/* ============================================================
   MonoPCA project page
   ============================================================ */

/* Palette: UNC-Chapel Hill brand colors (identity.unc.edu/brand/color)
   Carolina Blue #4B9CD3 · Navy #13294B · Hyperlink Blue #007FAE · Bolin Creek #2C5080
   Cloud #EDF5FB · Old Well Basin #5B6670 · Clay #E95550 · Piedmont Pine #006D6A */
:root {
  --bg:        #fbfcfe;
  --bg-soft:   #f1f6fb;
  --card:      #ffffff;
  --fig-bg:    #ffffff;
  --text:      #13294b;
  --text-2:    #34465f;
  --text-3:    #5b6670;
  --text-4:    #95a0a8;
  --border:    rgba(19, 41, 75, 0.10);
  --border-2:  rgba(19, 41, 75, 0.18);

  --blue:      #007fae;          /* Hyperlink Blue: text-size accents */
  --carolina:  #4b9cd3;          /* Carolina Blue: large marks */
  --navy:      #13294b;
  --blue-soft: rgba(75, 156, 211, 0.14);
  --violet:    #2c5080;          /* Bolin Creek (gradient partner) */
  --orange:    #e95550;          /* Clay: the bias / error */
  --orange-soft: rgba(233, 85, 80, 0.10);
  --teal:      #006d6a;          /* Piedmont Pine: gains */

  --hero-bg:
    radial-gradient(1000px 460px at 50% -8%, rgba(75, 156, 211, 0.28), transparent 70%),
    linear-gradient(180deg, #edf5fb 0%, #f6fafd 60%, #fbfcfe 100%);
  --hero-text:  #13294b;
  --hero-sub:   #34465f;
  --hero-muted: #5b6670;
  --hero-grid:  rgba(75, 156, 211, 0.38);
  --hero-glow:  rgba(75, 156, 211, 0.22);
  --btn-bg:     #13294b;
  --btn-fg:     #ffffff;
  --btn-hover:  #2c5080;

  --shadow-sm: 0 1px 2px rgba(19, 41, 75, 0.06);
  --shadow:    0 10px 30px -12px rgba(19, 41, 75, 0.20);
  --shadow-lg: 0 30px 60px -24px rgba(19, 41, 75, 0.32);

  --radius:    16px;
  --radius-sm: 10px;
  --ease:      cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1080px;
  --nav-h:     60px;
}

[data-theme="dark"] {
  --bg:        #0a1424;
  --bg-soft:   #11203a;
  --card:      #0f1d34;
  --fig-bg:    #f7f9fc;
  --text:      #eef4fb;
  --text-2:    #c6d3e3;
  --text-3:    #93a4ba;
  --text-4:    #66788f;
  --border:    rgba(183, 215, 237, 0.10);
  --border-2:  rgba(183, 215, 237, 0.20);

  --blue:      #7bb8e3;
  --carolina:  #7bb8e3;
  --navy:      #b7d7ed;
  --blue-soft: rgba(123, 184, 227, 0.14);
  --violet:    #b7d7ed;
  --orange:    #ff7b76;
  --orange-soft: rgba(255, 123, 118, 0.14);
  --teal:      #4fd1c5;

  --hero-bg:
    radial-gradient(1000px 460px at 50% -8%, rgba(75, 156, 211, 0.30), transparent 70%),
    linear-gradient(180deg, #13294b 0%, #0e1f3a 60%, #0a1424 100%);
  --hero-text:  #ffffff;
  --hero-sub:   #c6d3e3;
  --hero-muted: #93a4ba;
  --hero-grid:  rgba(123, 184, 227, 0.30);
  --hero-glow:  rgba(75, 156, 211, 0.25);
  --btn-bg:     #ffffff;
  --btn-fg:     #13294b;
  --btn-hover:  #edf5fb;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow:    0 10px 30px -12px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 30px 60px -24px rgba(0, 0, 0, 0.8);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Lato", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
sub, sup { line-height: 0; }
.m { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 0.88em; white-space: nowrap; }
.muted { color: var(--text-3); font-size: 15px; }

