styles.css

:root {
  --bg: #f4efe5;
  --bg-accent: #e5f0e8;
  --panel: rgba(255, 252, 245, 0.92);
  --panel-strong: rgba(255, 248, 234, 0.98);
  --text: #17211d;
  --muted: #51615b;
  --line: rgba(23, 33, 29, 0.12);
  --brand: #0d8f71;
  --brand-soft: rgba(13, 143, 113, 0.14);
  --accent: #ef8354;
  --shadow: 0 18px 60px rgba(20, 30, 28, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(239, 131, 84, 0.2), transparent 28%),
    radial-gradient(circle at top right, rgba(13, 143, 113, 0.18), transparent 24%),
    linear-gradient(135deg, var(--bg) 0%, var(--bg-accent) 100%);
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(300px, 360px) 1fr;
  gap: 20px;
  padding: 24px;
  height: 100vh;
  min-height: 0;
}

.control-rail,
.content-pane {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 0;
}

.control-rail {
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 4px;
}

.content-pane {
  overflow: hidden;
}

.hero-card,
.panel-card,
.canvas-card {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(14px);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 14px 18px;
  background: linear-gradient(160deg, rgba(255, 252, 245, 0.98), rgba(245, 255, 250, 0.94));
}

.panel-card {
  padding: 20px;
}

.canvas-card {
  padding: 22px;
  min-height: 0;
}

.eyebrow {
  margin: 0 0 4px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
}

h1,
h2 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
}

h1 {
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  line-height: 1.05;
}

h2 {
  font-size: 1.3rem;
}

.muted {
  color: var(--muted);
}

.hero-card .muted {
  margin: 4px 0 0;
  font-size: 0.88rem;
  line-height: 1.25;
}

.hero-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-info-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.hero-info-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid rgba(23, 33, 29, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--brand);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
  flex: 0 0 auto;
  animation: infoPulse 2.4s ease-in-out infinite;
}

.hero-info-button:hover {
  background: rgba(13, 143, 113, 0.12);
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(20, 30, 28, 0.1);
}

.hero-info-button:focus-visible {
  outline: 2px solid rgba(13, 143, 113, 0.35);
  outline-offset: 2px;
}

.analysis-hint {
  position: absolute;
  top: calc(100% + 10px);
  right: -6px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px 8px 12px;
  border-radius: 14px;
  border: 1px solid rgba(23, 33, 29, 0.1);
  background: rgba(255, 252, 245, 0.98);
  color: var(--text);
  box-shadow: 0 18px 36px rgba(20, 30, 28, 0.12);
  white-space: nowrap;
  z-index: 4;
  animation: hintFloat 2.8s ease-in-out infinite;
}

.analysis-hint::before {
  content: "";
  position: absolute;
  top: -6px;
  right: 14px;
  width: 12px;
  height: 12px;
  background: rgba(255, 252, 245, 0.98);
  border-top: 1px solid rgba(23, 33, 29, 0.1);
  border-left: 1px solid rgba(23, 33, 29, 0.1);
  transform: rotate(45deg);
}

.analysis-hint-text {
  position: relative;
  z-index: 1;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
}

.analysis-hint-close {
  position: relative;
  z-index: 1;
  width: 20px;
  height: 20px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(23, 33, 29, 0.08);
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
}

@keyframes infoPulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(13, 143, 113, 0.0);
    transform: translateY(0);
  }
  45% {
    box-shadow: 0 0 0 8px rgba(13, 143, 113, 0.0), 0 0 0 0 rgba(13, 143, 113, 0.16);
    transform: translateY(-1px);
  }
  60% {
    box-shadow: 0 0 0 10px rgba(13, 143, 113, 0.0), 0 0 0 0 rgba(13, 143, 113, 0.0);
  }
}

@keyframes hintFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2px);
  }
}

.hero-reference {
  margin-top: 8px;
  border-top: 1px solid rgba(23, 33, 29, 0.08);
  padding-top: 8px;
}

.hero-reference summary {
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--muted);
  list-style: none;
}

.hero-reference summary::-webkit-details-marker {
  display: none;
}

.hero-reference summary::after {
  content: "Show";
  margin-left: 8px;
  font-size: 0.78rem;
  color: var(--brand);
}

.hero-reference[open] summary::after {
  content: "Hide";
}

.hero-reference-stack {
  margin-top: 10px;
}

.panel-header,
.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 0.84rem;
  font-weight: 700;
}

.loading-panel {
  display: grid;
  gap: 8px;
  margin: 12px 0 16px;
}

.loading-panel[hidden] {
  display: none !important;
}

.loading-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.92rem;
}

.loading-meta strong {
  font-size: 0.94rem;
}

.loading-track {
  overflow: hidden;
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(23, 33, 29, 0.08);
}

.loading-bar {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand) 0%, var(--accent) 100%);
  transition: width 180ms ease;
}

