/* ── Reset & Base ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }

/* ── Theme variables ──────────────────────────────────────────── */
:root {
  /* Light theme (default) */
  --bg-body: #ffffff;
  --bg-nav: #f6f8fa;
  --bg-card: #ffffff;
  --bg-field: #f6f8fa;
  --bg-field-label: #eef1f5;
  --bg-btn: #f0f2f5;
  --bg-pill: #eef1f5;
  --bg-input: #ffffff;
  --bg-msg-user: #dbeafe;
  --bg-msg-assistant: #dcfce7;
  --bg-msg-tool: #fef3c7;
  --bg-msg-system: #f3f4f6;
  --bg-code: #f6f8fa;
  --bg-drag: rgba(37, 99, 235, 0.08);
  --border: #d0d7de;
  --border-light: #e5e7eb;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --text-heading: #111827;
  --text-question: #1f2937;
  --accent: #2563eb;
  --accent-light: #2563eb22;
  --green: #16a34a;
  --green-light: #16a34a22;
  --orange: #d97706;
  --orange-light: #d9770622;
  --scroll-thumb: #d0d7de;
  --scroll-hover: #9ca3af;
  --border-user: #2563eb;
  --border-assistant: #16a34a;
  --border-tool: #d97706;
  --border-system: #9ca3af;
}

[data-theme="dark"] {
  --bg-body: #0d1117;
  --bg-nav: #161b22;
  --bg-card: #161b22;
  --bg-field: #0d1117;
  --bg-field-label: #21262d;
  --bg-btn: #21262d;
  --bg-pill: #21262d;
  --bg-input: #0d1117;
  --bg-msg-user: #1f6feb22;
  --bg-msg-assistant: #23882533;
  --bg-msg-tool: #f5a62322;
  --bg-msg-system: #21262d;
  --bg-code: #0d1117;
  --bg-drag: rgba(31, 111, 235, 0.15);
  --border: #30363d;
  --border-light: #21262d;
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --text-heading: #f0f6fc;
  --text-question: #f0f6fc;
  --accent: #58a6ff;
  --accent-light: #1f6feb33;
  --green: #3fb950;
  --green-light: #23882533;
  --orange: #f5a623;
  --orange-light: #f5a62322;
  --scroll-thumb: #30363d;
  --scroll-hover: #484f58;
  --border-user: #1f6feb;
  --border-assistant: #3fb950;
  --border-tool: #f5a623;
  --border-system: #8b949e;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg-body);
  color: var(--text-primary);
  min-height: 100vh;
  transition: background 0.2s, color 0.2s;
}

/* ── Navbar ────────────────────────────────────────────────────── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.6rem 1.5rem;
  background: var(--bg-nav);
  border-bottom: 1px solid var(--border);
}
.nav-brand {
  font-size: 1.2rem; font-weight: 700; color: var(--text-heading);
  display: flex; align-items: center; gap: 0.4rem;
}
.nav-logo { color: #f5a623; font-size: 1.4rem; }
.nav-links { display: flex; gap: 0.2rem; align-items: center; }
.nav-link {
  padding: 0.45rem 1rem; border-radius: 6px;
  color: var(--text-secondary); text-decoration: none; font-weight: 500; font-size: 0.9rem;
  transition: background 0.15s, color 0.15s;
}
.nav-link:hover { background: var(--bg-btn); color: var(--text-primary); }
.nav-link.active { background: var(--accent-light); color: var(--accent); }

/* Theme toggle button */
.theme-toggle {
  background: none; border: 1px solid var(--border); border-radius: 6px;
  padding: 0.35rem 0.6rem; cursor: pointer;
  font-size: 1rem; line-height: 1;
  color: var(--text-secondary);
  transition: background 0.15s, border-color 0.15s;
  margin-left: 0.5rem;
}
.theme-toggle:hover { background: var(--bg-btn); border-color: var(--text-secondary); }

/* ── Pages ─────────────────────────────────────────────────────── */
.page { display: none; margin: 0 auto; padding: 1.5rem 2rem; }
.page.active { display: block; }

