:root {
  --bg-a: #f5eee5;
  --bg-b: #eff5f2;
  --ink: #1f2a30;
  --ink-soft: #4a5c66;
  --panel: #ffffffd9;
  --line: #c5d6d2;
  --accent: #0f8f95;
  --accent-2: #f58a3a;
  --danger: #b12e23;
  --shadow: 0 10px 32px rgba(34, 61, 72, 0.14);
  --button-height: 40px;

  --section-accent: #0f8f95;
  --section-accent-strong: #176f7a;
  --section-soft-start: #eff8f7;
  --section-soft-end: #e3f2f0;
  --section-soft-border: #8cb7b3;
  --section-soft-ink: #214047;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  padding-bottom: 64px;
  color: var(--ink);
  background: radial-gradient(130% 110% at 0% 0%, var(--bg-a), transparent),
    radial-gradient(120% 120% at 100% 10%, var(--bg-b), transparent),
    linear-gradient(170deg, #fdfaf7, #eaf4f1 70%, #f8fbfa);
  font-family: "Trebuchet MS", "Lucida Sans", "Gill Sans", sans-serif;
}

body.trace-open {
  padding-bottom: min(44vh, 420px);
}

h1,
h2 {
  margin: 0;
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  letter-spacing: 0.02em;
}

.bg-orb {
  position: fixed;
  border-radius: 999px;
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

.bg-orb-a {
  width: 280px;
  height: 280px;
  background: #ffd8b5;
  top: -70px;
  left: -80px;
}

.bg-orb-b {
  width: 360px;
  height: 360px;
  background: #bdebe4;
  right: -130px;
  top: 25%;
}

.page {
  position: relative;
  z-index: 1;
  width: min(1100px, 94vw);
  margin: 26px auto 36px;
  display: grid;
  gap: 18px;
}

.hero {
  background: linear-gradient(120deg, #ffffffea, #f8fffcde 70%);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--section-accent);
  font-weight: 700;
}

.lead {
  margin: 10px 0 0;
  color: var(--ink-soft);
  max-width: 68ch;
}

.meta {
  margin: 10px 0 0;
  color: #2f6670;
  font-size: 0.86rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow);
}

.panel h2 {
  font-size: 1.28rem;
}

.section-note {
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(230px, 280px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.workspace-content {
  display: grid;
  gap: 16px;
}

.lab-mode {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  margin-top: 12px;
}

.lab-mode button {
  width: 100%;
  min-height: var(--button-height);
  margin-top: 0;
  padding: 8px 10px;
  font-size: 0.82rem;
  line-height: 1.2;
  border-color: var(--section-soft-border);
  color: var(--section-soft-ink);
  background: linear-gradient(130deg, var(--section-soft-start), var(--section-soft-end));
}

.lab-mode button.active {
  border-color: var(--section-accent-strong);
  color: #ffffff;
  background: linear-gradient(120deg, var(--section-accent), var(--section-accent-strong));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.lab-subpanel {
  margin-top: 8px;
}

.lab-subpanel[hidden] {
  display: none !important;
}

.lab-sidebar {
  position: sticky;
  top: 14px;
}

.lab-nav-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 12px;
}

.lab-nav-grid button {
  margin-top: 0;
  border-color: var(--section-soft-border);
  color: var(--section-soft-ink);
  background: linear-gradient(130deg, var(--section-soft-start), var(--section-soft-end));
  text-align: left;
}

.lab-nav-grid button.active {
  border-color: var(--section-accent-strong);
  color: #ffffff;
  background: linear-gradient(120deg, var(--section-accent), var(--section-accent-strong));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

[data-lab-section][hidden] {
  display: none !important;
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.grid > .section-presets {
  grid-column: 1 / -1;
}

label,
legend {
  display: block;
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

fieldset {
  margin-top: 10px;
  border: 1px dashed #9fc4bf;
  border-radius: 12px;
  padding: 8px 10px;
}

fieldset label {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 5px;
  color: var(--ink);
}

input,
select,
textarea,
button {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 11px;
  font: inherit;
}

input[type='checkbox'] {
  width: auto;
  padding: 0;
  margin: 0;
  border: 0;
  accent-color: var(--section-accent);
  transform: translateY(1px);
  flex: 0 0 auto;
}

input,
select,
textarea {
  margin-top: 6px;
  background: #ffffff;
}

textarea {
  min-height: 106px;
  resize: vertical;
  font-family: "Cascadia Mono", "Consolas", monospace;
  font-size: 0.9rem;
}

button {
  min-height: var(--button-height);
  margin-top: 12px;
  cursor: pointer;
  font-weight: 700;
  border-color: var(--section-accent-strong);
  color: #ffffff;
  background: linear-gradient(120deg, var(--section-accent), var(--section-accent-strong));
  transition: transform 120ms ease, filter 120ms ease;
}

button:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--section-accent) 55%, white);
  outline-offset: 2px;
}

button:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
}

.preset-row,
.tool-row {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.section-presets {
  margin: 0;
}