.slider-label,
.meta-label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

input[type="range"] {
  width: 100%;
  margin: 8px 0 12px;
  accent-color: var(--brand);
}

.run-select {
  width: 100%;
  margin: 8px 0 12px;
  padding: 12px 14px;
  border: 1px solid rgba(23, 33, 29, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  font: inherit;
}

.hidden-control {
  display: none !important;
}

[hidden] {
  display: none !important;
}

.results-table-wrap {
  overflow-x: auto;
  overflow-y: auto;
  margin: 8px 0 12px;
  border: 1px solid rgba(23, 33, 29, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.7);
  max-height: 26vh;
}

.results-table {
  width: 100%;
  min-width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.results-table th,
.results-table td {
  padding: 10px 10px;
  text-align: left;
  border-bottom: 1px solid rgba(23, 33, 29, 0.08);
  white-space: nowrap;
}

.results-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: rgba(255, 248, 234, 0.98);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.results-table tbody tr {
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}

.results-table tbody tr:hover {
  background: rgba(13, 143, 113, 0.08);
}

.results-table tbody tr.is-selected {
  background: rgba(13, 143, 113, 0.14);
}

.results-table td.metric-cell {
  font-variant-numeric: tabular-nums;
}

.results-table td.metric-cell-strong {
  font-weight: 700;
  color: var(--brand);
}

.results-table td.run-cell {
  max-width: 88px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.step-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}

.step-meta strong {
  font-size: 1rem;
}

.timeline-controls {
  display: grid;
  gap: 4px;
  margin-top: 2px;
  flex: 0 0 auto;
}

.timeline-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.timeline-meta-item {
  display: inline-flex;
  align-items: flex-start;
  gap: 8px;
  padding: 7px 9px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(23, 33, 29, 0.08);
}

.timeline-meta-item strong {
  font-size: 0.95rem;
}

.timeline-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
  min-width: 0;
}

.timeline-slider-inline {
  display: flex;
  align-items: center;
  flex: 0 0 200px;
  min-width: 160px;
  max-width: 200px;
}

.timeline-slider-inline input[type="range"] {
  width: 100%;
  margin: 0;
}

.timeline-title-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(13, 143, 113, 0.1);
  color: var(--brand);
  font-size: 0.85rem;
  font-weight: 700;
}

.timeline-title-metrics {
  font-size: 0.88rem;
  line-height: 1.25;
  color: var(--muted);
}

.timeline-metrics-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 1 auto;
  min-width: 0;
  flex-wrap: nowrap;
}

.timeline-title-metrics-status {
  flex: 0 1 auto;
  white-space: nowrap;
}

.timeline-metric-pill {
  background: rgba(23, 33, 29, 0.06);
  color: var(--text);
  font-weight: 600;
  white-space: nowrap;
}

.timeline-metric-pill-test {
  background: rgba(239, 131, 84, 0.12);
  color: #9a4d28;
}

@media (max-width: 1200px) {
  .timeline-title-row {
    flex-wrap: wrap;
  }

  .timeline-slider-inline {
    flex: 1 1 220px;
    min-width: 180px;
    max-width: 320px;
  }
}

.section-heading-compact {
  margin-top: 2px;
}

.meta-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 0;
}

.experiment-card {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
}

.experiment-scroll {
  overflow: auto;
  min-height: 0;
  padding-right: 4px;
}

.meta-list div {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(23, 33, 29, 0.08);
}

.meta-list dt {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.meta-list dd {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.4;
}

.reference-stack {
  display: grid;
  gap: 14px;
}

.reference-figure {
  margin: 0;
  display: grid;
  gap: 8px;
}

.reference-figure img {
  width: 100%;
  display: block;
  border-radius: 18px;
  border: 1px solid rgba(23, 33, 29, 0.08);
  background: white;
  cursor: zoom-in;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.reference-figure img:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(20, 30, 28, 0.14);
}

.reference-figure figcaption {
  font-size: 0.9rem;
  color: var(--muted);
}

.image-lightbox {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 9999;
}

.image-lightbox[hidden] {
  display: none !important;
}

.image-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(23, 33, 29, 0.56);
  backdrop-filter: blur(4px);
}

.image-lightbox-dialog {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  width: min(92vw, 1120px);
  max-height: calc(100vh - 48px);
  padding: 18px 18px 14px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 252, 245, 0.98);
  box-shadow: 0 32px 80px rgba(20, 30, 28, 0.35);
}

.image-lightbox-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 999px;
  background: rgba(23, 33, 29, 0.08);
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.image-lightbox-image {
  width: 100%;
  height: auto;
  max-height: calc(100vh - 132px);
  object-fit: contain;
  border-radius: 18px;
  background: white;
}

.image-lightbox-caption {
  margin: 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.analysis-modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 10000;
}

.analysis-modal[hidden] {
  display: none !important;
}

.analysis-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(23, 33, 29, 0.56);
  backdrop-filter: blur(6px);
}

