dim); }
#card dl { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; margin: 8px 0; }
#card dt { color: var(--accent); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
#card dd { margin: 0; }
#card p { color: var(--dim); margin: 6px 0; }
#card .x { position: absolute; top: 8px; right: 8px; min-height: 30px; padding: 2px 9px; }
html[dir="rtl"] #card .x { right: auto; left: 8px; }
#card .more { color: var(--accent); text-decoration: none; font-weight: 500; }

@media (max-width: 760px) {
  .brand p { display: none; }
  .readout { top: 64px; } #clock { font-size: 32px; }
  #dock { top: auto; left: 0; right: 0; bottom: 0; width: auto; max-height: 64vh; transform: translateY(calc(100% - 132px)); transition: transform .3s ease;
    border-left: 0; border-right: 0; padding-bottom: max(16px, env(safe-area-inset-bottom)); }
  html[dir="rtl"] #dock { left: 0; }
  #dock.open { transform: none; }
  #sheet-toggle { display: block; width: 100%; min-height: 26px; border: 0; background: none; padding: 4px 0 8px; }
  #sheet-toggle span { display: block; margin: 0 auto; width: 48px; height: 4px; background: var(--dim); border-radius: 2px; }
  #card { bottom: 140px; }
  .tools .btn.ghost { display: none; }
}

/* clean frames for screenshots and recordings: ?clean */
body.clean .top, body.clean .readout, body.clean #dock, body.clean #labels, body.clean #card { display: none !important; }