/* ============================================================
   AUDIOVIZ — Shell (nav, layout, hero, cards, footer)
   ============================================================ */

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

html { transition: background-color 0.25s ease; }

body, .site-nav, .nav-link, .theme-toggle, .tool-card, .btn, .panel {
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.01em;
  font-weight: 400;
  min-height: 100vh;
}

body { display: flex; flex-direction: column; }

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

/* ===== NAV ===== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 var(--gutter);
  height: var(--nav-height);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.brand span { display: none; }

.brand-glyph {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.brand-glyph path,
.brand-glyph polyline {
  stroke: var(--ink);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-spacer { flex: 1; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 6px 12px;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--ink-dim);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
}

.nav-link:hover {
  color: var(--ink);
  background: var(--bg-alt);
}

.nav-link.is-active {
  color: var(--ink);
  background: var(--bg-card);
  border-color: var(--line);
}

.nav-link[href="/roadmap/"],
.nav-link[href="/journal/"] {
  opacity: 0.28;
  pointer-events: none;
  cursor: default;
}

.nav-link--donate {
  color: var(--ink-faint);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.nav-link--donate:hover {
  color: var(--ink-dim);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  color: var(--ink-dim);
  background: none;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.18s ease, color 0.18s ease;
}

.theme-toggle:hover {
  opacity: 1;
  color: var(--ink);
  background: none;
  border: none;
}

.theme-toggle .theme-dot  { display: none; }
.theme-toggle .theme-label { display: none; }

.theme-icon { display: none; line-height: 0; }
[data-theme-mode="auto"]  .theme-icon--auto  { display: inline-flex; }
[data-theme-mode="light"] .theme-icon--light { display: inline-flex; }
[data-theme-mode="dark"]  .theme-icon--dark  { display: inline-flex; }

.theme-picker {
  position: relative;
}

.theme-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 2px 0 0;
  background: none;
  border: none;
  box-shadow: none;
  z-index: 200;
}

.theme-dropdown[hidden] { display: none; }

@keyframes theme-drop {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 0.65; transform: translateY(0); }
}

.theme-option {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px;
  border: none;
  background: none;
  color: var(--ink-dim);
  cursor: pointer;
  border-radius: 6px;
  opacity: 0;
  animation: theme-drop 0.13s ease forwards;
  transition: color 0.12s;
}

.theme-option:nth-child(1) { animation-delay: 0.00s; }
.theme-option:nth-child(2) { animation-delay: 0.05s; }
.theme-option:nth-child(3) { animation-delay: 0.10s; }

.theme-option:hover,
.theme-option.is-active {
  opacity: 1;
  color: var(--ink);
}

/* ===== PAGE ===== */
.page {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

main { flex: 1; padding-bottom: 80px; }

/* ===== HERO ===== */
.hero {
  position: relative;
  margin: 48px 0 32px;
  padding: 0 36px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.hero > * { position: relative; z-index: 1; }

.hero-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--hero-ink);
}

.hero-subtitle {
  font-size: 14px;
  color: var(--hero-ink-dim);
  max-width: 480px;
  line-height: 1.55;
}

.hero.tall { min-height: 240px; padding: 72px 36px; }

/* ===== HERO FULL (homepage) ===== */
/* Theme-relative palette. Hero bg/ink come from the active theme,
   so light theme gives a cream hero with dark lines and dark theme
   gives a slate hero with light lines. */
:root,
[data-theme="light"] {
  --hero-canvas-bg: #f2f2f2;
  --hero-canvas-ink: #1a1a1a;
  --hero-canvas-ink-dim: rgba(26, 26, 26, 0.62);
  --hero-canvas-ink-faint: rgba(26, 26, 26, 0.18);
  --hero-canvas-vignette: rgba(242, 242, 242, 0);
  --hero-canvas-vignette-edge: rgba(242, 242, 242, 0.55);
}
[data-theme="dark"] {
  --hero-canvas-bg: #0f1215;
  --hero-canvas-ink: #ebebec;
  --hero-canvas-ink-dim: rgba(235, 235, 236, 0.68);
  --hero-canvas-ink-faint: rgba(235, 235, 236, 0.18);
  --hero-canvas-vignette: rgba(15, 18, 21, 0);
  --hero-canvas-vignette-edge: rgba(15, 18, 21, 0.6);
}