.page-header { text-align: center; margin-bottom: 1.5rem; }
.page-header h1 { font-size: 1.6rem; color: var(--text-heading); margin-bottom: 0.3rem; }
.subtitle { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 1rem; }

/* ── Stats bar ─────────────────────────────────────────────────── */
.stats-bar {
  display: flex; justify-content: center; gap: 2rem;
  margin: 1rem 0;
}
.stat { text-align: center; }
.stat-val { display: block; font-size: 1.3rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 0.75rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; }

/* ── Bench scores table ───────────────────────────────────────── */
.bench-scores {
  margin: 1rem auto; border-collapse: collapse;
  font-size: 0.9rem;
}
.bench-scores th, .bench-scores td {
  padding: 0.4rem 1.2rem;
  border: 1px solid var(--border);
}
.bench-scores th { background: var(--bg-nav); color: var(--text-heading); font-weight: 600; }
.bench-scores td { color: var(--text-primary); }

/* ── Controls ──────────────────────────────────────────────────── */
.viewer-controls {
  display: flex; align-items: center; justify-content: center;
  gap: 0.6rem; margin-bottom: 1rem; flex-wrap: wrap;
}
.btn {
  padding: 0.45rem 1rem; border: 1px solid var(--border); border-radius: 6px;
  background: var(--bg-btn); color: var(--text-primary); cursor: pointer;
  font-size: 0.85rem; font-weight: 500;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover:not(:disabled) { background: var(--border); border-color: var(--text-secondary); }
.btn:disabled { opacity: 0.4; cursor: default; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent); opacity: 0.85; }
.btn-sm { padding: 0.35rem 0.7rem; }
.counter { font-size: 0.9rem; color: var(--text-secondary); min-width: 80px; text-align: center; }
.jump-input {
  width: 80px; padding: 0.35rem 0.5rem; border: 1px solid var(--border);
  border-radius: 6px; background: var(--bg-input); color: var(--text-primary);
  font-size: 0.85rem; text-align: center;
}

/* ── Card ──────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px;
  padding: 1.5rem 2rem; min-height: 300px;
}
.card-placeholder {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; min-height: 250px; gap: 0.8rem; color: var(--text-secondary);
}
.file-label { cursor: pointer; }
.hint { font-size: 0.8rem; color: var(--text-muted); }

/* Loading spinner */
.loading-spinner {
  color: var(--accent); font-size: 1rem;
}
.loading-spinner::before {
  content: ""; display: inline-block;
  width: 14px; height: 14px; margin-right: 0.5rem;
  border: 2px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Dataset fields ───────────────────────────────────────────── */
.field-group { margin-bottom: 1.2rem; }
.field-label {
  display: inline-block; font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-secondary); margin-bottom: 0.3rem;
  background: var(--bg-field-label); padding: 0.15rem 0.5rem; border-radius: 4px;
}
.field-value {
  margin-top: 0.3rem; padding: 0.8rem 1rem;
  background: var(--bg-field); border: 1px solid var(--border-light); border-radius: 6px;
  font-size: 0.9rem; line-height: 1.6;
  white-space: pre-wrap; word-break: break-word;
  overflow-x: auto;
  max-height: 500px; overflow-y: auto;
}
.field-value.messages-field {
  max-height: none; padding: 1rem 1.5rem;
}
.field-value.question-text { font-size: 1rem; color: var(--text-question); }
.field-value.answer-text {
  font-size: 1.1rem; font-weight: 700; color: var(--green);
  background: var(--bg-field);
}

/* Meta pills row */
.meta-row {
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem;
}
.meta-pill {
  display: inline-flex; align-items: center; gap: 0.3rem;
  padding: 0.25rem 0.7rem; border-radius: 20px;
  background: var(--bg-pill); border: 1px solid var(--border);
  font-size: 0.8rem; color: var(--text-primary);
}
.meta-pill .pill-key { color: var(--text-secondary); font-weight: 500; }
.meta-pill .pill-val { color: var(--accent); font-weight: 600; }