/* ─────────── Nav ─────────── */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 50;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--border);
}
.nav-inner {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-brand {
  font-weight: 900;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--hero-text);
  transition: color 0.3s var(--ease);
}
.nav-brand span { color: var(--carolina); }
.nav.is-scrolled .nav-brand { color: var(--text); }
.nav-brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a {
  color: var(--hero-muted);
  font-size: 15px;
  font-weight: 700;
  transition: color 0.2s var(--ease);
}
.nav-links a:hover { color: var(--hero-text); text-decoration: none; }
.nav.is-scrolled .nav-links a { color: var(--text-3); }
.nav.is-scrolled .nav-links a:hover,
.nav.is-scrolled .nav-links a.active { color: var(--text); }
.theme-toggle {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-2);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: all 0.2s var(--ease);
}
.theme-toggle:hover { transform: rotate(-12deg); }

/* ─────────── Hero ─────────── */
.hero {
  position: relative;
  overflow: hidden;
  color: var(--hero-text);
  background: var(--hero-bg);
  padding: calc(var(--nav-h) + 72px) 24px 180px;
  text-align: center;
  isolation: isolate;
}
.hero-grid {
  position: absolute;
  left: -50%; right: -50%;
  bottom: -2px;
  height: 62%;
  z-index: -1;
  background-image:
    linear-gradient(var(--hero-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid) 1px, transparent 1px);
  background-size: 64px 64px;
  transform: perspective(520px) rotateX(62deg);
  transform-origin: 50% 100%;
  mask-image: linear-gradient(to top, #000 10%, transparent 85%);
  -webkit-mask-image: linear-gradient(to top, #000 10%, transparent 85%);
  animation: grid-move 6s linear infinite;
}
@keyframes grid-move { to { background-position: 0 64px; } }
.hero-glow {
  position: absolute;
  z-index: -1;
  width: 720px; height: 720px;
  left: 50%; top: 42%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--hero-glow) 0%, transparent 65%);
  filter: blur(20px);
  animation: glow 9s ease-in-out infinite alternate;
}
@keyframes glow {
  from { transform: translate(-54%, -52%) scale(1); }
  to   { transform: translate(-46%, -48%) scale(1.12); }
}
.hero-inner { max-width: 940px; margin: 0 auto; }
.venue-pill {
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 15px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--carolina) 55%, transparent);
  background: color-mix(in srgb, var(--card) 70%, transparent);
  color: var(--hero-text);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  backdrop-filter: blur(6px);
}
.venue-pill .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #4b9cd3;
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(75, 156, 211, 0.6); }
  70%  { box-shadow: 0 0 0 9px rgba(75, 156, 211, 0); }
  100% { box-shadow: 0 0 0 0 rgba(75, 156, 211, 0); }
}
.hero-eyebrow {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--blue);
}
.hero-title {
  margin: 0;
  font-size: clamp(30px, 5.2vw, 56px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.hero-subtitle {
  margin: 14px 0 0;
  font-size: clamp(18px, 2.4vw, 25px);
  color: var(--hero-sub);
  font-weight: 400;
}
.authors {
  margin: 34px 0 6px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 22px;
  font-size: 18px;
}
.authors a { color: var(--hero-text); font-weight: 700; }
.authors a:hover { color: var(--blue); }
.authors sup { color: var(--hero-muted); margin-left: 2px; font-size: 0.7em; }
.affils {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2px 20px;
  font-size: 15px;
  color: var(--hero-muted);
}
.affils sup { margin-right: 2px; }
.hero-buttons {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  color: var(--btn-fg);
  background: var(--btn-bg);
  box-shadow: 0 8px 22px -12px rgba(19, 41, 75, 0.55);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
}
.btn:hover { transform: translateY(-2px); text-decoration: none; background: var(--btn-hover); box-shadow: 0 14px 28px -12px rgba(19, 41, 75, 0.6); }
.btn small {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text-3);
}
.btn.is-disabled {
  color: var(--hero-muted);
  background: color-mix(in srgb, var(--card) 55%, transparent);
  border: 1px dashed var(--border-2);
  box-shadow: none;
  cursor: default;
}
.btn.is-disabled:hover { transform: none; background: color-mix(in srgb, var(--card) 55%, transparent); }

