/* Union Terminal marketing site — GalaxyTrain (dark) + Supernova (light, system) */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── GalaxyTrain (default / dark system) ── */
:root {
  color-scheme: light dark;

  --bone: #f4f1ea;
  --bone-mid: #ede8df;
  --bone-deep: #dfd8cc;

  --bg: #07071a;
  --surface: #0d0d24;
  --surface2: #111130;
  --bg-card: rgba(11, 11, 30, 0.75);
  --card-bg: var(--bg-card);

  --accent: #6366f1;
  --accent-lit: #818cf8;
  --accent-dim: #4a4a8f;
  --accent-glow: rgba(99, 102, 241, 0.12);

  --text: #ecedf8;
  --muted: #9a9ab8;
  --faint: #7171a0;
  --sep: rgba(255, 255, 255, 0.07);
  --sep2: rgba(255, 255, 255, 0.04);
  --link-underline: rgba(129, 140, 248, 0.3);

  --scrim: #07071a;
  --scrim-soft: rgba(7, 7, 26, 0.94);
  --backdrop-chrome: #080819;
  --mock-surface: var(--surface);
  --mock-panel: var(--surface2);
  --elevated: #12122e;
  --tooltip-shadow: rgba(0, 0, 0, 0.4);
  --focus-overlay: rgba(10, 10, 28, 0.92);
  --error: #f87171;
  --success: #22c55e;
  --warning: #f59e0b;

  --r: 3px;
  --radius: 3px;
  --mono: 'IBM Plex Mono', 'Cascadia Code', 'Consolas', monospace;
  --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.45);

  --grid-line: rgba(255, 255, 255, 0.022);
  --scanline: rgba(0, 0, 0, 0.14);
  --vignette-color: rgba(0, 0, 0, 0.55);
  --hover-surface: rgba(255, 255, 255, 0.04);
  --hover-border: rgba(255, 255, 255, 0.14);
}

/* Supernova (light) — system preference or manual override */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    color-scheme: light;
    --bg: #ffffff;
    --surface: rgba(255, 252, 248, 0.96);
    --surface2: #f4f1ea;
    --bg-card: rgba(255, 252, 248, 0.98);
    --card-bg: var(--bg-card);
    --accent: #4f52e8;
    --accent-lit: #6366f1;
    --accent-dim: rgba(79, 82, 232, 0.35);
    --accent-glow: rgba(79, 82, 232, 0.1);
    --text: #1f1c18;
    --muted: #6b6458;
    --faint: #7a7268;
    --sep: rgba(100, 90, 75, 0.12);
    --sep2: rgba(100, 90, 75, 0.08);
    --link-underline: rgba(79, 82, 232, 0.35);
    --scrim: #ffffff;
    --scrim-soft: rgba(255, 255, 255, 0.94);
    --backdrop-chrome: #fffcf8;
    --mock-chrome: #fffcf8;
    --mock-surface: #fffcf8;
    --mock-panel: #f4f1ea;
    --mock-pane: rgba(255, 252, 248, 0.94);
    --mock-window-border: rgba(100, 90, 75, 0.14);
    --elevated: #ffffff;
    --tooltip-shadow: rgba(80, 70, 55, 0.12);
    --error: #b45309;
    --success: #15803d;
    --warning: #b45309;
    --shadow-md: 0 10px 36px rgba(80, 70, 55, 0.1), 0 0 0 1px rgba(100, 90, 75, 0.08);
    --mock-shadow: 0 12px 40px rgba(79, 82, 232, 0.08), 0 4px 16px rgba(80, 70, 55, 0.06),
      0 0 0 1px rgba(100, 90, 75, 0.1);
    --grid-line: transparent;
    --scanline: transparent;
    --vignette-color: transparent;
    --hover-surface: rgba(237, 232, 223, 0.75);
    --hover-border: rgba(100, 90, 75, 0.22);
    --focus-overlay: rgba(255, 252, 248, 0.98);
    --support-banner-bg: rgba(79, 82, 232, 0.06);
    --support-banner-border: rgba(79, 82, 232, 0.2);
    --syntax-hl: #5b52c4;
    --syntax-kw: #4f52e8;
    --syntax-str: #15803d;
  }
}