.section-presets h3 {
  margin: 0;
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  letter-spacing: 0.02em;
  font-size: 1rem;
}

.section-presets .preset-row {
  margin-top: 10px;
}

.output {
  margin-top: 12px;
  min-height: 146px;
  max-height: 280px;
  overflow: auto;
  border: 1px solid #c6d8d4;
  border-radius: 12px;
  background: #f8fdfc;
  padding: 10px;
  font-family: "Cascadia Mono", "Consolas", monospace;
  font-size: 0.84rem;
  line-height: 1.4;
}

.output.error {
  border-color: #e2a6a1;
  color: var(--danger);
  background: #fff6f5;
}

.command-trace-dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 12;
}

.command-trace-shell {
  width: min(1100px, 94vw);
  margin: 0 auto;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 14px 14px 0 0;
  background: #ffffffeb;
  box-shadow: 0 -8px 24px rgba(34, 61, 72, 0.14);
  backdrop-filter: blur(4px);
}

.command-trace-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
}

.command-trace-toggle,
.command-trace-actions button {
  width: auto;
  min-height: 34px;
  margin-top: 0;
  padding: 6px 10px;
  font-size: 0.82rem;
}

.command-trace-toggle {
  flex: 0 0 auto;
}

.command-trace-last {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
  flex: 1 1 auto;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.command-trace-actions {
  display: flex;
  gap: 8px;
  flex: 0 0 auto;
}

.command-trace-panel {
  border-top: 1px solid #d0dedb;
  max-height: min(36vh, 340px);
  overflow: auto;
  padding: 10px;
}

.command-trace-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.trace-entry {
  border: 1px solid #d4e2df;
  border-radius: 10px;
  padding: 8px;
  background: #f9fdfc;
}

.trace-entry-heading {
  margin: 0;
  font-size: 0.82rem;
  color: #2f6670;
  font-weight: 700;
}

.trace-copy-block {
  position: relative;
  margin-top: 8px;
}

.trace-output-details {
  margin-top: 8px;
  border: 1px dashed #c8d9d5;
  border-radius: 8px;
  background: #f7fcfb;
}

.trace-output-summary {
  cursor: pointer;
  padding: 7px 10px;
  font-size: 0.8rem;
  color: #2f6670;
  font-weight: 700;
  user-select: none;
}

.trace-output-details[open] .trace-output-summary {
  border-bottom: 1px dashed #c8d9d5;
}

.trace-copy-icon {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 1;
  width: auto;
  min-height: 22px;
  margin-top: 0;
  padding: 2px 7px;
  border-radius: 6px;
  border-color: #94b3ad;
  color: #27424d;
  background: linear-gradient(130deg, #f6fcfb, #e8f3f1);
  font-size: 0.72rem;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease;
}

.trace-copy-block:hover .trace-copy-icon,
.trace-copy-block:focus-within .trace-copy-icon {
  opacity: 1;
  pointer-events: auto;
}

.trace-entry-command,
.trace-entry-inputs,
.trace-entry-output,
.trace-entry-error-text {
  margin: 0;
  padding: 8px 66px 8px 10px;
  border-radius: 8px;
  border: 1px solid #d4e2df;
  background: #ffffff;
  font-family: "Cascadia Mono", "Consolas", monospace;
  font-size: 0.78rem;
  line-height: 1.35;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.trace-entry-inputs {
  background: #f5fbfa;
}

.trace-entry-output {
  background: #f7fbff;
}

.trace-entry-error {
  border-color: #dfb3ae;
  background: #fff9f8;
}

.trace-entry-error-text {
  border-color: #e4b1aa;
  color: #a12b22;
  background: #fff5f3;
}

.trace-entry-empty {
  color: var(--ink-soft);
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .lab-sidebar {
    position: static;
  }

  .lab-nav-grid {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  }

  .grid,
  .preset-row,
  .tool-row {
    grid-template-columns: 1fr;
  }

  .page {
    margin-top: 14px;
  }

  .command-trace-bar {
    flex-wrap: wrap;
  }

  .command-trace-last {
    flex-basis: 100%;
    order: 3;
  }

  .command-trace-actions {
    margin-left: auto;
  }

  .command-trace-panel {
    max-height: 52vh;
  }

  body.trace-open {
    padding-bottom: 58vh;
  }
}