/* ==========================================================================
   Crescendo microsite — design tokens + base
   Tokens are copied verbatim from src/app/globals.css (the app is the
   source of truth). Light theme is the canvas; dark tokens live under
   the .ink scope (terminal chips + the ff finale band only).
   ========================================================================== */

/* ---------- Self-hosted fonts (no external requests) ---------- */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/space-grotesk-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/space-grotesk-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/space-grotesk-latin-700-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Playfair Display';
  font-style: italic;
  font-weight: 800;
  font-display: swap;
  src: url('../fonts/playfair-display-latin-800-italic.woff2') format('woff2');
}
@font-face {
  font-family: 'Playfair Display';
  font-style: italic;
  font-weight: 900;
  font-display: swap;
  src: url('../fonts/playfair-display-latin-900-italic.woff2') format('woff2');
}

/* ---------- Tokens (verbatim from src/app/globals.css :root) ---------- */
:root {
  --radius: 0.5rem;
  --background: oklch(0.96 0.006 270);
  --foreground: oklch(0.4 0.022 270);
  --card: oklch(0.93 0.008 270);
  --card-foreground: oklch(0.4 0.022 270);
  --primary: oklch(0.49 0.26 300);
  --primary-foreground: oklch(0.96 0.006 270);
  --secondary: oklch(0.85 0.01 270);
  --secondary-foreground: oklch(0.4 0.022 270);
  --muted: oklch(0.85 0.01 270);
  --muted-foreground: oklch(0.52 0.017 270);
  --accent: oklch(0.8 0.01 270);
  --accent-foreground: oklch(0.4 0.022 270);
  --success: oklch(0.61 0.17 142);
  --success-foreground: oklch(0.96 0.006 270);
  --border: oklch(0.8 0.01 270);
  --ring: oklch(0.49 0.26 300);
  --shadow-sm:
    0px 1px 3px 0px oklch(0.4 0.022 270 / 0.05), 0px 1px 2px -1px oklch(0.4 0.022 270 / 0.05);
  --shadow-md:
    0px 2px 4px -1px oklch(0.4 0.022 270 / 0.06), 0px 4px 6px -1px oklch(0.4 0.022 270 / 0.06);
  --shadow-lg:
    0px 4px 6px -2px oklch(0.4 0.022 270 / 0.06), 0px 10px 15px -3px oklch(0.4 0.022 270 / 0.06);
  --tracking-normal: 0.01em;

  --font-sans: 'Space Grotesk', 'Avenir Next', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --font-brand: 'Playfair Display', Didot, Georgia, 'Times New Roman', serif;
}

/* Ink moments — verbatim from src/app/globals.css .dark (terminal chips + ff finale) */
.ink {
  --background: oklch(0.24 0.019 281);
  --foreground: oklch(0.87 0.025 269);
  --card: oklch(0.21 0.019 281);
  --card-foreground: oklch(0.87 0.025 269);
  --primary: oklch(0.76 0.13 300);
  --primary-foreground: oklch(0.17 0.019 281);
  --muted-foreground: oklch(0.6 0.02 277);
  --success: oklch(0.85 0.1 145);
  --border: oklch(0.46 0.017 280);
  --ring: oklch(0.76 0.13 300);
  background: var(--background);
  color: var(--foreground);
}

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

html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-weight: 400;
  letter-spacing: var(--tracking-normal);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wordmark {
  font-family: var(--font-brand);
  font-style: italic;
  font-weight: 900;
}

:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 3px;
  border-radius: calc(var(--radius) - 4px);
}

/* ==========================================================================
   Layout — one page, five movements. The type itself crescendos:
   dynamics marks and headings grow movement by movement.
   ========================================================================== */

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 10;
  background: var(--primary);
  color: var(--primary-foreground);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 500;
  transition: top 0.15s ease;
}
.skip-link:focus {
  top: 1rem;
}

