/*
  turingos-deck.css — Turing AI OS presentation
  16:9 slides on black, scaled to fit the viewport. Prints one slide per page.
*/

:root {
  --d-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --d-black: #05060a;
  --d-text: #f4f6fb;
  --d-muted: #98a0b2;
  --d-dim: #666e80;
  --d-line: rgba(255, 255, 255, 0.1);
  --d-line-strong: rgba(255, 255, 255, 0.2);
  --d-blue: #4c8dff;
  --d-violet: #a06cff;
  --d-teal: #2fd8c0;
  --d-warm: #ffb27a;
  --d-arc: linear-gradient(90deg, #2fd8c0, #4c8dff, #a06cff, #ffb27a);
  --d-silver: linear-gradient(180deg, #ffffff 0%, #cfd4e0 55%, #8f96a8 100%);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--d-black);
  color: var(--d-text);
  font-family: var(--d-font);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

::selection { background: rgba(76, 141, 255, 0.35); }

/* ── Stage ─────────────────────────────────────────────── */

.deck {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
}

.deck-stage {
  position: relative;
  width: 1280px;
  height: 720px;
  transform-origin: center center;
  flex: none;
}

.slide {
  position: absolute;
  inset: 0;
  padding: 76px 88px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(18px);
  transition: opacity 0.5s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
              visibility 0s linear 0.5s;
}

.slide.is-active {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
}

/* ── Type ──────────────────────────────────────────────── */

.s-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--d-dim);
  margin: 0 0 20px;
}

.s-title {
  font-size: 58px;
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.06;
  margin: 0 0 22px;
}

.s-title-sm {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 20px;
}

.s-lead {
  font-size: 22px;
  line-height: 1.55;
  color: var(--d-muted);
  margin: 0;
  max-width: 900px;
}

.s-lead-lg {
  font-size: 30px;
  line-height: 1.45;
  color: var(--d-text);
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0;
  max-width: 950px;
}

.grad { background: var(--d-arc); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.silver { background: var(--d-silver); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.dim { color: var(--d-dim); }
em { font-style: italic; color: var(--d-text); }

/* ── Title slide ───────────────────────────────────────── */

.slide-title { text-align: center; align-items: center; }

.slide-title::before {
  content: "";
  position: absolute;
  top: 46%;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translate(-50%, -50%);
  background:
    radial-gradient(circle at 40% 42%, rgba(47, 216, 192, 0.14), transparent 46%),
    radial-gradient(circle at 60% 44%, rgba(76, 141, 255, 0.22), transparent 48%),
    radial-gradient(circle at 52% 62%, rgba(160, 108, 255, 0.16), transparent 52%);
  filter: blur(40px);
  pointer-events: none;
}

.slide-title > * { position: relative; }

.deck-orb {
  width: 190px;
  margin: 0 auto 28px;
  filter: drop-shadow(0 0 50px rgba(76, 141, 255, 0.35));
}

.deck-wordmark {
  font-size: 92px;
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1;
  margin: 0 0 18px;
  background: var(--d-silver);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.deck-tagline {
  font-size: 27px;
  color: var(--d-text);
  margin: 0 0 12px;
  letter-spacing: -0.015em;
}

.deck-byline {
  font-size: 15px;
  color: var(--d-dim);
  margin: 0;
  letter-spacing: 0.06em;
}

/* ── Layout helpers ────────────────────────────────────── */

.s-cols {
  display: grid;
  gap: 22px;
  margin-top: 40px;
}

.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }

.s-split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.s-card {
  border: 1px solid var(--d-line);
  border-radius: 18px;
  padding: 26px 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012));
}

.s-card h3 {
  font-size: 20px;
  font-weight: 650;
  margin: 0 0 10px;
  letter-spacing: -0.015em;
}

.s-card p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--d-muted);
  margin: 0;
}

.s-card-num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--d-blue);
  margin: 0 0 12px;
}

/* Bulleted lists */
.s-list {
  list-style: none;
  padding: 0;
  margin: 30px 0 0;
  display: grid;
  gap: 16px;
}

.s-list li {
  position: relative;
  padding-left: 30px;
  font-size: 19px;
  line-height: 1.5;
  color: var(--d-muted);
}

.s-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--d-arc);
}

.s-list strong { color: var(--d-text); font-weight: 650; }

.s-list-tight li { font-size: 17px; }

/* Metric row */
.s-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--d-line);
  border: 1px solid var(--d-line);
  border-radius: 18px;
  overflow: hidden;
  margin-top: 46px;
}

.s-metrics div { background: var(--d-black); padding: 28px 24px; }

.s-metrics dt {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.035em;
  margin: 0 0 6px;
  background: var(--d-silver);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.s-metrics dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.45;
  color: var(--d-muted);
}

/* ── Architecture stack ────────────────────────────────── */

.s-stack {
  display: grid;
  gap: 10px;
  margin-top: 34px;
}

.s-layer {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 26px;
  align-items: center;
  padding: 20px 26px;
  border-radius: 14px;
  border: 1px solid var(--d-line);
  background: rgba(255, 255, 255, 0.025);
}

.s-layer-ours {
  border-color: rgba(76, 141, 255, 0.45);
  background: linear-gradient(90deg, rgba(76, 141, 255, 0.14), rgba(76, 141, 255, 0.03));
}

.s-layer b {
  font-size: 17px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.s-layer span {
  font-size: 15px;
  color: var(--d-muted);
  line-height: 1.5;
}