html[data-theme='light'] {
  color-scheme: light;
  --bg: #ffffff;
  --surface: rgba(255, 252, 248, 0.96);
  --surface2: #f4f1ea;
  --bg-card: rgba(255, 252, 248, 0.98);
  --card-bg: var(--bg-card);
  --accent: #4f52e8;
  --accent-lit: #6366f1;
  --accent-dim: rgba(79, 82, 232, 0.35);
  --accent-glow: rgba(79, 82, 232, 0.1);
  --text: #1f1c18;
  --muted: #6b6458;
  --faint: #7a7268;
  --sep: rgba(100, 90, 75, 0.12);
  --sep2: rgba(100, 90, 75, 0.08);
  --link-underline: rgba(79, 82, 232, 0.35);
  --scrim: #ffffff;
  --scrim-soft: rgba(255, 255, 255, 0.94);
  --backdrop-chrome: #fffcf8;
  --mock-chrome: #fffcf8;
  --mock-surface: #fffcf8;
  --mock-panel: #f4f1ea;
  --mock-pane: rgba(255, 252, 248, 0.94);
  --mock-window-border: rgba(100, 90, 75, 0.14);
  --elevated: #ffffff;
  --tooltip-shadow: rgba(80, 70, 55, 0.12);
  --error: #b45309;
  --success: #15803d;
  --warning: #b45309;
  --shadow-md: 0 10px 36px rgba(80, 70, 55, 0.1), 0 0 0 1px rgba(100, 90, 75, 0.08);
  --mock-shadow: 0 12px 40px rgba(79, 82, 232, 0.08), 0 4px 16px rgba(80, 70, 55, 0.06),
    0 0 0 1px rgba(100, 90, 75, 0.1);
  --grid-line: transparent;
  --scanline: transparent;
  --vignette-color: transparent;
  --hover-surface: rgba(237, 232, 223, 0.75);
  --hover-border: rgba(100, 90, 75, 0.22);
  --focus-overlay: rgba(255, 252, 248, 0.98);
  --support-banner-bg: rgba(79, 82, 232, 0.06);
  --support-banner-border: rgba(79, 82, 232, 0.2);
  --syntax-hl: #5b52c4;
  --syntax-kw: #4f52e8;
  --syntax-str: #15803d;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
  }
}

html[data-theme='dark'] {
  color-scheme: dark;
}

html {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── Backdrops ── */
.site-backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.backdrop-galaxy,
.backdrop-supernova {
  position: absolute;
  inset: 0;
}

.backdrop-galaxy { display: block; }
.backdrop-supernova { display: none; }

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .backdrop-galaxy {
    display: none;
  }
  :root:not([data-theme]) .backdrop-supernova {
    display: block;
  }
}

html[data-theme='light'] .backdrop-galaxy {
  display: none;
}

html[data-theme='light'] .backdrop-supernova {
  display: block;
}

.backdrop-crt-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 35%, black 10%, transparent 75%);
}

.backdrop-scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    var(--scanline) 3px,
    var(--scanline) 4px
  );
  opacity: 0.25;
}

.backdrop-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, var(--vignette-color) 100%);
}

.backdrop-stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 4% 9%, rgba(255, 255, 255, 0.8) 0%, transparent 100%),
    radial-gradient(1px 1px at 18% 22%, rgba(255, 255, 255, 0.65) 0%, transparent 100%),
    radial-gradient(1px 1px at 31% 16%, rgba(255, 255, 255, 0.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 52% 3%, rgba(255, 255, 255, 0.75) 0%, transparent 100%),
    radial-gradient(1px 1px at 66% 8%, rgba(255, 255, 255, 0.65) 0%, transparent 100%),
    radial-gradient(1px 1px at 79% 5%, rgba(255, 255, 255, 0.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 92% 26%, rgba(255, 255, 255, 0.6) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 7% 44%, rgba(180, 160, 255, 0.7) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 47% 53%, rgba(180, 160, 255, 0.65) 0%, transparent 100%),
    radial-gradient(2px 2px at 14% 80%, rgba(99, 102, 241, 0.8) 0%, transparent 100%),
    radial-gradient(2px 2px at 68% 91%, rgba(99, 102, 241, 0.75) 0%, transparent 100%);
}

.backdrop-nebula {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 30% at 20% 40%, rgba(99, 102, 241, 0.07) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 80% 70%, rgba(139, 92, 246, 0.06) 0%, transparent 70%);
}