.mono {
  font-family: var(--font-mono);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  min-height: 92svh;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.hero canvas,
.hero-lattice {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-lattice {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  align-content: center;
  justify-items: center;
  row-gap: 1.4rem;
  padding: 2rem;
  pointer-events: none;
}
.hero-lattice span {
  font-family: var(--font-mono);
  color: var(--primary);
  font-size: 1.1rem;
  opacity: 0.4;
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
  padding: 4rem 1.5rem 5rem;
  text-align: center;
}
.hero .eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--primary);
  margin: 0 0 1.25rem;
}
.brand {
  font-family: var(--font-brand);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(2.6rem, 7vw, 4.2rem);
  line-height: 1.1;
  margin: 0 0 1.5rem;
  color: var(--foreground);
}
.brand .hairpin {
  font-style: normal;
  color: var(--primary);
}
.hero h1 {
  font-weight: 700;
  font-size: clamp(1.55rem, 4vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
}
.hero h1 .line {
  display: block;
}
.hero .sub {
  font-size: clamp(0.98rem, 2vw, 1.1rem);
  color: var(--muted-foreground);
  max-width: 56ch;
  margin: 0 auto 2rem;
}
.cta-row {
  display: flex;
  gap: 0.85rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: var(--radius);
  padding: 0.7rem 1.4rem;
  text-decoration: none;
  border: 1px solid transparent;
}
.btn.primary {
  background: var(--primary);
  color: var(--primary-foreground);
}
.btn.ghost {
  background: transparent;
  color: var(--foreground);
  border-color: var(--border);
}
.chip {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  border-radius: var(--radius);
  padding: 0.7rem 1.1rem;
}
.chip.ink {
  border: 1px solid var(--border);
}

/* ---------- Movements ---------- */
main {
  display: block;
}
.movement {
  max-width: 960px;
  margin: 0 auto;
  padding: clamp(3.5rem, 9vh, 6.5rem) 1.5rem;
}
.dyn-mark {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin: 0 0 0.75rem;
}
.dyn {
  font-family: var(--font-brand);
  font-style: italic;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}
.dyn-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted-foreground);
}
.movement h2 {
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
  max-width: 24ch;
}
.movement > p,
.movement .body {
  max-width: 64ch;
  margin: 0 0 1.25rem;
}

/* the crescendo, encoded in the type scale */
.m-pp .dyn { font-size: 1.5rem; }
.m-pp h2 { font-size: clamp(1.35rem, 3vw, 1.7rem); }
.m-mp .dyn { font-size: 1.9rem; }
.m-mp h2 { font-size: clamp(1.5rem, 3.4vw, 1.95rem); }
.m-mf .dyn { font-size: 2.3rem; }
.m-mf h2 { font-size: clamp(1.6rem, 3.8vw, 2.2rem); }
.m-f .dyn { font-size: 2.8rem; }
.m-f h2 { font-size: clamp(1.7rem, 4.2vw, 2.5rem); }
.m-sotto .dyn { font-size: 1.35rem; }
.m-sotto h2 { font-size: clamp(1.3rem, 2.8vw, 1.6rem); }
.m-ff .dyn { font-size: clamp(3.5rem, 9vw, 6rem); }
.m-ff h2 { font-size: clamp(2rem, 5.5vw, 3.2rem); }

/* pp — quiet, text-only vignettes */
.vignettes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2.25rem 3rem;
  margin-top: 2.5rem;
}
.vignettes h3 {
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
}
.vignettes p {
  margin: 0;
  font-size: 0.94rem;
  color: var(--muted-foreground);
}

/* screenshots framed in a quiet browser-chrome mockup */
.shot-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 0;
  margin: 2.25rem 0 0;
  overflow: hidden;
}
.shot-card .chrome {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--border);
}
.shot-card .chrome i {
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
}
.shot-card .chrome .addr {
  margin-left: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--foreground);
}
.shot-card img {
  display: block;
  width: 100%;
  height: auto;
  border: none;
  border-radius: 0;
}
.shot-card figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--foreground);
  padding: 0.7rem 0.9rem;
  border-top: 1px solid var(--border);
}

/* f — model picker */
.model-picker {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.85rem;
  margin-top: 2rem;
}
.model-picker .model {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow-sm);
}
.model-picker .model strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}
.model-picker .model span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--foreground);
}
.model-picker .model.local-model {
  border-color: var(--success);
}

/* f — the three AI surfaces */
.modalities {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0.85rem;
  margin: 2rem 0;
}
.modalities .mode {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  box-shadow: var(--shadow-sm);
}
.modalities .mode .k {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--primary);
  margin-bottom: 0.4rem;
}
.modalities .mode strong {
  display: block;
  font-size: 1.02rem;
  margin-bottom: 0.3rem;
}
.modalities .mode p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--foreground);
}
.callout-make {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 1.1rem 1.4rem;
  margin: 2rem 0;
  max-width: 68ch;
}
.callout-make strong {
  display: block;
  margin-bottom: 0.25rem;
}
.callout-make p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--foreground);
}