/* ─────────── Layout ─────────── */
main { position: relative; z-index: 1; }
.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 96px 24px 0;
}
.section-narrow { max-width: 860px; }
.section-head { max-width: 780px; margin: 0 auto 32px; text-align: center; }
.kicker {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue);
}
.section h2 {
  margin: 0;
  font-size: clamp(26px, 3vw, 32px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
.lead { margin: 12px 0 0; color: var(--text-2); font-size: 17.5px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.note { margin: 12px 0 0; text-align: center; font-size: 13.5px; color: var(--text-4); }

/* Figures */
.figure { margin: 0; overflow: hidden; }
.figure > a { display: block; background: var(--fig-bg); padding: 18px; cursor: zoom-in; }
.figure img { margin: 0 auto; transition: transform 0.5s var(--ease); }
.figure > a:hover img { transform: scale(1.012); }
.figure figcaption {
  padding: 14px 20px 18px;
  font-size: 15px;
  color: var(--text-3);
  border-top: 1px solid var(--border);
}
.figure figcaption b { color: var(--text); }
.fig-row { display: grid; grid-template-columns: 1.25fr 1fr; gap: 24px; margin-top: 24px; align-items: start; }
.fig-row-2 { grid-template-columns: 1fr 1fr; align-items: stretch; }
.fig-row-2 .figure { height: 100%; display: flex; flex-direction: column; }
.fig-row-2 .figure > a { flex: 1; display: flex; align-items: center; }
.stack { display: flex; flex-direction: column; gap: 24px; }

/* ─────────── Teaser ─────────── */
.teaser-wrap {
  max-width: var(--container);
  margin: -130px auto 0;
  padding: 0 24px;
}
.teaser { box-shadow: var(--shadow-lg); }
.tldr {
  position: relative;
  max-width: 860px;
  margin: 40px auto 0;
  padding: 22px 26px 22px 26px;
  border-radius: var(--radius);
  background:
    linear-gradient(var(--card), var(--card)) padding-box,
    linear-gradient(120deg, var(--carolina), var(--navy)) border-box;
  border: 1.5px solid transparent;
  box-shadow: var(--shadow);
}
.tldr-tag {
  position: absolute;
  top: -12px; left: 22px;
  padding: 2px 10px;
  border-radius: 6px;
  background: linear-gradient(90deg, #4b9cd3, #13294b);
  color: #fff;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
}
.tldr p { margin: 0; font-size: 18px; color: var(--text-2); }
.tldr b { color: var(--text); }

.stats {
  max-width: 960px;
  margin: 34px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.stat {
  padding: 20px 14px 18px;
  text-align: center;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.stat-num {
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(120deg, var(--carolina), var(--navy));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat:last-child .stat-num { background: linear-gradient(120deg, var(--teal), var(--carolina)); -webkit-background-clip: text; background-clip: text; }
.stat-label { margin-top: 8px; font-size: 14px; line-height: 1.4; color: var(--text-3); }

/* ─────────── Playground ─────────── */
.playground {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  overflow: hidden;
}
.pg-stage {
  position: relative;
  background:
    radial-gradient(circle at 50% 30%, var(--blue-soft), transparent 70%),
    var(--bg-soft);
  border-right: 1px solid var(--border);
  padding: 16px;
  display: flex;
  flex-direction: column;
}
#bev { width: 100%; height: auto; flex: 1; }
.pg-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 18px;
  font-size: 13.5px;
  color: var(--text-3);
}
.lg { display: inline-block; width: 18px; height: 0; margin-right: 7px; vertical-align: middle; border-top: 3px solid; }
.lg-geo { border-color: var(--orange); border-top-style: dashed; }
.lg-center { border-color: var(--blue); }
.pg-panel { padding: 24px 24px 22px; display: flex; flex-direction: column; gap: 14px; }
.pg-presets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; padding: 4px; border-radius: 12px; background: var(--bg-soft); }
.pg-presets button {
  padding: 7px 6px;
  border: none;
  border-radius: 9px;
  background: transparent;
  color: var(--text-3);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.pg-presets button.is-active { background: var(--card); color: var(--text); box-shadow: var(--shadow-sm); }
.pg-slider { display: flex; flex-direction: column; gap: 4px; font-size: 14.5px; color: var(--text-2); }
.pg-slider > span { display: flex; justify-content: space-between; align-items: baseline; }
.pg-slider em { font-style: normal; }
.pg-slider em i { font-family: "Times New Roman", serif; font-size: 1.05em; color: var(--text-3); margin-left: 2px; }
.pg-slider output { font-family: "JetBrains Mono", monospace; font-size: 13.5px; color: var(--text); font-weight: 600; }
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--carolina) var(--p, 50%), var(--border-2) var(--p, 50%));
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--carolina);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  transition: transform 0.15s var(--ease);
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }
input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--blue);
}
input[type="range"]:focus-visible { box-shadow: 0 0 0 4px var(--blue-soft); }
.pg-play {
  align-self: flex-start;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-2);
  background: var(--card);
  color: var(--text-2);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.pg-play:hover, .pg-play.is-on { color: var(--blue); border-color: var(--blue); background: var(--blue-soft); }
.pg-play.is-on i { animation: spin 1.2s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.pg-readout { margin-top: auto; padding: 14px; border-radius: 12px; background: var(--bg-soft); }
.ro-eq { font-size: 15px; color: var(--text-2); text-align: center; min-height: 28px; }
.ro-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 10px; text-align: center; }
.ro-grid small { display: block; font-size: 12px; color: var(--text-3); }
.ro-grid b { font-family: "JetBrains Mono", monospace; font-size: 17px; font-weight: 600; }
.ro-bad b { color: var(--orange); }
.ro-grid small#ro-pct { margin-top: 2px; color: var(--orange); opacity: 0.8; }

