/* Minimal, modern styling for a paper/demo project page (GitHub Pages). */

:root {
  --bg: #0b0d12;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-2: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --muted-2: rgba(255, 255, 255, 0.6);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);

  --accent: #8b5cf6;
  --accent-2: #22c55e;
  --danger: #ef4444;
  --ring: 0 0 0 4px rgba(139, 92, 246, 0.25);

  --radius: 16px;
  --radius-sm: 12px;

  --max: 1120px;
  --pad: 22px;
  --pad-lg: 30px;

  --font: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Noto Sans",
    "Apple Color Emoji", "Segoe UI Emoji";
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f8fafc;
    --panel: rgba(15, 23, 42, 0.04);
    --panel-2: rgba(15, 23, 42, 0.06);
    --border: rgba(15, 23, 42, 0.12);
    --text: rgba(2, 6, 23, 0.92);
    --muted: rgba(2, 6, 23, 0.72);
    --muted-2: rgba(2, 6, 23, 0.6);
    --shadow: 0 18px 50px rgba(2, 6, 23, 0.14);
    --ring: 0 0 0 4px rgba(139, 92, 246, 0.18);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  /* Solid background to avoid any viewport-dependent banding. */
  background: var(--bg);
  line-height: 1.55;
}

body::before {
  content: none;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New",
    monospace;
}

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 18px;
}

.skip-link {
  position: absolute;
  left: 10px;
  top: 10px;
  transform: translateY(-140%);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  box-shadow: var(--shadow);
}

.skip-link:focus {
  transform: translateY(0);
  outline: none;
  box-shadow: var(--shadow), var(--ring);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.brand__mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 34px;
  border-radius: 11px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.95), rgba(34, 197, 94, 0.75));
  color: white;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.brand__text {
  font-weight: 700;
  opacity: 0.95;
}

.nav {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 10px;
}

.nav a:hover {
  background: var(--panel);
  text-decoration: none;
  color: var(--text);
}

.hero {
  padding: 54px 0 26px;
}

.hero .container {
  max-width: 1320px;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: start;
}

.hero__copy {
  max-width: 1100px;
  margin: 0 auto;
}

.title {
  margin: 0 0 10px;
  font-size: clamp(24px, 2.5vw, 36px);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.no-wrap {
  white-space: nowrap;
}

.authors,
.venue {
  margin: 0;
}

.authors {
  color: var(--muted);
  font-weight: 500;
}

.authors__item {
  white-space: nowrap;
}

.sep {
  opacity: 0.55;
  margin: 0 4px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  padding: 6px 10px;
  border-radius: 999px;
  font-weight: 650;
  letter-spacing: 0.2px;
}

.venue {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.venue__text {
  color: var(--muted);
  font-weight: 500;
}

.links {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-weight: 650;
  letter-spacing: 0.1px;
}

.btn:hover {
  background: var(--panel-2);
  text-decoration: none;
}

.btn:focus {
  outline: none;
  box-shadow: var(--ring);
}

.btn--primary {
  border-color: color-mix(in srgb, var(--accent) 65%, var(--border));
  background: color-mix(in srgb, var(--accent) 22%, var(--panel));
}

.btn[aria-disabled="true"] {
  opacity: 0.65;
  cursor: not-allowed;
}

.note {
  margin: 14px 0 0;
  color: var(--muted-2);
}

.section {
  padding: 30px 0;
}

.section--alt {
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.06), transparent);
}

.section__header h2 {
  margin: 0 0 6px;
  font-size: 24px;
  letter-spacing: -0.01em;
}

.muted {
  color: var(--muted);
  margin: 0;
}

.small {
  font-size: 13px;
}

.grid {
  margin-top: 16px;
  display: grid;
  gap: 14px;
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 980px) {
  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

.card {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: var(--pad);
  box-shadow: var(--shadow);
}

.card--media {
  padding: 14px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.bullets {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.bullets strong {
  color: var(--text);
}

.media {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
}

.caption {
  margin-top: 10px;
  color: var(--muted-2);
  font-size: 13px;
}

.video {
  width: 100%;
  min-height: 520px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #000;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  object-fit: contain;
}

@media (max-width: 980px) {
  .video {
    min-height: 360px;
  }
}

.callout {
  margin-top: 14px;
  border: 1px dashed color-mix(in srgb, var(--accent) 60%, var(--border));
  background: color-mix(in srgb, var(--accent) 10%, var(--panel));
  border-radius: var(--radius);
  padding: 16px 18px;
}

.callout__title {
  font-weight: 750;
  letter-spacing: -0.01em;
}

.callout__body {
  margin-top: 6px;
  color: var(--muted);
}

.cite__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: start;
}

@media (max-width: 720px) {
  .cite__row {
    grid-template-columns: 1fr;
  }
}

.code {
  margin: 0;
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  color: var(--text);
  overflow: auto;
  max-height: 320px;
}

.table-wrap {
  overflow: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
}

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 980px;
  font-size: 13px;
}

.table th,
.table td {
  padding: 10px 10px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
  text-align: center;
  vertical-align: middle;
  color: var(--text);
  white-space: nowrap;
}

.table th {
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  z-index: 1;
  font-weight: 750;
}

.table th:first-child,
.table td:first-child {
  text-align: left;
}

.table__spacer {
  width: 14px;
  padding: 0 !important;
  border-bottom-color: transparent;
  background: transparent;
}

.table__divider td {
  padding: 0;
  height: 10px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 90%, transparent);
  background: transparent;
}

.hl {
  background: color-mix(in srgb, #9ca3af 22%, transparent);
  border-radius: 8px;
}

.footer {
  padding: 26px 0 40px;
  border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}