:root {
  color-scheme: dark;
  --bg: #0f1111;
  --panel: #171919;
  --panel-2: #1f2323;
  --line: #313636;
  --text: #f4f6f6;
  --muted: #aab1b1;
  --accent: #00c2a8;
  --accent-2: #b8ff39;
  --accent-3: #ffb000;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  min-height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  line-height: 1.55;
}

button,
input,
textarea,
select {
  font: inherit;
}

.app-shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  height: 100vh;
  min-height: 0;
  overflow: hidden;
}

.sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  min-height: 0;
  overflow: hidden;
  padding: 28px 22px;
  border-right: 1px solid var(--line);
  background: #141616;
}

.brand-block {
  display: grid;
  gap: 10px;
}

.eyebrow,
.section-kicker,
.panel-label {
  margin: 0;
  font-size: 12px;
  color: var(--accent-2);
  text-transform: uppercase;
}

.brand-block h1,
.page-head h2,
.panel-head h3 {
  margin: 0;
  line-height: 1.1;
}

.brand-block h1 {
  font-size: clamp(28px, 4vw, 36px);
}

.brand-copy,
.section-summary,
.feature-description,
.detail-block p,
.detail-block ul,
.detail-block ol {
  margin: 0;
  color: var(--muted);
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.project-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-width: 38px;
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  text-decoration: none;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.project-link:hover,
.project-link:focus-visible {
  border-color: var(--accent);
  background: rgba(0, 194, 168, 0.12);
  transform: translateY(-1px);
}

.project-link-disabled {
  cursor: default;
  color: #f4b4b4;
}

.project-link-disabled:hover {
  border-color: var(--line);
  background: var(--panel-2);
  transform: none;
}

.project-link svg {
  width: 18px;
  height: 18px;
}

.project-logo {
  display: block;
  width: 20px;
  height: 20px;
  object-fit: contain;
}

.project-logo-hf {
  width: 22px;
  height: 22px;
}

.project-logo-arxiv {
  width: 24px;
  height: 24px;
  padding: 3px;
  border-radius: 5px;
  background: #f2f4f7;
  box-sizing: border-box;
}

.project-link-text {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.section-nav {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

.nav-button,
.sample-button {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.nav-button {
  padding: 14px;
}

.nav-button:hover,
.nav-button:focus-visible,
.sample-button:hover,
.sample-button:focus-visible,
.ghost-button:hover,
.ghost-button:focus-visible {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.nav-button.active,
.sample-button.active {
  border-color: var(--accent);
  background: rgba(0, 194, 168, 0.12);
}

.nav-label,
.sample-title {
  display: block;
  font-weight: 600;
}

.nav-meta,
.sample-meta {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

.workspace {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 20px;
  min-height: 0;
  height: 100vh;
  overflow: hidden;
  padding: 28px;
}

.page-head {
  display: grid;
  gap: 18px;
}

.section-title {
  margin-top: 8px;
  font-size: clamp(28px, 4vw, 42px);
}

.sample-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.sample-button {
  padding: 14px;
}

.main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
  gap: 18px;
  min-height: 0;
  overflow: hidden;
}

.feature-panel,
.detail-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.feature-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-height: 0;
  overflow: hidden;
}

.panel-head {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.feature-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.single-view-stage[hidden],
.multi-view-stage[hidden],
.video-stage[hidden] {
  display: none;
}

.single-view-stage {
  min-height: 0;
}

.viewer-shell {
  position: relative;
  height: 100%;
  min-height: 0;
}

.viewer {
  height: 100%;
  min-height: 360px;
  background: #101111;
}

.viewer canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.viewer-status,
.mini-viewer-status {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(16, 17, 17, 0.72);
  color: var(--muted);
  text-align: center;
}

.viewer-status.is-hidden {
  display: none;
}

.feature-foot {
  display: grid;
  gap: 12px;
  padding: 16px 18px 18px;
  border-top: 1px solid var(--line);
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature-tag {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--muted);
  font-size: 13px;
}

.ghost-button {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
}

.multi-view-stage {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
  gap: 14px;
  min-height: 0;
  padding: 16px 18px 18px;
}

