/* ================================================================
   ClutterBench Project Page — Stylesheet
   ================================================================ */

/* ── Variables ── */
:root {
  --bg:        #ffffff;
  --surface:   #f8f9fa;
  --border:    #e0e0e0;
  --accent:    #e16208;
  --accent-dk: #ea580c;
  --text:      #212121;
  --muted:     #5f6368;
  --success:   #34a853;
  --danger:    #ea4335;
  --tag-bg:    #fff7ed;
  --tag-color: #c2410c;
}

/* ── Utilities ── */
.sub { font-size: .74rem; color: var(--muted); }

.subsection-title {
  font-family: 'Palatino Linotype', Palatino, 'Book Antiqua', serif;
  font-size: 1rem; font-weight: 550;
  margin: 2rem 0 .6rem;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { scroll-behavior: smooth; }
body  {
  font-family: 'Palatino Linotype', Palatino, 'Book Antiqua', serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

/* ── Layout ── */
.container { max-width: 1000px; margin: 0 auto; padding: 2rem 2rem; }
section    { padding: 1.5rem 0; }
hr         { border: none; border-top: 1px solid var(--border); }

/* ── Typography ── */
.section-title {
  font-family: 'Palatino Linotype', Palatino, 'Book Antiqua', serif;
  font-size: 1.55rem; font-weight: 500;
  color: var(--text);
  margin-bottom: 1rem;
  padding-bottom: .65rem;
  border-bottom: 2px solid var(--border);
}

p.lead {
  color: var(--muted);
  font-size: .92rem;
  margin-bottom: 1rem;
}

/* ================================================================
   Navigation
   ================================================================ */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: .7rem 2rem;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: 'Source Code Pro', monospace;
  font-size: .8rem; color: var(--accent); letter-spacing: .1em;
}
.nav-links { display: flex; gap: 1.5rem; list-style: none; }
.nav-links a {
  font-size: .82rem; color: var(--muted);
  text-decoration: none; font-weight: 500;
  transition: color .2s;
}
.nav-links a:hover { color: var(--accent); }

/* ================================================================
   Hero
   ================================================================ */
.hero { text-align: center; }

.conference-tag {
  display: inline-block;
  background: #fce8e6; color: #c5221f;
  padding: .2rem .85rem; border-radius: 20px;
  font-size: .83rem; font-weight: 500; margin-bottom: 1.2rem;
}

.hero-title {
  font-family: 'Palatino Linotype', Palatino, 'Book Antiqua', serif;
  font-size: clamp(1.55rem, 3.2vw, 2.2rem);
  font-weight: 500; line-height: 1.3;
  max-width: 800px; margin: 0 auto 1.4rem;
}

.anon-badge {
  display: inline-block;
  background: var(--tag-bg); color: var(--tag-color);
  padding: .2rem .85rem; border-radius: 20px;
  font-size: .85rem; font-weight: 500;
}

/* ── Buttons ── */
.hero-buttons {
  display: flex; flex-wrap: wrap;
  gap: .55rem; justify-content: center; margin-top: 1.4rem;
}
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .5rem 1.15rem;
  font-size: .84rem; font-weight: 500;
  border-radius: 4px; text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text); background: var(--bg);
  transition: all .15s; cursor: pointer; font-family: inherit;
}
.btn:hover        { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary      { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dk); border-color: var(--accent-dk); }

/* ================================================================
   Video Placeholders
   ================================================================ */
.video-wrap {
  margin-top: 1.75rem;
  border: 1px solid var(--border);
  border-radius: 8px; overflow: hidden;
}
.video-placeholder {
  aspect-ratio: 16/9;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: .5rem;
  background: #f1f3f4; color: var(--muted); font-size: .9rem;
}
.play-btn {
  width: 50px; height: 50px; border-radius: 50%;
  background: rgba(0,0,0,.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.video-caption {
  padding: .55rem 1rem;
  font-size: .78rem; color: var(--muted);
  border-top: 1px solid var(--border); font-style: italic;
}
.video-grid-4  { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 1.5rem; }
.video-grid-3  { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1.5rem; }
.video-card  { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.video-card-label {
  /* padding: .5rem .9rem; */
  font-size: .78rem; color: var(--muted);
  border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: .4rem;
  justify-content: center;
}
.dot       { width: 7px; height: 7px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.dot-sim   { background: #f97316; }
.dot-real  { background: #ea4335; }