/* SVG styling */
#bev .grid line { stroke: var(--border); stroke-width: 1; }
#bev .axis { stroke: var(--text-4); stroke-width: 1.2; stroke-dasharray: 4 5; }
#bev .axis-label { fill: var(--text-4); font-size: 12px; font-family: "Lato", sans-serif; }
#bev .box { fill: var(--blue-soft); stroke: var(--blue); stroke-width: 2.2; stroke-linejoin: round; }
#bev .heading { stroke: var(--blue); stroke-width: 2; }
#bev .heading-tip { fill: var(--blue); }
#bev .corner { fill: var(--text-4); }
#bev .corner.near { fill: var(--orange); stroke: #fff; stroke-width: 2; }
#bev .center { fill: var(--blue); stroke: #fff; stroke-width: 2; }
#bev .line-geo { stroke: var(--orange); stroke-width: 2.4; stroke-dasharray: 7 6; }
#bev .line-center { stroke: var(--blue); stroke-width: 2.4; }
#bev .ray { stroke: var(--text-4); stroke-width: 1; opacity: 0.6; }
#bev .delta { stroke: var(--orange); stroke-width: 2; }
#bev .delta-label { fill: var(--orange); font-size: 15px; font-weight: 900; font-family: "Lato", sans-serif; }
#bev .tag { font-size: 12.5px; font-weight: 700; font-family: "Lato", sans-serif; }
#bev .tag-geo { fill: var(--orange); }
#bev .tag-center { fill: var(--blue); }
#bev .cam { fill: var(--text); }
#bev .cam-label { fill: var(--text-3); font-size: 12px; font-family: "Lato", sans-serif; }
#bev .break { stroke: var(--text-4); stroke-width: 1.2; fill: none; }

/* ─────────── Abstract ─────────── */
.abstract {
  margin: 0;
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-2);
  text-align: justify;
  hyphens: auto;
}
.abstract b { color: var(--text); }

/* ─────────── Method ─────────── */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.method-card { padding: 24px 26px; position: relative; overflow: hidden; }
.method-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, #4b9cd3, #13294b);
}
.method-card:nth-child(2)::before { background: linear-gradient(90deg, #13294b, #4b9cd3); }
.mc-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.mc-num { font-family: "JetBrains Mono", monospace; font-size: 13px; font-weight: 600; color: var(--text-4); }
.mc-head h3 { margin: 0; font-size: 23px; font-weight: 900; }
.chip {
  margin-left: auto;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--teal);
  background: color-mix(in srgb, var(--teal) 12%, transparent);
  white-space: nowrap;
}
.method-card p { margin: 0 0 10px; color: var(--text-2); font-size: 16px; }
.eq {
  margin: 14px 0 16px;
  padding: 14px 10px;
  border-radius: 12px;
  background: var(--bg-soft);
  overflow-x: auto;
  text-align: center;
  font-size: 15px;
  color: var(--text);
}
.eq .katex-display { margin: 0; }