.supernova-radial {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse 88% 72% at 50% 32%,
      #ffffff 0%,
      var(--bone) 42%,
      var(--bone-mid) 72%,
      var(--bone-deep) 100%
    );
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .supernova-radial {
    background:
      radial-gradient(
        ellipse 100% 80% at 50% 18%,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(255, 252, 248, 0.45) 42%,
        transparent 72%
      );
  }

  :root:not([data-theme]) .supernova-edge {
    opacity: 0.35;
  }

  :root:not([data-theme]) .supernova-glow {
    opacity: 0.5;
  }
}

html[data-theme='light'] .supernova-radial {
  background:
    radial-gradient(
      ellipse 100% 80% at 50% 18%,
      rgba(255, 255, 255, 0.9) 0%,
      rgba(255, 252, 248, 0.45) 42%,
      transparent 72%
    );
}

html[data-theme='light'] .supernova-edge {
  opacity: 0.35;
}

html[data-theme='light'] .supernova-glow {
  opacity: 0.5;
}

.supernova-edge {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 140% 100% at 50% 100%, var(--bone-deep) 0%, transparent 55%),
    radial-gradient(ellipse 90% 80% at 0% 50%, rgba(223, 216, 204, 0.35) 0%, transparent 50%),
    radial-gradient(ellipse 90% 80% at 100% 50%, rgba(223, 216, 204, 0.35) 0%, transparent 50%);
}

.supernova-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse 58% 44% at 50% 24%,
      rgba(255, 255, 255, 0.95) 0%,
      rgba(255, 253, 248, 0.45) 38%,
      transparent 68%
    );
  animation: supernovaGlow 6s ease-in-out infinite alternate;
}

@keyframes supernovaGlow {
  from { opacity: 0.18; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .supernova-glow { animation: none; opacity: 0.55; }
}

/* ── Layout ── */
.page {
  position: relative;
  z-index: 1;
  margin: 0 auto;
  padding: 0 clamp(20px, 3.5vw, 48px) 80px;
}

.page--wide { max-width: 1280px; padding-bottom: 96px; }
.page--narrow { max-width: 800px; }
.page--guide { max-width: 960px; }
.page--legal {
  max-width: 720px;
  padding: 0 24px 80px;
  --radius: 10px;
}

/* ── Nav ── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 0;
  gap: 16px;
  flex-wrap: wrap;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo img {
  width: 28px;
  height: 28px;
  border-radius: 2px;
}

.nav-wordmark {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.02em;
}

.nav-wordmark span {
  font-weight: 400;
  color: var(--faint);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nav-link {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
  transition: color 150ms;
  letter-spacing: 0.02em;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--accent-lit);
}

/* ── Footer ── */
footer,
.site-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--sep);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-brand {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent-lit);
}

.footer-built-by {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  opacity: 0.9;
  transition: opacity 0.2s;
}

.footer-built-by:hover {
  opacity: 1;
}

.footer-built-by span {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.footer-robot-logo {
  height: 22px;
  width: auto;
  object-fit: contain;
}

/* Match app robotLogoForTheme: light.png = light text (dark UI), dark.png = dark text (light UI) */
.footer-robot-logo--light {
  display: block;
}

.footer-robot-logo--dark {
  display: none;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .footer-robot-logo--light {
    display: none;
  }

  :root:not([data-theme]) .footer-robot-logo--dark {
    display: block;
  }
}

html[data-theme='light'] .footer-robot-logo--light {
  display: none;
}

html[data-theme='light'] .footer-robot-logo--dark {
  display: block;
}

html[data-theme='dark'] .footer-robot-logo--light {
  display: block;
}

html[data-theme='dark'] .footer-robot-logo--dark {
  display: none;
}

/* ── Theme toggle (nav) ── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  padding: 0;
  margin: 0;
  border: 1px solid var(--sep);
  border-radius: var(--r);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color 150ms, border-color 150ms, background 150ms;
}

.theme-toggle:hover {
  color: var(--accent-lit);
  border-color: var(--accent-dim);
  background: var(--accent-glow);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent-lit);
  outline-offset: 2px;
}

.theme-toggle svg {
  display: block;
  width: 15px;
  height: 15px;
}

/* ── Typography helpers ── */
.page-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: var(--muted);
  font-weight: 400;
  margin-bottom: 12px;
}

.page-label::before {
  content: '// ';
  color: var(--accent-dim);
}

.page-label--upper {
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.page-label--upper::before {
  content: none;
}

h1 {
  letter-spacing: -0.03em;
}

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

.prose-link {
  color: var(--accent-lit);
  text-decoration: none;
  border-bottom: 1px solid var(--link-underline);
}