/* ── Messages / conversation view ─────────────────────────────── */
.messages-container {
  display: flex; flex-direction: column; gap: 0.6rem;
}
.msg {
  padding: 0.7rem 1rem; border-radius: 8px;
  font-size: 0.85rem; line-height: 1.55;
  white-space: pre-wrap; word-break: break-word;
  overflow-x: auto;
  max-height: 500px; overflow-y: auto;
}
.msg-user {
  background: var(--bg-msg-user); border-left: 3px solid var(--border-user);
}
.msg-assistant {
  background: var(--bg-msg-assistant); border-left: 3px solid var(--border-assistant);
}
.msg-tool {
  background: var(--bg-msg-tool); border-left: 3px solid var(--border-tool);
  font-family: "Fira Code", "Cascadia Code", "Consolas", monospace;
  font-size: 0.8rem;
}
.msg-system {
  background: var(--bg-msg-system); border-left: 3px solid var(--border-system);
  color: var(--text-secondary);
}
.msg-role {
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; margin-bottom: 0.3rem;
}
.msg-role-user { color: var(--border-user); }
.msg-role-assistant { color: var(--green); }
.msg-role-tool { color: var(--orange); }
.msg-role-system { color: var(--text-secondary); }

/* Collapsible reasoning */
.reasoning-toggle {
  cursor: pointer; color: var(--text-secondary); font-size: 0.75rem;
  text-decoration: underline; margin-bottom: 0.3rem; display: inline-block;
}
.reasoning-content { display: none; color: var(--text-secondary); font-style: italic; }
.reasoning-content.open { display: block; }

/* Tool call code block */
.tool-code {
  background: var(--bg-code); padding: 0.6rem; border-radius: 4px;
  font-family: "Fira Code", "Cascadia Code", "Consolas", monospace;
  font-size: 0.8rem; overflow-x: auto;
}

/* ── Bench-specific fields ────────────────────────────────────── */
.bench-field-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
  margin-bottom: 1rem;
}
@media (max-width: 700px) {
  .bench-field-row { grid-template-columns: 1fr; }
}

/* ── Overview page ────────────────────────────────────────────── */
.overview-content {
  max-width: 1000px; margin: 0 auto;
}
.overview-section {
  margin-bottom: 2.5rem;
}
.overview-section h2 {
  font-size: 1.25rem; font-weight: 700; color: var(--text-heading);
  margin-bottom: 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
.overview-text {
  color: var(--text-primary); font-size: 0.92rem; line-height: 1.7;
  margin-bottom: 1rem;
}
.overview-note {
  color: var(--text-secondary); font-size: 0.85rem; line-height: 1.6;
  margin-top: 0.6rem;
}

/* Overview key-value table */
.overview-table {
  width: 100%; border-collapse: collapse; font-size: 0.9rem;
  margin-bottom: 1rem;
}
.overview-table th, .overview-table td {
  padding: 0.55rem 1rem; border: 1px solid var(--border);
  text-align: left;
}
.overview-table th {
  background: var(--bg-nav); color: var(--text-heading);
  font-weight: 600; font-size: 0.85rem;
}
.overview-table td { color: var(--text-primary); }
.overview-table .ot-key {
  font-weight: 600; color: var(--text-heading);
  white-space: nowrap; width: 140px;
  background: var(--bg-field);
}
.source-table td:nth-child(2),
.source-table td:nth-child(3),
.source-table td:nth-child(4),
.source-table th:nth-child(2),
.source-table th:nth-child(3),
.source-table th:nth-child(4) {
  text-align: right;
}
.total-row td {
  border-top: 2px solid var(--accent); background: var(--bg-field);
}

/* Pipeline steps */
.pipeline-steps {
  display: flex; flex-direction: column; gap: 0.5rem;
  margin: 1rem 0;
}
.pipe-step {
  display: flex; align-items: baseline; gap: 0.6rem;
  padding: 0.5rem 0.8rem; border-radius: 6px;
  background: var(--bg-field); border: 1px solid var(--border-light);
  font-size: 0.88rem; color: var(--text-primary); line-height: 1.5;
}
.pipe-num {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent); color: #fff;
  font-size: 0.72rem; font-weight: 700; flex-shrink: 0;
}
.pipe-label {
  font-weight: 600; color: var(--text-heading);
  white-space: nowrap; margin-right: 0.3rem;
}