.analysis-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(900px, calc(100vw - 48px));
  max-height: calc(100vh - 48px);
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 252, 245, 0.98);
  box-shadow: 0 32px 84px rgba(20, 30, 28, 0.34);
  overflow: hidden;
}

.analysis-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 999px;
  background: rgba(23, 33, 29, 0.08);
  color: var(--text);
  font-size: 1.55rem;
  line-height: 1;
  cursor: pointer;
}

.analysis-modal-content {
  overflow: auto;
  max-height: calc(100vh - 48px);
  padding: 28px 30px 28px;
}

.analysis-markdown {
  color: var(--text);
  line-height: 1.75;
}

.analysis-markdown h1,
.analysis-markdown h2,
.analysis-markdown h3 {
  font-family: "Space Grotesk", sans-serif;
  line-height: 1.15;
}

.analysis-markdown h1 {
  margin: 0 0 12px;
  font-size: 1.62rem;
}

.analysis-markdown h2 {
  margin: 28px 0 10px;
  font-size: 1.1rem;
  padding-top: 18px;
  border-top: 1px solid rgba(23, 33, 29, 0.08);
}

.analysis-markdown h2:first-child,
.analysis-markdown h1 + h2 {
  border-top: 0;
  padding-top: 0;
}

.analysis-markdown p {
  margin: 0 0 14px;
}

.analysis-markdown ul,
.analysis-markdown ol {
  margin: 0 0 14px 1.2rem;
  padding: 0;
}

.analysis-markdown li + li {
  margin-top: 6px;
}

.analysis-markdown code {
  padding: 0.12rem 0.36rem;
  border-radius: 8px;
  background: rgba(23, 33, 29, 0.06);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.92em;
}

.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  flex: 1 1 auto;
  min-height: 0;
  align-items: stretch;
}

.heatmap-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid rgba(23, 33, 29, 0.08);
  background: var(--panel-strong);
  min-height: 0;
}

.heatmap-header {
  padding: 14px 16px;
  font-weight: 700;
  border-bottom: 1px solid rgba(23, 33, 29, 0.08);
}

.plot-surface {
  width: 100%;
  min-height: 360px;
}

.plot-surface-hero {
  min-height: clamp(230px, 33vh, 380px);
  flex: 1 1 auto;
}

.plot-surface-tall {
  min-height: clamp(104px, 13vh, 154px);
}

.plot-surface-wide {
  min-height: clamp(168px, 22vh, 250px);
  height: 100%;
}

.chart-wrap {
  position: relative;
  min-height: 0;
  padding: 2px 0 0;
  flex: 1 1 auto;
  display: flex;
}

#loss-chart {
  width: 100%;
  height: 100%;
  min-height: 0;
  border-radius: 18px;
  border: 1px solid rgba(23, 33, 29, 0.08);
  background:
    linear-gradient(180deg, rgba(13, 143, 113, 0.05), rgba(13, 143, 113, 0)),
    white;
}

.chart-empty {
  position: absolute;
  inset: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  border: 1px dashed rgba(23, 33, 29, 0.18);
  border-radius: 18px;
  background: rgba(255, 252, 245, 0.85);
  color: var(--muted);
  font-weight: 500;
  z-index: 2;
}

.chart-empty[hidden] {
  display: none !important;
}

.error-column-card {
  display: flex;
  flex-direction: column;
}

.error-column {
  display: grid;
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 14px;
  flex: 1 1 auto;
  min-height: 0;
}

.error-panel {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid rgba(23, 33, 29, 0.08);
  background: rgba(255, 255, 255, 0.55);
}

.error-panel-title {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 10px;
  font-size: 0.82rem;
  font-weight: 700;
  text-align: center;
  color: var(--muted);
  border-right: 1px solid rgba(23, 33, 29, 0.08);
  background: rgba(255, 252, 245, 0.72);
}

.content-pane > .canvas-card:first-child {
  flex: 1 1 56%;
  display: flex;
  flex-direction: column;
}

.content-pane > .canvas-card:last-child {
  flex: 1 1 44%;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

@media (max-width: 1500px) {
  .heatmap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .error-column-card {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1100px) {
  body {
    height: auto;
    overflow: auto;
  }

  .page-shell {
    grid-template-columns: 1fr;
    height: auto;
  }

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

  .control-rail,
  .content-pane {
    overflow: visible;
  }

  .analysis-modal {
    padding: 14px;
  }

  .analysis-modal-dialog {
    width: min(100%, calc(100vw - 28px));
    max-height: calc(100vh - 28px);
  }

  .analysis-modal-content {
    padding: 22px 18px 22px;
    max-height: calc(100vh - 28px);
  }

  .analysis-hint {
    right: auto;
    left: -12px;
  }

  .analysis-hint::before {
    right: auto;
    left: 18px;
  }
}