/* ─────────── Results ─────────── */
.results { padding: 8px 0 0; overflow: hidden; }
.tabs {
  display: flex;
  gap: 4px;
  padding: 10px 14px 0;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tabs button {
  position: relative;
  padding: 10px 16px 12px;
  border: none;
  background: none;
  color: var(--text-3);
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}
.tabs button::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: -1px;
  height: 2.5px;
  border-radius: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transition: transform 0.25s var(--ease);
}
.tabs button:hover { color: var(--text); }
.tabs button.is-active { color: var(--text); }
.tabs button.is-active::after { transform: scaleX(1); }
.tab-panel { display: none; padding: 16px 20px 20px; }
.tab-panel.is-active { display: block; animation: fade 0.35s var(--ease); }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.tab-caption { margin: 0 0 12px; font-size: 14px; color: var(--text-3); }
.gallery .tab-caption { margin: 12px 0 0; }
.table-scroll { overflow-x: auto; border-radius: 12px; border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; white-space: nowrap; }
th, td { padding: 8px 10px; text-align: center; }
th { font-weight: 700; color: var(--text-2); background: var(--bg-soft); border-bottom: 1px solid var(--border); }
thead tr:first-child th { border-bottom: 1px solid var(--border); }
th[colspan] { border-left: 1px solid var(--border); }
td { color: var(--text-2); border-bottom: 1px solid var(--border); }
.l { text-align: left; padding-left: 14px; }
td.l { color: var(--text); font-weight: 700; }
tr.extra td { color: var(--text-4); }
tr.extra td.l { color: var(--text-3); font-weight: 400; }
tr.sep td { border-bottom: 1.5px solid var(--border-2); }
tbody tr:hover td { background: var(--bg-soft); }
tr.ours td { background: var(--blue-soft); color: var(--text); }
tr.ours td.l { color: var(--blue); }
tr.ours:hover td { background: var(--blue-soft); }
tr.gain td { color: var(--teal); font-weight: 700; border-bottom: none; }
tr.gain td.l { color: var(--teal); font-weight: 700; }
td u { text-decoration-color: var(--text-4); text-underline-offset: 3px; }

.eff { display: flex; flex-direction: column; gap: 12px; padding: 6px 0 4px; }
.eff-row { display: grid; grid-template-columns: 90px 1fr 56px 170px; align-items: center; gap: 14px; font-size: 15px; }
.eff-name { font-weight: 700; }
.eff-bar { height: 12px; border-radius: 999px; background: var(--bg-soft); overflow: hidden; }
.eff-bar i { display: block; height: 100%; width: calc((var(--w) - 16) / 5 * 100%); border-radius: inherit; background: var(--text-4); }
.eff-row.is-ours .eff-bar i { background: linear-gradient(90deg, #4b9cd3, #2c5080); }
.eff-ap { font-family: "JetBrains Mono", monospace; font-weight: 600; }
.eff-cost { font-size: 13.5px; color: var(--text-3); }
.eff-row.is-ours .eff-cost b { color: var(--teal); }

.ablation { margin-top: 24px; padding: 24px 26px 20px; }
.abl-head h3 { margin: 0; font-size: 20px; font-weight: 900; }
.abl-head p { margin: 4px 0 16px; font-size: 14.5px; color: var(--text-3); }
.bars { display: flex; flex-direction: column; gap: 12px; }
.bar-row { display: grid; grid-template-columns: 190px 1fr 60px; align-items: center; gap: 14px; font-size: 15px; }
.bar-name { color: var(--text-2); }
.bar { height: 26px; border-radius: 8px; background: var(--bg-soft); overflow: hidden; }
.bar i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: color-mix(in srgb, var(--text-4) 55%, transparent);
  transition: width 1.1s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.bar-row.is-ours .bar i { background: linear-gradient(90deg, #4b9cd3, #2c5080); }
.bar-row.is-ours .bar-name { color: var(--text); font-weight: 900; }
.bar-v { font-family: "JetBrains Mono", monospace; font-weight: 600; text-align: right; }
.bar-row.is-ours .bar-v { color: var(--blue); }
.ablation .muted { margin: 14px 0 0; }
.results + .fig-row, .ablation + .figure, #results > .figure { margin-top: 24px; }

