:root {
  --bg: #101214;
  --text: rgba(255,255,255,0.88);
  --text-dim: rgba(255,255,255,0.5);
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.16);
  --accent: #95a4af;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: linear-gradient(180deg, #0f1113 0%, #121518 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter",
    "Helvetica Neue", "PingFang TC", "Noto Sans TC", sans-serif;
}

body {
  min-height: 100vh;
  display: grid;
  place-items: start center;
  padding: 40px 24px;
}

.shell {
  width: min(1280px, 100%);
  display: grid;
  gap: 20px;
}

.top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

.layout {
  display: grid;
  grid-template-columns: minmax(360px, 460px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.main,
.panel-right {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255,255,255,0.02);
}

.main {
  padding: 24px;
}

.panel-right {
  padding: 16px;
  min-height: 760px;
}

.headline {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.headline h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 520;
  letter-spacing: 0.02em;
}

.headline p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

.controls {
  display: grid;
  gap: 16px;
}

.row {
  display: grid;
  grid-template-columns: 110px 1fr 112px;
  align-items: center;
  gap: 14px;
}

.label {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.value {
  text-align: right;
  font-size: 13px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

input[type="range"],
select {
  width: 100%;
  appearance: none;
  background: transparent;
  font: inherit;
  color: var(--text);
}

input[type="range"] {
  height: 28px;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 1px;
  background: var(--line-strong);
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  margin-top: -5.5px;
}

input[type="range"]::-moz-range-track {
  height: 1px;
  background: var(--line-strong);
}

input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
}

select {
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 12px;
  background: rgba(255,255,255,0.02);
  outline: none;
}

option {
  background: #121518;
  color: var(--text);
}

.buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
      margin-top: 6px;
}

button {
  height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

button.primary {
  border-color: var(--line-strong);
  background: rgba(255,255,255,0.04);
}

.status {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  display: grid;
  gap: 6px;
}

.metric span:first-child {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.metric span:last-child {
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.notes {
  margin-top: 18px;
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.7;
}

#vizCanvas {
  width: 100%;
  height: 720px;
  display: block;
  border-radius: 16px;
  background:
    radial-gradient(circle at 50% 50%, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 28%, rgba(255,255,255,0) 62%),
    linear-gradient(180deg, rgba(255,255,255,0.02) 0%, rgba(255,255,255,0.01) 100%);
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .panel-right {
    min-height: unset;
  }

  #vizCanvas {
    height: 520px;
  }
}

@media (max-width: 700px) {
  body {
    padding: 24px 16px;
  }

  .row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .value {
    text-align: left;
  }
}