/* ================================================================
   Abstract
   ================================================================ */
.abstract-text             { font-size: .95rem; line-height: 1.8; max-width: 840px; }
.abstract-text p + p       { margin-top: .9rem; }
strong.hl                  { color: var(--accent); }

/* ── Stats bar ── */
.stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--border);
  border: 1px solid var(--border);
  border-radius: 8px; overflow: hidden; margin-top: 2rem;
}
.stat-cell  { background: var(--bg); padding: 1.2rem; text-align: center; }
.stat-num   { font-family: 'Palatino Linotype', Palatino, 'Book Antiqua', serif; font-size: 1.9rem; color: var(--accent); font-weight: 500; line-height: 1; }
.stat-label { font-size: .76rem; color: var(--muted); margin-top: .3rem; }

/* ================================================================
   Overview Figure
   ================================================================ */
.overview-img {
  width: 100%; 
  display: block;
}
.fig-caption {
  font-size: .77rem; color: var(--muted);
  margin-top: .55rem; font-style: italic; text-align: center;
}

/* ================================================================
   Benchmark — Suite Cards
   ================================================================ */
.suite-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .75rem; margin-top: 1.5rem; }
.suite-card {
  border: 1px solid var(--border);
  border-radius: 8px; padding: 1.2rem;
  border-top: 3px solid transparent;
}
.suite-card.orderly  { border-top-color: #ff0000; }
.suite-card.random   { border-top-color: #fb9004; }
.suite-card.complex  { border-top-color: #2ac612; }
.suite-card.temporal { border-top-color: #0073ff; }
.suite-icon  { font-size: 1.3rem; margin-bottom: .55rem; }
.suite-name  { font-family: 'Palatino Linotype', Palatino, 'Book Antiqua', serif; font-size: .93rem; font-weight: 500; margin-bottom: .3rem; }
.suite-desc  { font-size: .79rem; color: var(--muted); line-height: 1.6; }
.suite-meta  { margin-top: .65rem; font-size: .73rem; color: var(--muted); font-family: 'Source Code Pro', monospace; }

/* ── Platform split (sim vs real) ── */
.platform-split { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-top: 1.5rem; }
.platform-card  { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.platform-header {
  padding: .6rem 1rem;
  font-family: 'Palatino Linotype', Palatino, 'Book Antiqua', serif;
  font-size: .84rem; font-weight: 500;
  display: flex; align-items: center; gap: .45rem;
  background: #fff7ed; color: #c2410c;
}
/* .platform-header.sim  { background: #fff7ed; color: #c2410c; }
.platform-header.real { background: #fce8e6; color: #c5221f; } */
.platform-detail {
  padding: .8rem 1rem;
  font-size: .81rem; color: var(--muted); line-height: 1.75;
  border-top: 1px solid var(--border);
}
.platform-detail strong { color: var(--text); font-weight: 600; }

/* ================================================================
   Note / Callout Boxes
   ================================================================ */
.note-box {
  background: var(--tag-bg);
  border-left: 3px solid var(--accent);
  padding: .7rem 1rem;
  border-radius: 0 4px 4px 0;
  font-size: .82rem; color: var(--tag-color);
  margin-top: 1rem;
}
/* .note-box.danger  { background: #fce8e6; border-color: var(--danger);  color: #c5221f; }
.note-box.success { background: #e6f4ea; border-color: var(--success); color: #137333; } */

/* ================================================================
   Tabs
   ================================================================ */
.tab-group {
  display: flex; border-bottom: 2px solid var(--border); margin-bottom: 1.1rem;
}
.tab {
  padding: .5rem 1.1rem;
  font-size: .84rem; font-weight: 500; color: var(--muted);
  cursor: pointer; border: none; background: none;
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  transition: all .15s; font-family: inherit;
}
.tab.active        { color: var(--accent); border-bottom-color: var(--accent); }
.tab:hover:not(.active) { color: var(--accent); }