/* ─────────── Gallery ─────────── */
.gallery { overflow: hidden; }
.gallery .tab-panel > a,
.gal-grid a { display: block; border-radius: 12px; overflow: hidden; background: var(--fig-bg); cursor: zoom-in; }
.gal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.gal-grid img, .gallery .tab-panel > a img { transition: transform 0.5s var(--ease); }
.gal-grid a:hover img, .gallery .tab-panel > a:hover img { transform: scale(1.015); }

/* ─────────── BibTeX ─────────── */
.bib { position: relative; }
.bib pre {
  margin: 0;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: var(--bg-soft);
  color: var(--text-2);
  font-family: "JetBrains Mono", monospace;
  font-size: 13.5px;
  line-height: 1.7;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-left: 3px solid var(--carolina);
}
.copy {
  position: absolute;
  top: 12px; right: 12px;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid var(--border-2);
  background: var(--card);
  color: var(--text-2);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.copy:hover { color: var(--blue); border-color: var(--blue); background: var(--blue-soft); }
.copy.is-done { color: var(--teal); border-color: var(--teal); }

/* ─────────── Footer ─────────── */
.footer {
  margin-top: 100px;
  padding: 30px 24px 40px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 14px;
  color: var(--text-4);
}
.footer p { margin: 0; }

/* ─────────── Lightbox ─────────── */
#lightbox { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; padding: 24px; opacity: 0; transition: opacity 0.2s var(--ease); }
#lightbox.open { opacity: 1; }
#lightbox[hidden] { display: none; }
.lb-backdrop { position: absolute; inset: 0; background: rgba(10, 20, 36, 0.8); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
#lb-img { position: relative; max-width: min(96vw, 1600px); max-height: 90vh; width: auto; border-radius: 12px; background: #fff; padding: 12px; box-shadow: 0 40px 80px rgba(0, 0, 0, 0.5); }
#lb-close { position: absolute; top: 18px; right: 18px; width: 40px; height: 40px; border-radius: 50%; border: none; background: rgba(255, 255, 255, 0.14); color: #fff; font-size: 17px; cursor: pointer; }
#lb-close:hover { background: rgba(255, 255, 255, 0.26); }

/* ─────────── Reveal ─────────── */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ─────────── Responsive ─────────── */
@media (max-width: 900px) {
  .playground { grid-template-columns: 1fr; }
  .pg-stage { border-right: none; border-bottom: 1px solid var(--border); }
  .two-col, .fig-row, .fig-row-2 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .nav-links { display: none; }
  .nav-inner { justify-content: space-between; padding: 0 16px; }
  .hero { padding: calc(var(--nav-h) + 44px) 16px 140px; }
  .br-wide { display: none; }
  .authors { font-size: 16px; gap: 4px 16px; }
  .affils { font-size: 13.5px; flex-direction: column; }
  .btn { padding: 9px 16px; font-size: 14px; }
  .teaser-wrap { margin-top: -100px; padding: 0 16px; }
  .section { padding: 72px 16px 0; }
  .figure > a { padding: 10px; }
  .figure figcaption { padding: 12px 14px 14px; font-size: 14px; }
  .tldr { padding: 20px 18px 18px; }
  .tldr p { font-size: 16.5px; }
  .abstract { font-size: 16.5px; text-align: left; }
  .method-card { padding: 20px 18px; }
  .mc-head { flex-wrap: wrap; }
  .pg-panel { padding: 18px 16px; }
  .tab-panel { padding: 14px 12px 16px; }
  .eff-row { grid-template-columns: 76px 1fr 50px; }
  .eff-cost { grid-column: 1 / -1; margin-top: -8px; }
  .bar-row { grid-template-columns: 1fr 56px; gap: 4px 10px; }
  .bar-name { grid-column: 1 / -1; font-size: 14px; }
  .ablation { padding: 20px 16px 16px; }
  .gal-grid { grid-template-columns: 1fr; }
  #bev .tag { font-size: 17px; }
  #bev .delta-label { font-size: 19px; }
  #bev .axis-label, #bev .cam-label { font-size: 15px; }
  .pg-stage { padding: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}