/* Transform cards */
.transform-grid, .novel-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
  margin: 1rem 0;
}
.transform-card, .novel-card {
  padding: 1rem 1.2rem; border-radius: 8px;
  background: var(--bg-field); border: 1px solid var(--border-light);
}
.transform-card h3, .novel-card h3 {
  font-size: 0.92rem; font-weight: 700; color: var(--accent);
  margin-bottom: 0.4rem;
}
.transform-card p, .novel-card p {
  font-size: 0.85rem; line-height: 1.55; color: var(--text-primary);
}

/* Image row */
.image-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem;
  margin: 1rem 0;
}
.image-card {
  border: 1px solid var(--border); border-radius: 8px; overflow: hidden;
  background: var(--bg-card);
}
.image-card img {
  width: 100%; display: block;
}
.image-caption {
  padding: 0.8rem 1rem;
  font-size: 0.83rem; line-height: 1.55;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-light);
}

/* Findings list */
.findings-list {
  display: flex; flex-direction: column; gap: 0.5rem;
  margin: 0.5rem 0;
}
.finding-item {
  padding: 0.6rem 1rem; padding-left: 1.2rem;
  border-left: 3px solid var(--accent);
  background: var(--bg-field); border-radius: 0 6px 6px 0;
  font-size: 0.88rem; line-height: 1.55; color: var(--text-primary);
}

@media (max-width: 700px) {
  .transform-grid, .novel-grid, .image-row { grid-template-columns: 1fr; }
}

/* ── Footer ───────────────────────────────────────────────────── */
.footer {
  text-align: center; padding: 2rem 1rem;
  color: var(--text-muted); font-size: 0.8rem;
  border-top: 1px solid var(--border-light);
  margin-top: 3rem;
}
.footer-visitors { margin-top: 0.5rem; }
.visitor-icon { margin-right: 0.25rem; }
.visitor-count { font-weight: 600; color: var(--text-secondary); }

/* ── Drag-over highlight ──────────────────────────────────────── */
body.drag-over::after {
  content: "Drop JSONL/CSV file here";
  position: fixed; inset: 0; z-index: 999;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-drag);
  border: 3px dashed var(--accent);
  font-size: 1.4rem; color: var(--accent); font-weight: 600;
  pointer-events: none;
}

/* ── Table of Contents ────────────────────────────────────────── */
.toc {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem;
  padding: 0.7rem 1rem; margin-bottom: 2rem;
  background: var(--bg-field); border: 1px solid var(--border-light); border-radius: 8px;
}
.toc-label {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--text-secondary); margin-right: 0.3rem;
}
.toc-link {
  font-size: 0.82rem; color: var(--accent); text-decoration: none;
  padding: 0.2rem 0.55rem; border-radius: 4px;
  transition: background 0.15s;
}
.toc-link:hover { background: var(--accent-light); }
.toc-link::before { content: "·"; margin-right: 0.1rem; color: var(--text-muted); }
.toc-link:first-of-type::before { content: ""; margin-right: 0; }

/* ── Filter row ──────────────────────────────────────────────── */
.filter-row {
  display: flex; align-items: center; justify-content: center;
  gap: 0.6rem; margin-bottom: 0.5rem; flex-wrap: wrap;
}
.filter-label {
  font-size: 0.8rem; font-weight: 600; color: var(--text-secondary);
}
.filter-select {
  padding: 0.3rem 0.6rem; border: 1px solid var(--border); border-radius: 6px;
  background: var(--bg-input); color: var(--text-primary);
  font-size: 0.82rem; cursor: pointer;
  transition: border-color 0.15s;
}
.filter-select:hover { border-color: var(--accent); }
.filter-select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }
.filter-count {
  font-size: 0.78rem; color: var(--text-muted); font-style: italic;
}