.prose-link:hover {
  border-color: var(--accent-lit);
}

/* ── Guide page ── */
.guide h1 {
  font-size: clamp(28px, 4vw, 36px);
  margin: 32px 0 8px;
}

.guide .lead {
  max-width: 52ch;
  margin-bottom: 32px;
}

.guide-layout {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  align-items: start;
}

@media (max-width: 720px) {
  .guide-layout {
    grid-template-columns: 1fr;
  }
  .guide-toc {
    position: static !important;
  }
}

.guide-toc {
  position: sticky;
  top: 24px;
  font-family: var(--mono);
  font-size: 12px;
}

.guide-toc a {
  display: block;
  color: var(--muted);
  text-decoration: none;
  padding: 4px 0;
  line-height: 1.45;
}

.guide-toc a:hover {
  color: var(--accent-lit);
}

.guide section {
  margin-bottom: 40px;
  scroll-margin-top: 24px;
}

.guide section h2 {
  font-size: 20px;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.guide section p {
  color: var(--muted);
  margin-bottom: 12px;
  max-width: 62ch;
}

.guide ol {
  margin: 0 0 12px 1.2rem;
  color: var(--muted);
}

.guide ol li {
  margin-bottom: 6px;
}

.chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 8px;
  border: 1px solid var(--sep);
  border-radius: 999px;
  color: var(--accent-lit);
  margin-top: 4px;
}

/* ── Shortcuts table ── */
.shortcuts-page h1 {
  font-size: clamp(28px, 4vw, 34px);
  margin: 0 0 8px;
}

.shortcuts-page .lead {
  max-width: 52ch;
  margin-bottom: 0;
}

.shortcuts-table {
  position: relative;
  z-index: 1;
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.shortcuts-table th,
.shortcuts-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--sep);
  vertical-align: top;
}

.shortcuts-table th {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  text-transform: lowercase;
  font-weight: 500;
}

.shortcuts-table td:first-child {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent-lit);
  white-space: nowrap;
}

.shortcuts-table td:nth-child(2) {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}

/* ── Legal pages ── */
.legal-page {
  font-family: 'Inter', system-ui, sans-serif;
}

.legal-hero {
  padding: 64px 0 48px;
}

.legal-hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  margin-bottom: 10px;
}

.legal-hero-meta {
  font-size: 13px;
  color: var(--muted);
}

.legal-content {
  background: var(--bg-card);
  border: 1px solid var(--sep);
  border-radius: var(--radius);
  padding: 36px 40px;
  backdrop-filter: blur(8px);
}

.legal-content h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin: 28px 0 10px;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 12px;
}

.legal-content p:last-child {
  margin-bottom: 0;
}

.legal-content ul {
  list-style: none;
  padding: 0;
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.legal-content ul li {
  font-size: 14px;
  color: var(--muted);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.6;
}

.legal-content ul li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--faint);
  flex-shrink: 0;
  margin-top: 8px;
}

.legal-content a {
  color: var(--accent-lit);
  text-decoration: none;
  border-bottom: 1px solid var(--link-underline);
}

.legal-content a:hover {
  border-color: var(--accent-lit);
}

.legal-content code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
}

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

.sep-line {
  height: 1px;
  background: var(--sep);
  margin: 24px 0;
}

@media (max-width: 600px) {
  .legal-content {
    padding: 24px 20px;
  }
  footer,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ── Contribute / support checkout ── */
.contribute-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 520px);
  gap: clamp(20px, 3vw, 40px);
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 36px 0 16px;
}

.contribute-art {
  position: relative;
  width: 100%;
  margin: 0;
  line-height: 0;
  overflow: visible;
}

.contribute-art-float {
  position: relative;
  display: block;
  width: 100%;
  will-change: transform;
  animation: contribute-train-glide 10s ease-in-out infinite;
}

.contribute-art-aura {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  -webkit-mask-image: url('images/contribute-hero.png');
  mask-image: url('images/contribute-hero.png');
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
}