.hero-full {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background: transparent;
  color: var(--hero-canvas-ink);
  padding: calc(var(--nav-height) + 60px) 24px 60px;
}

#hero-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  z-index: 0;
}

.hero-full > .hero-content,
.hero-full > .hero-watermark,
.hero-full > .hero-fineprint {
  position: relative;
  z-index: 2;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  max-width: 720px;
}

.hero-content .hero-eyebrow {
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--hero-canvas-ink-dim);
}

.hero-content h1 {
  font-size: clamp(40px, 7vw, 76px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.015em;
  color: var(--hero-canvas-ink);
}

.hero-content .hero-tagline {
  font-size: clamp(16px, 1.6vw, 20px);
  color: var(--hero-canvas-ink-dim);
  letter-spacing: 0.02em;
  line-height: 1.5;
  max-width: 540px;
}

.hero-content .hero-cta {
  margin-top: 18px;
}

.hero-full .btn {
  color: var(--hero-canvas-ink);
  border-color: var(--hero-canvas-ink-dim);
  background: transparent;
}

.hero-full .btn:hover {
  background: var(--hero-canvas-ink);
  color: var(--hero-canvas-bg);
  border-color: var(--hero-canvas-ink);
}

.hero-watermark {
  position: absolute;
  bottom: 8vh;
  left: 50%;
  transform: translateX(-50%);
  font-size: clamp(28px, 5vw, 56px);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--hero-canvas-ink-faint);
  z-index: 2;
  pointer-events: none;
  white-space: nowrap;
}

.hero-fineprint {
  position: absolute;
  bottom: 20px;
  left: 24px;
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--hero-canvas-ink-dim);
  opacity: 0.7;
  z-index: 2;
}

@media (max-width: 720px) {
  .hero-watermark { bottom: 12vh; }
  .hero-fineprint { left: 16px; bottom: 16px; }
}

/* ===== ABOUT SECTION (scrollable, below hero fold) ===== */
.about-section {
  position: relative;
  z-index: 1;
  background: transparent;
  color: var(--hero-canvas-ink);
  padding: 100px 24px 100px;
}

.about-inner {
  max-width: 600px;
  margin: 0 auto;
}

.about-inner h2 {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--hero-canvas-ink);
  margin-bottom: 14px;
  line-height: 1.2;
}

.about-inner p {
  font-size: 15px;
  color: var(--hero-canvas-ink-dim);
  line-height: 1.72;
  margin-bottom: 56px;
}

.about-inner p:last-child { margin-bottom: 0; }

/* Full-hero body: nav floats transparently over the hero. */
body.has-full-hero main {
  padding-bottom: 0;
}

body.has-full-hero .site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: transparent;
  border-bottom: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

body.has-full-hero .site-nav .nav-link {
  background: transparent;
  border-color: transparent;
  color: var(--hero-canvas-ink-dim);
}

body.has-full-hero .site-nav .nav-link:hover {
  color: var(--hero-canvas-ink);
  background: transparent;
}

body.has-full-hero .site-nav .nav-link.is-active {
  color: var(--hero-canvas-ink);
  background: transparent;
  border-color: transparent;
}

body.has-full-hero .site-nav .brand {
  color: var(--hero-canvas-ink);
}

body.has-full-hero .site-nav .brand-glyph path,
body.has-full-hero .site-nav .brand-glyph polyline {
  stroke: var(--hero-canvas-ink);
}

body.has-full-hero .site-nav .theme-toggle {
  color: var(--hero-canvas-ink-dim);
  background: transparent;
  border-color: var(--hero-canvas-ink-faint);
}

body.has-full-hero .site-nav .theme-toggle:hover {
  color: var(--hero-canvas-ink);
  border-color: var(--hero-canvas-ink-dim);
}

body.has-full-hero .site-footer {
  position: relative;
  z-index: 1;
  background: transparent;
  color: var(--hero-canvas-ink-dim);
  border-top: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* ===== MOBILE NAV ===== */
@media (max-width: 640px) {
  .site-nav {
    padding: 0 14px;
    gap: 10px;
  }
  .brand span { display: none; }
  .nav-links { gap: 2px; }
  .nav-link {
    padding: 6px 9px;
    font-size: 11.5px;
    letter-spacing: 0.01em;
  }
  .theme-toggle {
    padding: 6px 9px;
    font-size: 11px;
  }
  .theme-toggle .theme-label { display: none; }
}