.mini-view-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  overflow: hidden;
}

.mini-view-card[hidden] {
  display: none;
}

.mini-view-meta {
  padding: 12px 12px 10px;
  border-bottom: 1px solid var(--line);
}

.mini-view-kicker {
  margin: 0;
  font-size: 11px;
  text-transform: uppercase;
  color: var(--accent-2);
}

.mini-view-title {
  margin: 6px 0 0;
  font-size: 17px;
  line-height: 1.2;
}

.mini-view-shell {
  position: relative;
}

.mini-viewer {
  min-height: 220px;
  background: #101111;
}

.mini-viewer canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.mini-viewer-status.is-hidden {
  display: none;
}

.video-stage {
  padding: 18px;
}

.video-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  max-width: 100%;
  margin: 0 auto;
  justify-content: center;
  align-items: flex-start;
}

.video-card {
  flex: 0 1 auto;
  width: min(var(--video-width, 100%), 100%);
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  overflow: hidden;
}

.video-card[hidden] {
  display: none;
}

.video-card-meta {
  padding: 12px 12px 10px;
  border-bottom: 1px solid var(--line);
}

.video-card-kicker {
  margin: 0;
  font-size: 11px;
  text-transform: uppercase;
  color: var(--accent-2);
}

.video-card-title {
  margin: 6px 0 0;
  font-size: 16px;
  line-height: 1.2;
}

.feature-video {
  display: block;
  width: min(var(--video-width, 100%), 100%);
  max-width: 100%;
  height: auto;
  background: transparent;
}

.detail-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.item-body {
  display: grid;
  align-content: start;
  gap: 18px;
  min-height: 0;
  overflow-y: auto;
  padding: 18px;
}

.detail-block {
  display: grid;
  gap: 10px;
}

.detail-block h4 {
  margin: 0;
  font-size: 16px;
}

.detail-heading-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 12px;
}

.heading-hint {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border: 1px solid rgba(0, 194, 168, 0.38);
  border-radius: 6px;
  background: rgba(0, 194, 168, 0.08);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
}

.detail-block ul,
.detail-block ol {
  padding-left: 20px;
}

.asset-view-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.asset-view-card {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  overflow: hidden;
}

.asset-view-card img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  background: #101111;
}

.asset-view-card figcaption {
  padding: 8px 10px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

.detail-code {
  margin: 0;
  padding: 12px;
  overflow: visible;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #101111;
  color: var(--text);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
}

.block-caption {
  margin: -4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.step-card-grid {
  display: grid;
  gap: 10px;
}

.step-card {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
}

.step-card-badge {
  display: inline-grid;
  place-items: center;
  min-height: 30px;
  padding: 0 9px;
  border: 1px solid rgba(184, 255, 57, 0.42);
  border-radius: 6px;
  background: rgba(184, 255, 57, 0.08);
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.step-card p {
  margin: 0;
  color: var(--muted);
}

.option-list {
  display: grid;
  gap: 10px;
}

.option-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
}

.option-item.is-gold {
  border-color: var(--accent);
  background: rgba(0, 194, 168, 0.1);
}

.option-key {
  font-weight: 700;
  color: var(--accent-3);
}

.gold-action-box {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px;
  border: 1px solid rgba(0, 194, 168, 0.52);
  border-radius: 6px;
  background: rgba(0, 194, 168, 0.1);
  color: var(--text);
}

.gold-option-badge {
  display: inline-grid;
  place-items: center;
  min-height: 36px;
  border-radius: 6px;
  background: var(--accent);
  color: #071110;
  font-weight: 800;
}

.input-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.input-card {
  display: grid;
  gap: 6px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
}

.input-card h5,
.sequence-body h5 {
  margin: 0;
  color: var(--text);
  font-size: 15px;
}

.input-card p,
.sequence-output,
.action-detail-inner p {
  margin: 0;
  color: var(--muted);
}

.action-pool-grid {
  display: grid;
  gap: 10px;
}

.action-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  transition: border-color 180ms ease, background 180ms ease;
}

.action-card[open] {
  border-color: var(--accent);
  background: rgba(0, 194, 168, 0.08);
}