.contribute-art-aura::before {
  content: '';
  position: absolute;
  inset: -12%;
  background:
    radial-gradient(
      ellipse 55% 45% at 78% 48%,
      rgba(167, 139, 250, 0.55) 0%,
      rgba(99, 102, 241, 0.22) 34%,
      transparent 62%
    ),
    radial-gradient(
      ellipse 50% 55% at 42% 52%,
      rgba(56, 189, 248, 0.16) 0%,
      transparent 58%
    );
  filter: blur(32px);
  animation: contribute-glow-pulse 8s ease-in-out infinite alternate;
}

.contribute-art-float img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  filter:
    drop-shadow(0 12px 32px rgba(0, 0, 0, 0.3))
    drop-shadow(0 0 22px rgba(99, 102, 241, 0.28))
    drop-shadow(6px 0 32px rgba(129, 140, 248, 0.2));
}

@keyframes contribute-train-glide {
  0%,
  100% {
    transform: translate3d(-5px, 2px, 0);
  }
  50% {
    transform: translate3d(12px, -5px, 0);
  }
}

@keyframes contribute-glow-pulse {
  from {
    opacity: 0.65;
  }
  to {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .contribute-art-float,
  .contribute-art-aura::before {
    animation: none;
  }
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .contribute-art-aura::before {
    background:
      radial-gradient(
        ellipse 55% 45% at 78% 48%,
        rgba(79, 82, 232, 0.38) 0%,
        rgba(129, 140, 248, 0.14) 36%,
        transparent 62%
      ),
      radial-gradient(
        ellipse 50% 55% at 42% 52%,
        rgba(79, 82, 232, 0.1) 0%,
        transparent 58%
      );
    filter: blur(36px);
  }

  :root:not([data-theme]) .contribute-art-float img {
    filter:
      drop-shadow(0 8px 24px rgba(80, 70, 55, 0.1))
      drop-shadow(0 0 24px rgba(79, 82, 232, 0.22))
      drop-shadow(4px 0 24px rgba(129, 140, 248, 0.12));
  }
}

html[data-theme='light'] .contribute-art-aura::before {
  background:
    radial-gradient(
      ellipse 55% 45% at 78% 48%,
      rgba(79, 82, 232, 0.38) 0%,
      rgba(129, 140, 248, 0.14) 36%,
      transparent 62%
    ),
    radial-gradient(
      ellipse 50% 55% at 42% 52%,
      rgba(79, 82, 232, 0.1) 0%,
      transparent 58%
    );
  filter: blur(36px);
}

html[data-theme='light'] .contribute-art-float img {
  filter:
    drop-shadow(0 8px 24px rgba(80, 70, 55, 0.1))
    drop-shadow(0 0 24px rgba(79, 82, 232, 0.22))
    drop-shadow(4px 0 24px rgba(129, 140, 248, 0.12));
}

@media (max-width: 900px) {
  .contribute-layout {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 28px;
  }

  .contribute-art {
    max-width: 520px;
    margin: 0 auto;
  }

  .support-stack {
    max-width: 600px;
    margin: 0 auto;
  }
}

.support-stack {
  max-width: none;
  margin: 0;
  padding-top: 0;
  text-align: center;
}

.contribute-page .hero {
  padding: 0 0 28px;
}

.contribute-page .hero h1 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.contribute-page .hero-lead {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.75;
  margin: 0 auto;
  max-width: 42ch;
}

.hero-lead {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.75;
  margin: 0 auto;
}

.checkout-content {
  background: var(--bg-card);
  border: 1px solid var(--sep);
  border-radius: var(--radius);
  padding: 28px 32px;
  text-align: left;
}

.contribute-page .content {
  background: var(--bg-card);
  border: 1px solid var(--sep);
  border-radius: var(--radius);
  padding: 28px 32px;
  text-align: left;
}

.mode-toggle {
  display: flex;
  background: transparent;
  border: 1px solid var(--sep);
  border-radius: var(--radius);
  padding: 3px;
  margin-bottom: 28px;
}

.mode-btn {
  flex: 1;
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
  background: transparent;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: color 150ms, background 150ms;
}

.mode-btn:hover {
  color: var(--text);
}

.mode-btn.active {
  color: var(--accent-lit);
  background: var(--accent-glow);
  box-shadow: inset 0 0 0 1px var(--accent-dim);
}

.amount-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: var(--muted);
  font-weight: 400;
  margin-bottom: 12px;
}

.amount-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.amount-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 14px 8px;
  background: transparent;
  border: 1px solid var(--sep);
  border-radius: 2px;
  cursor: pointer;
  transition: border-color 150ms, background 150ms;
  font-family: var(--mono);
  color: inherit;
}