/* ================================================================
   Tables
   ================================================================ */
.table-wrap   { overflow-x: auto; }
table         { width: 100%; border-collapse: collapse; font-size: .84rem; }
thead tr      { border-bottom: 2px solid var(--border); }
thead th      { padding: .55rem .9rem; text-align: left; font-size: .77rem; font-weight: 600; color: var(--muted); white-space: nowrap; }
tbody tr      { border-bottom: 1px solid var(--border); }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover      { background: #f8f9fa; }
tbody td            { padding: .55rem .9rem; color: var(--muted); }
tbody td:first-child {
  color: var(--text); font-weight: 500;
  font-family: 'Source Code Pro', monospace; font-size: .81rem;
}
.best { color: var(--accent); font-weight: 700; }

/* ================================================================
   Real-World Results
   ================================================================ */
.rw-grid        { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; margin-top: 1.5rem; }
.rw-card        { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.rw-card-header { padding: .6rem 1rem; background: #fce8e6; color: #c5221f; font-family: 'Palatino Linotype', Palatino, 'Book Antiqua', serif; font-size: .83rem; font-weight: 500; }

/* ================================================================
   Fine-tuning
   ================================================================ */
.ft-note {
  background: #e6f4ea; border-left: 3px solid var(--success);
  padding: .7rem 1rem; border-radius: 0 4px 4px 0;
  font-size: .82rem; color: #137333; margin-bottom: 1.1rem;
}

/* ================================================================
   Extendable Cards
   ================================================================ */
.extend-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; margin-top: 1.5rem; }
.extend-card { border: 1px solid var(--border); border-radius: 8px; padding: 1.2rem; }
.extend-card h4 {
  font-family: 'Palatino Linotype', Palatino, 'Book Antiqua', serif;
  font-size: .92rem; font-weight: 500; margin-bottom: .45rem;
  display: flex; align-items: center; gap: .35rem;
}
.extend-card p    { font-size: .81rem; color: var(--muted); max-width: 100%; }
.code-snippet {
  margin-top: .7rem; background: #f1f3f4; border-radius: 4px;
  padding: .6rem .85rem;
  font-family: 'Source Code Pro', monospace;
  font-size: .73rem; color: #5f6368; line-height: 1.75;
}

/* ================================================================
   Key Findings
   ================================================================ */
.findings-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; margin-top: 1.5rem; }
.finding-card  { border: 1px solid var(--border); border-radius: 8px; padding: 1.2rem; }
.finding-num   { font-family: 'Palatino Linotype', Palatino, 'Book Antiqua', serif; font-size: 1.9rem; color: #e0e0e0; line-height: 1; margin-bottom: .35rem; }
.finding-title { font-weight: 600; font-size: .87rem; margin-bottom: .3rem; }
.finding-body  { font-size: .81rem; color: var(--muted); line-height: 1.65; }

/* ================================================================
   Citation
   ================================================================ */
.citation-block {
  background: #f8f9fa; border: 1px solid var(--border);
  border-radius: 8px; padding: 1.25rem; margin-top: 1.1rem;
  font-family: 'Source Code Pro', monospace;
  font-size: .77rem; line-height: 1.9; color: var(--muted);
  position: relative; white-space: pre-wrap;
}
.copy-btn {
  position: absolute; top: .75rem; right: .75rem;
  background: var(--accent); color: #fff; border: none;
  padding: .28rem .7rem; border-radius: 4px;
  font-size: .73rem; cursor: pointer; font-family: inherit;
  transition: background .15s;
}
.copy-btn:hover { background: var(--accent-dk); }

/* ================================================================
   Footer
   ================================================================ */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem; text-align: center;
  font-size: .79rem; color: var(--muted);
}
footer a { color: var(--accent); text-decoration: none; }

/* ================================================================
   Responsive
   ================================================================ */
@media (max-width: 768px) {
  .suite-grid, .findings-grid            { grid-template-columns: 1fr 1fr; }
  .platform-split, .rw-grid,
  .extend-grid, .video-grid             { grid-template-columns: 1fr; }
  .stats-row                            { grid-template-columns: 1fr 1fr; }
  .nav-links                            { display: none; }
  section                               { padding: 2.5rem 0; }
}