.action-card summary {
  position: relative;
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 12px 44px 12px 12px;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  font-weight: 700;
  overflow-wrap: anywhere;
  list-style: none;
}

.action-card summary::-webkit-details-marker {
  display: none;
}

.action-card summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 12px;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-top: -11px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent-2);
  transition: transform 180ms ease, border-color 180ms ease;
}

.action-card[open] summary::after {
  transform: rotate(45deg);
  border-color: var(--accent);
}

.pool-action-name {
  min-width: 0;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  overflow-wrap: anywhere;
}

.pool-action-meta {
  color: var(--accent-2);
  font-size: 12px;
  white-space: nowrap;
}

.action-detail {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 220ms ease;
}

.action-card[open] .action-detail {
  grid-template-rows: 1fr;
}

.action-detail-inner {
  display: grid;
  gap: 10px;
  min-height: 0;
  overflow: hidden;
  padding: 0 12px;
}

.action-card[open] .action-detail-inner {
  padding-bottom: 12px;
  animation: actionDetailIn 180ms ease;
}

@keyframes actionDetailIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.arg-grid {
  display: grid;
  gap: 8px;
}

.arg-chip {
  display: grid;
  gap: 3px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #101111;
}

.arg-chip strong {
  color: var(--accent-3);
  font-size: 12px;
}

.arg-chip span,
.returns-line {
  color: var(--muted);
  font-size: 12px;
}

.sequence-map {
  position: relative;
  display: grid;
  gap: 14px;
  padding: 2px 0;
}

.sequence-node {
  position: relative;
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 12px;
}

.sequence-node::before {
  content: "";
  position: absolute;
  left: 36px;
  top: 34px;
  bottom: -18px;
  width: 1px;
  background: var(--line);
}

.sequence-node:last-child::before {
  display: none;
}

.sequence-index {
  position: relative;
  z-index: 1;
  display: inline-grid;
  place-items: center;
  align-self: start;
  min-height: 34px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: #102520;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 700;
}

.sequence-body {
  display: grid;
  gap: 9px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
}

.param-grid,
.dependency-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.param-chip,
.dependency-chip {
  display: inline-flex;
  max-width: 100%;
  padding: 6px 8px;
  border-radius: 6px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 11px;
  overflow-wrap: anywhere;
}

.param-chip {
  border: 1px solid var(--line);
  background: #101111;
  color: var(--muted);
}

.dependency-chip {
  border: 1px solid rgba(255, 176, 0, 0.46);
  background: rgba(255, 176, 0, 0.09);
  color: #ffd37a;
}

.protocol-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.protocol-flow-card {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  line-height: 1.4;
}

.protocol-flow-arrow {
  color: var(--accent);
  font-size: 15px;
  line-height: 1;
}

.answer-box,
.score-box {
  padding: 12px;
  border-left: 3px solid var(--accent);
  background: rgba(0, 194, 168, 0.1);
  color: var(--text);
}

@media (max-width: 1180px) {
  html,
  body {
    height: auto;
    min-height: 100%;
    overflow: auto;
  }

  .app-shell {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 100vh;
    overflow: visible;
  }

  .sidebar {
    position: static;
    height: auto;
    min-height: auto;
    overflow: visible;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .workspace {
    height: auto;
    overflow: visible;
  }

  .main-grid {
    grid-template-columns: 1fr;
    overflow: visible;
  }

  .multi-view-stage {
    grid-template-columns: 1fr;
  }

  .video-grid {
    justify-content: center;
  }
}

@media (max-width: 760px) {
  .workspace,
  .sidebar {
    padding: 18px;
  }

  .sample-tabs {
    grid-template-columns: 1fr;
  }

  .asset-view-grid {
    grid-template-columns: 1fr;
  }

  .input-card-grid {
    grid-template-columns: 1fr;
  }

  .sequence-node {
    grid-template-columns: 58px minmax(0, 1fr);
  }

  .sequence-node::before {
    left: 28px;
  }

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

  .step-card {
    grid-template-columns: 1fr;
  }

  .viewer {
    min-height: 340px;
  }

  .section-title {
    font-size: 30px;
  }
}