@font-face {
  font-family: "Schibsted Grotesk";
  src: url("fonts/schibsted-grotesk-latin-wght-normal.woff2") format("woff2");
  font-weight: 400 900;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

:root {
  --bg: #f2f0ea;
  --surface: #fbfaf7;
  --ink: #14171a;
  --muted: #666b6f;
  --line: #d9d5ca;
  --pass: #168a55;
  --fail: #cf3f37;
  --warn: #b57a12;
  --stage: #1b1f22;
  --radius: 20px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --bg: #0e1113;
    --surface: #161a1d;
    --ink: #ecebe6;
    --muted: #8d9296;
    --line: #262c30;
    --pass: #35c07e;
    --fail: #f0645b;
    --warn: #e0a23a;
    --stage: #0b0d0f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1113;
  --surface: #161a1d;
  --ink: #ecebe6;
  --muted: #8d9296;
  --line: #262c30;
  --pass: #35c07e;
  --fail: #f0645b;
  --warn: #e0a23a;
  --stage: #0b0d0f;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font:
    16px/1.5 "Schibsted Grotesk",
    system-ui,
    -apple-system,
    "Segoe UI",
    "Noto Sans TC",
    sans-serif;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
a {
  color: inherit;
  text-underline-offset: 3px;
}
button,
select,
input {
  font: inherit;
  color: inherit;
}

.top {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px clamp(16px, 4vw, 40px);
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.mark rect:first-child {
  fill: var(--ink);
}
.mark circle {
  fill: var(--bg);
}
.mark rect:last-child {
  fill: var(--pass);
}
.mark {
  width: 30px;
  height: 30px;
}
.tagline {
  margin: 0;
  color: var(--muted);
  flex: 1;
}
.tools {
  display: flex;
  gap: 8px;
  align-items: center;
}
.mini {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px 10px;
  height: 36px;
  cursor: pointer;
}
.mini.icon {
  padding: 0 12px;
  font-size: 0.9rem;
}

main {
  flex: 1;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px) 40px;
}
.lede {
  font-size: clamp(1.25rem, 2.6vw, 1.9rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 600;
  max-width: 30ch;
  margin: 8px 0 28px;
}