.amount-card:hover {
  border-color: var(--accent-dim);
  background: var(--accent-glow);
}

.amount-card.selected {
  border-color: var(--accent-lit);
  background: var(--accent-glow);
}

.amount-value {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}

.amount-sub {
  font-size: 11px;
  color: var(--muted);
}

.custom-wrap {
  display: none;
  margin-bottom: 24px;
}

.custom-wrap.visible {
  display: block;
}

.custom-input-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.custom-prefix {
  font-size: 16px;
  font-weight: 500;
  color: var(--muted);
}

.custom-input {
  flex: 1;
  max-width: 140px;
  padding: 10px 14px;
  font-size: 14px;
  font-family: var(--mono);
  font-weight: 400;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--sep);
  border-radius: 2px;
  outline: none;
  transition: border-color 150ms;
}

.custom-input:focus {
  border-color: var(--accent-dim);
}

.custom-input::placeholder {
  color: var(--faint);
}

.custom-hint {
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
}

.checkout-btn {
  display: block;
  width: 100%;
  padding: 12px 24px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--accent-lit);
  background: transparent;
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 150ms, border-color 150ms, color 150ms, opacity 150ms;
  margin-top: 8px;
}

.checkout-btn:hover:not(:disabled) {
  background: var(--accent-glow);
  border-color: var(--accent-lit);
  color: var(--text);
}

.checkout-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.checkout-btn.loading {
  opacity: 0.7;
  cursor: wait;
}

.fine-print {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  text-align: center;
  margin-top: 16px;
  line-height: 1.6;
}

.manage-sub {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--sep);
}

.manage-label {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: lowercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 8px;
}

.manage-label::before {
  content: '// ';
  color: var(--accent-dim);
}

.manage-hint {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.tip-term {
  position: relative;
  display: inline;
  cursor: help;
  color: var(--accent-lit);
  border-bottom: 1px dotted var(--accent-dim);
}

.tip-bubble {
  position: absolute;
  z-index: 10;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 240px;
  padding: 10px 12px;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text);
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--sep);
  border-radius: var(--radius);
  box-shadow: var(--tooltip-shadow);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 150ms, visibility 150ms;
}

.tip-bubble::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--sep);
}

.tip-term:hover .tip-bubble,
.tip-term:focus .tip-bubble,
.tip-term:focus-within .tip-bubble {
  opacity: 1;
  visibility: visible;
}

.manage-row {
  display: flex;
  gap: 8px;
}

.manage-email {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--sep);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 150ms;
}

.manage-email:focus {
  border-color: var(--accent-dim);
}

.manage-email::placeholder {
  color: var(--faint);
}

.manage-btn {
  flex-shrink: 0;
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--sep);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 150ms, border-color 150ms, color 150ms;
}

.manage-btn:hover:not(:disabled) {
  color: var(--text);
  border-color: var(--accent-dim);
  background: var(--accent-glow);
}

.manage-btn:disabled {
  opacity: 0.5;
  cursor: wait;
}

.manage-error {
  display: none;
  font-size: 12px;
  color: var(--error);
  margin-top: 10px;
  line-height: 1.5;
}

.manage-error.visible {
  display: block;
}

.manage-success {
  display: none;
  font-size: 13px;
  color: var(--muted);
  margin-top: 12px;
  line-height: 1.6;
  padding: 12px 14px;
  border: 1px solid var(--sep);
  border-radius: var(--radius);
  background: var(--accent-glow);
}

.manage-success.visible {
  display: block;
}

.error-msg {
  display: none;
  font-size: 13px;
  color: var(--error);
  text-align: center;
  margin-top: 12px;
}

.error-msg.visible {
  display: block;
}

.success-panel {
  text-align: center;
  padding: 12px 0;
}

.success-panel h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

.success-panel p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 24px;
}

.success-link {
  display: inline-block;
  font-size: 13px;
  color: var(--accent-lit);
  text-decoration: none;
  border-bottom: 1px solid var(--link-underline);
}

.success-link:hover {
  border-color: var(--accent-lit);
}

@media (min-width: 1400px) {
  .page--wide {
    max-width: 1360px;
  }
}

@media (max-width: 600px) {
  .contribute-page .content {
    padding: 24px 20px;
  }
  .amount-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .manage-row {
    flex-direction: column;
  }
}