/* ----------------------------------------------------
   RAG Interactive Lab
   Page layout and debugger components. Uses the shared
   design tokens and visual language from ../styles.css.
---------------------------------------------------- */

.lab-container {
  flex: 1;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 2rem;
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.lab-intro {
  position: relative;
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 2rem;
  overflow: hidden;
  padding: 2rem;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  background-color: var(--bg-surface);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
}

.lab-intro::after {
  position: absolute;
  top: 0;
  right: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-blue);
  box-shadow: 0 0 0 4px var(--bg-surface);
  content: "";
}

.lab-intro > * {
  position: relative;
  z-index: 1;
}

.lab-intro h1 {
  margin-top: 0.6rem;
  font-size: clamp(2.2rem, 4vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.lab-intro p {
  max-width: 700px;
  margin-top: 0.8rem;
  color: var(--text-secondary);
}

.lab-flow {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.lab-flow span {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-secondary);
  font-family: var(--font-code);
  font-size: 0.68rem;
  text-transform: uppercase;
}

.lab-flow img {
  display: block;
}

.lab-flow i {
  position: relative;
  width: 28px;
  height: 1px;
  background: var(--border-highlight);
}

.lab-flow i::after {
  position: absolute;
  top: -3px;
  right: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-blue);
  content: "";
}

.lab-sidebar {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: sticky;
  top: calc(var(--nav-height) + 1.5rem);
}

.lab-panel-heading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border-medium);
}

.lab-panel-heading > div {
  min-width: 0;
}

.lab-panel-heading > div > span {
  display: block;
  color: var(--accent-blue);
  font-family: var(--font-code);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-node {
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent-blue);
  box-shadow: 0 0 0 4px rgba(10, 150, 255, 0.12);
}

.lab-heading {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: none;
  letter-spacing: -0.01em;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.control-group select,
.control-group input[type="text"],
.control-group textarea {
  background: var(--bg-input);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font-ui);
}

.control-group input[type="range"] {
  min-height: 44px;
  accent-color: var(--color-query);
  cursor: pointer;
}

.lab-sidebar .query-presets {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.lab-sidebar .q-preset-btn {
  min-height: 44px;
}

.debugger-view {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-width: 0;
}

.debug-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.debug-card h3 {
  position: relative;
  min-height: 38px;
  padding-left: 48px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-query);
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-medium);
}

.debug-card h3::before {
  position: absolute;
  top: -4px;
  left: 0;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  background-color: var(--bg-card);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 27px;
  content: "";
}

.debug-card:nth-child(1) h3::before { background-image: url("../brand-assets/icons/chunks.svg"); }
.debug-card:nth-child(2) h3::before { background-image: url("../brand-assets/icons/search.svg"); }
.debug-card:nth-child(3) h3::before { background-image: url("../brand-assets/icons/context.svg"); }
.debug-card:nth-child(4) h3::before { background-image: url("../brand-assets/icons/answer.svg"); }

.debug-card-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.chunks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.chunk-box {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-left: 2px solid var(--accent-blue);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  font-size: 0.85rem;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.chunk-header {
  font-weight: 700;
  font-size: 0.78rem;
  color: #8dccff;
}

.sim-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sim-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
}

.sim-item.is-top-k {
  border-left-color: var(--accent-blue);
  background: rgba(10, 150, 255, 0.06);
}

.sim-label {
  flex: 0 0 auto;
  width: 90px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-family: var(--font-code);
}

.sim-item.is-top-k .sim-label {
  color: #8dccff;
}

.sim-bar-bg {
  flex: 1;
  background: var(--bg-input);
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
}

.sim-bar-fill {
  background: var(--color-search);
  height: 100%;
}

.sim-item.is-top-k .sim-bar-fill {
  background: var(--accent-blue);
}

.sim-score {
  width: 60px;
  text-align: right;
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--color-search);
}

.code-block {
  background: #090d16;
  padding: 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: #a7f3d0;
  white-space: pre-wrap;
  word-break: break-word;
}

.answer-box {
  background: #090d16;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--color-gen);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.95rem;
}

.answer-box.grounded {
  border-left-color: var(--color-context);
}

.answer-box.insufficient {
  border-left-color: var(--color-warn);
}

.answer-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.answer-text {
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 600;
}

.answer-citation {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.answer-status {
  color: #fde68a;
  font-size: 0.9rem;
}

.answer-status.grounded {
  color: #a7f3d0;
}

@media (max-width: 1000px) {
  .lab-container {
    grid-template-columns: 1fr;
  }

  .lab-sidebar {
    position: static;
  }

  .lab-intro {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 700px) {
  .lab-container {
    padding: 1rem;
  }

  .debug-card {
    padding: 1rem;
  }

  .lab-intro {
    padding: 1.5rem;
  }

  .lab-flow {
    width: 100%;
    justify-content: space-between;
  }

  .sim-item {
    flex-wrap: wrap;
    gap: 0.6rem;
  }

  .sim-label {
    width: auto;
  }

  .sim-bar-bg {
    order: 3;
    flex-basis: 100%;
  }
}

@media (max-width: 430px) {
  .lab-flow {
    display: grid;
    grid-template-columns: 1fr;
    align-items: start;
  }

  .lab-flow i {
    width: 1px;
    height: 18px;
    margin-left: 12px;
  }

  .lab-flow i::after {
    top: auto;
    right: -3px;
    bottom: 0;
  }
}

@media (max-width: 1200px) {
  .lab-page {
    --nav-height: 64px;
  }

  .lab-page .navbar,
  .lab-page .nav-container {
    height: var(--nav-height);
  }
}