/* ── Mini stats bar ──────────────────────────────────────────── */
.mini-stats {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 0.4rem;
  margin-bottom: 0.6rem; min-height: 0;
}
.mini-stat {
  display: inline-flex; align-items: center; gap: 0.25rem;
  padding: 0.15rem 0.55rem; border-radius: 12px;
  font-size: 0.72rem; background: var(--bg-pill); border: 1px solid var(--border-light);
  color: var(--text-secondary);
}
.mini-stat-val { font-weight: 700; color: var(--accent); }

/* ── Collapsible tool output ─────────────────────────────────── */
.tool-output-wrapper { position: relative; }
.tool-output-collapsed {
  max-height: 120px; overflow: hidden;
  mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
}
.tool-output-toggle {
  display: block; text-align: center; cursor: pointer;
  font-size: 0.75rem; color: var(--accent); padding: 0.3rem 0;
  border: none; background: none; width: 100%;
}
.tool-output-toggle:hover { text-decoration: underline; }

/* ── Prism.js overrides ──────────────────────────────────────── */
.tool-code {
  background: var(--bg-code); padding: 0.6rem; border-radius: 4px;
  font-family: "Fira Code", "Cascadia Code", "Consolas", monospace;
  font-size: 0.8rem; overflow-x: auto; margin: 0;
}
.tool-code code[class*="language-"],
.tool-code[class*="language-"] {
  background: none !important;
  text-shadow: none !important;
  font-size: 0.8rem;
}
/* Light theme: high-contrast VS Code-inspired colors */
:root .tool-code code[class*="language-"],
:root .tool-code { color: #1f2937 !important; }
:root .tool-code .token.comment,
:root .tool-code .token.prolog,
:root .tool-code .token.doctype { color: #6a737d; font-style: italic; }
:root .tool-code .token.keyword,
:root .tool-code .token.tag { color: #d73a49; }
:root .tool-code .token.string,
:root .tool-code .token.attr-value { color: #032f62; }
:root .tool-code .token.number,
:root .tool-code .token.boolean { color: #005cc5; }
:root .tool-code .token.function { color: #6f42c1; }
:root .tool-code .token.builtin,
:root .tool-code .token.class-name { color: #e36209; }
:root .tool-code .token.operator,
:root .tool-code .token.punctuation { color: #24292e; }
:root .tool-code .token.decorator,
:root .tool-code .token.annotation { color: #6f42c1; }
:root .tool-code .token.triple-quoted-string { color: #032f62; }
/* Dark theme: bright Monokai-inspired colors */
[data-theme="dark"] .tool-code code[class*="language-"],
[data-theme="dark"] .tool-code { color: #e6edf3 !important; }
[data-theme="dark"] .tool-code .token.comment,
[data-theme="dark"] .tool-code .token.prolog,
[data-theme="dark"] .tool-code .token.doctype { color: #8b949e; font-style: italic; }
[data-theme="dark"] .tool-code .token.keyword,
[data-theme="dark"] .tool-code .token.tag { color: #ff7b72; }
[data-theme="dark"] .tool-code .token.string,
[data-theme="dark"] .tool-code .token.attr-value { color: #a5d6ff; }
[data-theme="dark"] .tool-code .token.number,
[data-theme="dark"] .tool-code .token.boolean { color: #79c0ff; }
[data-theme="dark"] .tool-code .token.function { color: #d2a8ff; }
[data-theme="dark"] .tool-code .token.builtin,
[data-theme="dark"] .tool-code .token.class-name { color: #ffa657; }
[data-theme="dark"] .tool-code .token.operator,
[data-theme="dark"] .tool-code .token.punctuation { color: #c9d1d9; }
[data-theme="dark"] .tool-code .token.decorator,
[data-theme="dark"] .tool-code .token.annotation { color: #d2a8ff; }
[data-theme="dark"] .tool-code .token.triple-quoted-string { color: #a5d6ff; }

/* ── Scrollbar ────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scroll-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--scroll-hover); }