/* sotto voce — security evidence list */
.m-sotto {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.evidence {
  list-style: none;
  padding: 0;
  margin: 2.25rem 0 0;
  display: grid;
  gap: 1.75rem;
}
.evidence li {
  max-width: 68ch;
}
.evidence strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.25rem;
}
.evidence p {
  margin: 0 0 0.35rem;
  font-size: 0.94rem;
  color: var(--muted-foreground);
}
.evidence .src {
  font-family: var(--font-mono);
  font-size: 0.72rem;
}
.evidence .src a {
  color: var(--primary);
  text-decoration: none;
}
.evidence .src a:hover {
  text-decoration: underline;
}

/* ff — the finale inverts to ink: the loudest bar on the darkest ground */
.finale {
  margin-top: clamp(3rem, 8vh, 5rem);
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 50% 100%, color-mix(in oklab, var(--primary) 13%, transparent), transparent 62%),
    var(--background);
}
.finale-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.finale-lattice {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(14, 1fr);
  align-content: space-evenly;
  justify-items: center;
  padding: 1.5rem;
  pointer-events: none;
}
.finale-lattice span {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--primary);
  opacity: 0.07;
}
.finale .movement,
.finale footer {
  position: relative;
}
.finale .movement {
  text-align: center;
  padding-top: clamp(4.5rem, 12vh, 8rem);
  padding-bottom: clamp(4.5rem, 12vh, 8rem);
}
.finale .dyn-mark {
  justify-content: center;
}
.finale h2 {
  margin-left: auto;
  margin-right: auto;
}
.finale .body {
  margin-left: auto;
  margin-right: auto;
  color: var(--foreground);
}
.quickstart {
  background: var(--card);
  color: var(--card-foreground);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 2rem auto;
  max-width: 34rem;
  text-align: left;
  overflow: hidden;
}
.quickstart .chrome {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  border-bottom: 1px solid var(--border);
}
.quickstart .chrome i {
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
}
.quickstart .chrome .addr {
  margin-left: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  color: var(--foreground);
}
.quickstart pre {
  margin: 0;
  padding: 1rem 1.4rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
}
.quickstart code {
  font-family: inherit;
}
.finale .cta-row {
  margin-top: 2rem;
}
.finale .license {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--foreground);
  margin: 2.25rem auto 0;
}
.finale .credit {
  font-size: 0.92rem;
  color: var(--foreground);
  margin: 0.5rem auto 0;
}
.finale .credit a {
  color: var(--primary);
}
.finale .credit a {
  color: var(--primary);
}
footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem 2rem;
  /* solid ground — the footer sits outside the animation field */
  background: var(--card);
}
.foot-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem 3rem;
  flex-wrap: wrap;
  text-align: left;
}
.foot-mark {
  font-size: 1.3rem;
  margin: 0 0 0.3rem;
}
.foot-mark .hairpin {
  color: var(--primary);
}
.foot-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  color: var(--foreground);
  max-width: 34ch;
  margin: 0;
}
.foot-links {
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding-top: 0.4rem;
}
.foot-links a {
  color: var(--foreground);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.15rem;
}
.foot-links a:hover {
  border-bottom-color: var(--primary);
}
.foot-fine {
  max-width: 960px;
  margin: 2rem auto 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--foreground);
  text-align: left;
}

/* ---------- Scroll reveals (added by JS only; no-JS stays visible) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.shown {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Floating field tuner (draft-review tool) ---------- */
.tuner {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 60;
  width: 260px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--foreground);
}
.tuner summary {
  cursor: pointer;
  padding: 0.6rem 0.9rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary);
  user-select: none;
}
.tuner-body {
  padding: 0.25rem 0.9rem 0.8rem;
  max-height: 62vh;
  overflow-y: auto;
  display: grid;
  gap: 0.55rem;
}
.tuner-row {
  display: grid;
  gap: 0.15rem;
}
.tuner-row > span {
  display: flex;
  justify-content: space-between;
  letter-spacing: 0.04em;
}
.tuner-row output {
  color: var(--primary);
}
.tuner-row input[type='range'] {
  width: 100%;
  accent-color: var(--primary);
  margin: 0;
}
.tuner-row select {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: var(--background);
  color: var(--foreground);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  padding: 0.25rem 0.4rem;
}
.tuner-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.25rem;
}
.tuner-actions button {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  background: var(--background);
  color: var(--foreground);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  padding: 0.4rem 0.5rem;
  cursor: pointer;
}
.tuner-actions button:hover {
  border-color: var(--primary);
  color: var(--primary);
}
@media (max-width: 720px) {
  .tuner {
    width: 220px;
  }
}