:root {
  color-scheme: dark;
  --bg: #071019;
  --panel: rgba(10, 24, 36, 0.86);
  --panel-strong: rgba(8, 18, 28, 0.96);
  --line: rgba(97, 223, 255, 0.22);
  --line-strong: rgba(97, 223, 255, 0.48);
  --text: #eef9ff;
  --muted: #91a8b5;
  --cyan: #4ae4ff;
  --gold: #f0bd58;
  --danger: #ff6d88;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 12%, rgba(74, 228, 255, 0.16), transparent 30%),
    radial-gradient(circle at 88% 72%, rgba(240, 189, 88, 0.14), transparent 32%),
    linear-gradient(135deg, #03070d 0%, #071019 45%, #0d1720 100%);
  color: var(--text);
  font-family:
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 228, 255, 0.05) 1px, transparent 1px);
  background-size: 100% 7px, 72px 72px;
  opacity: 0.42;
}

button,
select,
textarea {
  font: inherit;
}

.workspace {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(360px, 0.85fr) minmax(520px, 1.15fr);
  gap: 22px;
  width: min(1480px, calc(100vw - 40px));
  min-height: calc(100vh - 40px);
  margin: 20px auto;
}

.panel {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.input-panel {
  display: flex;
  flex-direction: column;
  padding: 34px;
}

.output-panel {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: calc(100vh - 40px);
  background: var(--panel-strong);
}

.eyebrow {
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 660px;
  margin: 14px 0 12px;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 0.98;
  letter-spacing: 0;
}

.lead {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.field {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.field span {
  color: #c6dbe5;
  font-size: 14px;
  font-weight: 800;
}

select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(1, 8, 14, 0.72);
  color: var(--text);
  outline: none;
}

select:focus,
textarea:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px rgba(74, 228, 255, 0.12);
}

select {
  height: 46px;
  padding: 0 12px;
}

textarea {
  min-height: 330px;
  resize: vertical;
  padding: 16px;
  line-height: 1.65;
}

.actions,
.output-actions,
.tabs {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

button {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 16px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.055);
  cursor: pointer;
}

button:hover {
  border-color: var(--line-strong);
  background: rgba(74, 228, 255, 0.12);
}

.primary {
  border-color: rgba(240, 189, 88, 0.78);
  background: linear-gradient(135deg, rgba(240, 189, 88, 0.88), rgba(74, 228, 255, 0.42));
  color: #061019;
  font-weight: 950;
}

.secondary {
  color: #cfe7f1;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: auto;
  padding-top: 24px;
}

.metrics div {
  min-height: 86px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.04);
}

.metrics strong,
.metrics span {
  display: block;
}

.metrics strong {
  color: var(--gold);
  font-size: 18px;
}

.metrics span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.tabs button {
  min-height: 36px;
  padding: 0 12px;
  color: #bad3dd;
}

.tabs button.is-active {
  border-color: rgba(240, 189, 88, 0.72);
  color: var(--gold);
  background: rgba(240, 189, 88, 0.12);
}

pre {
  overflow: auto;
  margin: 0;
  padding: 24px;
  white-space: pre-wrap;
  color: #dff7ff;
  font-family:
    "SFMono-Regular",
    Consolas,
    "Liberation Mono",
    monospace;
  font-size: 14px;
  line-height: 1.68;
}

.status {
  min-height: 40px;
  padding: 10px 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.status[data-tone="ok"] {
  color: var(--cyan);
}

.status[data-tone="warn"] {
  color: var(--danger);
}

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: 1fr;
    width: min(100vw - 24px, 760px);
    margin: 12px auto;
  }

  .output-panel {
    min-height: 760px;
  }

  .input-panel {
    padding: 24px;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .toolbar {
    align-items: flex-start;
    flex-direction: column;
  }
}