/* ===== CARD GRID (WORKSPACE) ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
  margin-bottom: 40px;
}

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

.tool-card {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto 1fr;
  gap: 12px;
  min-height: 168px;
  padding: var(--card-pad);
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow-soft);
  color: inherit;
  overflow: hidden;
}

.tool-card:hover {
  border-color: var(--line-bright);
  box-shadow: var(--shadow-card);
  transform: translateY(-1px);
}

.tool-card-desc {
  grid-column: 1;
  grid-row: 1;
  font-size: 12.5px;
  color: var(--ink-dim);
  max-width: 28ch;
  line-height: 1.5;
}

.tool-card-cta {
  grid-column: 2;
  grid-row: 1;
  align-self: start;
  justify-self: end;
  padding: 5px 12px;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.tool-card:hover .tool-card-cta {
  background: var(--bg);
  border-color: var(--line-bright);
}

.tool-card-title {
  grid-column: 1;
  grid-row: 2;
  align-self: end;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.tool-card-icon {
  grid-column: 2;
  grid-row: 2;
  align-self: end;
  justify-self: end;
  width: 72px;
  height: 72px;
  flex-shrink: 0;
}

/* Isometric block — CSS-only */
.iso-block {
  display: block;
}

.iso-block path {
  stroke: var(--ink-faint);
  stroke-width: 1;
  stroke-linejoin: round;
  fill: var(--bg-alt);
}

.iso-block path.top    { fill: var(--bg);      }
.iso-block path.left   { fill: var(--bg-alt);  }
.iso-block path.right  { fill: var(--line);    }

/* Stroke-based tool icons */
.tool-icon {
  display: block;
  color: var(--ink);
  opacity: 0.4;
  transition: opacity 0.18s ease;
}

.tool-card:hover .tool-icon {
  opacity: 0.7;
}

/* ===== DETAIL PAGE (tool view) ===== */
.detail-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  margin-bottom: var(--gap);
}

@media (max-width: 820px) {
  .detail-row { grid-template-columns: 1fr; }
}

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

.panel h3 {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 10px;
}

.panel p {
  font-size: 13px;
  color: var(--ink);
  line-height: 1.6;
}

.widget-frame {
  margin-bottom: var(--gap);
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--card-radius);
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.widget-placeholder {
  color: var(--ink-faint);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: center;
}

.widget-stage {
  margin: 0 0 var(--gap);
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--card-radius);
  overflow: hidden;
  position: relative;
}

.widget-stage iframe {
  display: block;
  width: 100%;
  height: 78vh;
  min-height: 520px;
  border: 0;
  background: var(--bg-card);
}

.placeholder-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  margin-bottom: var(--gap);
}

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

.placeholder-card {
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--card-radius);
  min-height: 110px;
}

.placeholder-card h4 {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 8px;
}

.placeholder-card p {
  font-size: 12.5px;
  color: var(--ink-dim);
  line-height: 1.55;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  font-family: var(--font);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink);
  border-radius: var(--radius-pill);
  cursor: pointer;
}

.btn:hover {
  background: var(--ink);
  color: var(--bg);
}

.btn.btn-ghost {
  color: var(--ink-dim);
  border-color: var(--line);
}

.btn.btn-ghost:hover {
  color: var(--ink);
  border-color: var(--ink);
  background: transparent;
}

.hero .btn {
  color: var(--hero-ink);
  border-color: var(--hero-ink);
}

.hero .btn:hover {
  background: var(--hero-ink);
  color: var(--hero-bg);
}

/* ===== FOOTER ===== */
.site-footer {
  margin-top: auto;
  padding: 32px var(--gutter) 28px;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.site-footer .page {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer-support {
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}
.site-footer-support a {
  color: var(--ink-dim);
  text-decoration: none;
  margin: 0 2px;
  transition: color 0.2s;
}
.site-footer-support a:hover {
  color: var(--ink);
  text-decoration: underline;
}
.site-footer-support .site-footer-dot {
  margin: 0 4px;
  color: var(--ink-faint);
}

/* ===== STUB CONTENT (roadmap / journal) ===== */
.stub {
  margin: 56px 0;
  text-align: center;
  color: var(--ink-dim);
}

.stub h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.stub p { max-width: 480px; margin: 0 auto; font-size: 13px; }

/* ===== UTILITY ===== */
.mono { font-family: var(--font-mono); }