.bench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 28px;
  align-items: start;
}
.stage-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.stage {
  position: relative;
  background: var(--stage);
  border-radius: var(--radius);
  overflow: hidden;
  width: min(100%, 560px);
  margin: 0 auto;
  aspect-ratio: 1 / 1;
  box-shadow:
    0 0 0 1px var(--line),
    0 0 0 0 transparent;
  transition: box-shadow 0.35s var(--ease);
}
.stage[data-ready="true"] {
  box-shadow:
    0 0 0 3px var(--pass),
    0 12px 40px -12px color-mix(in srgb, var(--pass) 60%, transparent);
}
.stage::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: conic-gradient(
    from 0deg,
    color-mix(in srgb, var(--pass) 85%, transparent) calc(var(--hold, 0) * 360deg),
    transparent 0
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box exclude,
    linear-gradient(#000 0 0);
  mask:
    linear-gradient(#000 0 0) content-box exclude,
    linear-gradient(#000 0 0);
  padding: 4px;
}
#view {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: none;
}
.stage[data-state="live"] #view,
.stage[data-state="adjust"] #view {
  display: block;
}
.stage[data-state="adjust"] {
  cursor: grab;
  touch-action: none;
}
.stage[data-state="adjust"]:active {
  cursor: grabbing;
}
.placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 12px;
  color: #9aa0a4;
  text-align: center;
  padding: 24px;
}
.stage:not([data-state="idle"]) .placeholder {
  display: none;
}
.placeholder svg {
  width: 46%;
  fill: none;
  stroke: #5d656a;
  stroke-width: 2;
  stroke-dasharray: 5 6;
}
.placeholder p {
  margin: 0;
  font-size: 0.9rem;
  max-width: 30ch;
}
.hud {
  position: absolute;
  left: 12px;
  bottom: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  pointer-events: none;
}
.hud span {
  background: color-mix(in srgb, #000 70%, transparent);
  color: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.85rem;
  backdrop-filter: blur(6px);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
button.primary,
button.ghost {
  border-radius: 12px;
  padding: 11px 18px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--ink);
  transition:
    transform 0.15s var(--ease),
    background 0.2s,
    opacity 0.2s;
}
button.primary {
  background: var(--ink);
  color: var(--bg);
}
button.ghost {
  background: transparent;
}
button:hover:not(:disabled) {
  transform: translateY(-1px);
}
button:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
}
button:disabled {
  opacity: 0.45;
  cursor: default;
}
:focus-visible {
  outline: 3px solid var(--pass);
  outline-offset: 2px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.field {
  display: grid;
  gap: 6px;
}
.field label {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.field select {
  width: 100%;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg);
  padding: 0 10px;
}
.field.inline {
  display: flex;
  align-items: center;
  gap: 10px;
}
.field.inline select {
  width: auto;
}
.custom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.custom label {
  display: grid;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--muted);
}
.custom input {
  height: 38px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg);
  padding: 0 8px;
  font-family: "IBM Plex Mono", monospace;
}
.spec-card {
  font-size: 0.88rem;
  color: var(--muted);
  display: grid;
  gap: 6px;
}
.spec-card strong {
  color: var(--ink);
  font-family: "IBM Plex Mono", monospace;
  font-weight: 500;
}
.spec-card p {
  margin: 0;
}
.rules-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 6px 0 -4px;
  font-weight: 600;
}
.rules {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}
.rule {
  display: grid;
  grid-template-columns: 14px 1fr auto;
  gap: 4px 10px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  align-items: center;
}
.rule:first-child {
  border-top: 0;
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--muted);
  opacity: 0.45;
  transition:
    background 0.25s,
    transform 0.25s var(--ease),
    opacity 0.25s;
}
.rule[data-status="pass"] .dot {
  background: var(--pass);
  opacity: 1;
  transform: scale(1.15);
}
.rule[data-status="fail"] .dot {
  background: var(--fail);
  opacity: 1;
}
.label {
  font-size: 0.95rem;
}
.tag {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 6px;
  padding: 1px 5px;
  margin-left: 6px;
  vertical-align: 2px;
  cursor: help;
}
.tag.spec {
  color: var(--pass);
  border-color: color-mix(in srgb, var(--pass) 45%, var(--line));
}
.val {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 500;
  font-size: 0.95rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.rule[data-status="pass"] .val {
  color: var(--pass);
}
.rule[data-status="fail"] .val {
  color: var(--fail);
}
.need {
  grid-column: 2 / 4;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: var(--muted);
}
.bg-line {
  grid-column: 2 / 4;
  font-size: 0.8rem;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
}

.result {
  margin-top: 36px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.result h2 {
  margin: 0 0 16px;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
}
.result-grid {
  display: grid;
  grid-template-columns: minmax(0, 340px) 1fr;
  gap: 28px;
  align-items: start;
}
#sheetView {
  width: 100%;
  height: auto;
  border-radius: 6px;
  background: #fff;
  box-shadow:
    0 0 0 1px var(--line),
    0 18px 40px -20px rgba(0, 0, 0, 0.5);
}
.result-side {
  display: grid;
  gap: 14px;
}
.result-side .controls {
  justify-content: flex-start;
}
.result.show #sheetView {
  animation: slide 0.5s var(--ease);
}
@keyframes slide {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
}
.muted {
  color: var(--muted);
  font-size: 0.88rem;
  margin: 0;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 24px 16px 32px;
}
footer p {
  margin: 4px 0;
}

@media (max-width: 860px) {
  .bench {
    grid-template-columns: 1fr;
  }
  .tagline {
    display: none;
  }
  .top {
    justify-content: space-between;
  }
  .result-grid {
    grid-template-columns: 1fr;
  }
  #sheetView {
    max-width: 320px;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}