.s-layer-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--d-blue);
  display: block;
  margin-top: 4px;
}

/* ── Two-column status (works / building) ──────────────── */

.s-status {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 36px;
}

.s-status section {
  border: 1px solid var(--d-line);
  border-radius: 18px;
  padding: 28px 26px;
}

.s-status-now { border-color: rgba(47, 216, 192, 0.35); background: rgba(47, 216, 192, 0.045); }
.s-status-next { border-color: rgba(255, 178, 122, 0.3); background: rgba(255, 178, 122, 0.04); }

.s-status h3 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 18px;
}

.s-status-now h3 { color: var(--d-teal); }
.s-status-next h3 { color: var(--d-warm); }

.s-status ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 11px;
}

.s-status li {
  font-size: 16px;
  line-height: 1.45;
  color: var(--d-muted);
  padding-left: 24px;
  position: relative;
}

.s-status-now li::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 0.35em;
  width: 11px;
  height: 6px;
  border-left: 2px solid var(--d-teal);
  border-bottom: 2px solid var(--d-teal);
  transform: rotate(-45deg);
}

.s-status-next li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2px solid var(--d-warm);
}

/* ── App icon grid ─────────────────────────────────────── */

.s-apps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px 16px;
  margin-top: 40px;
}

.s-apps figure { margin: 0; text-align: center; }

.s-apps img {
  width: 76px;
  height: 76px;
  display: block;
  margin: 0 auto 12px;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.55));
}

.s-apps figcaption {
  font-size: 14px;
  font-weight: 600;
  color: var(--d-text);
}

.s-apps small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--d-dim);
  margin-top: 3px;
  line-height: 1.35;
}

/* ── Wallpaper strip ───────────────────────────────────── */

.s-walls {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 40px;
}

.s-walls img {
  width: 100%;
  height: 128px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--d-line);
  display: block;
}

/* ── Pricing / model ───────────────────────────────────── */

.s-price {
  border: 1px solid var(--d-line);
  border-radius: 18px;
  padding: 28px 26px;
  background: rgba(255, 255, 255, 0.02);
}

.s-price-hero { border-color: rgba(76, 141, 255, 0.45); background: linear-gradient(180deg, rgba(76, 141, 255, 0.1), rgba(255, 255, 255, 0.015)); }

.s-price h3 { font-size: 17px; font-weight: 650; margin: 0 0 8px; }

.s-price b {
  display: block;
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -0.035em;
  margin: 10px 0 10px;
  background: var(--d-silver);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.s-price p { font-size: 14px; line-height: 1.55; color: var(--d-muted); margin: 0; }

/* ── Media ─────────────────────────────────────────────── */

.s-media img {
  width: 100%;
  border-radius: 18px;
  border: 1px solid var(--d-line);
  display: block;
}

.s-mock {
  border-radius: 18px;
  border: 1px solid var(--d-line-strong);
  background: linear-gradient(180deg, #0d1018, #080a10);
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6);
}

.s-mock-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--d-line);
  background: rgba(255, 255, 255, 0.025);
}

.s-mock-bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
}

.s-mock-bar span {
  margin-left: 10px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--d-dim);
}

.s-mock-body { padding: 24px 22px; }
.s-mock-body p { margin: 0 0 12px; font-size: 15px; line-height: 1.55; }
.s-mock-body p:last-child { margin-bottom: 0; }

.s-mock-you { color: var(--d-text); font-weight: 500; padding-bottom: 14px; border-bottom: 1px solid var(--d-line); }

.s-mock-tool {
  font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  font-size: 13px;
  color: var(--d-teal);
  padding-left: 18px;
  position: relative;
}

.s-mock-tool::before { content: "▸"; position: absolute; left: 0; color: var(--d-dim); }

.s-mock-say {
  margin-top: 16px !important;
  padding-top: 14px;
  border-top: 1px solid var(--d-line);
  color: var(--d-blue);
  font-style: italic;
}

/* ── Roadmap ───────────────────────────────────────────── */

.s-road {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 44px;
  position: relative;
}

.s-road::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 6px;
  right: 6px;
  height: 2px;
  background: var(--d-arc);
  opacity: 0.55;
}

.s-road div { position: relative; padding-top: 34px; }

.s-road div::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--d-black);
  border: 3px solid var(--d-blue);
}

.s-road b {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--d-blue);
  margin-bottom: 9px;
}

.s-road p { margin: 0; font-size: 15px; line-height: 1.5; color: var(--d-muted); }

/* ── Closing slide ─────────────────────────────────────── */

.slide-end { text-align: center; align-items: center; }

.s-contact {
  display: flex;
  gap: 44px;
  justify-content: center;
  margin-top: 44px;
  font-size: 17px;
  color: var(--d-muted);
}

.s-contact b { display: block; font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--d-dim); margin-bottom: 7px; font-weight: 600; }

/* ── Chrome ────────────────────────────────────────────── */

.deck-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--d-arc);
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 20;
}

.deck-nav {
  position: fixed;
  bottom: 22px;
  right: 26px;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 20;
  font-size: 13px;
  color: var(--d-dim);
}

.deck-nav button {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--d-line-strong);
  background: rgba(255, 255, 255, 0.04);
  color: var(--d-text);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s ease, opacity 0.2s ease;
}

.deck-nav button:hover { background: rgba(255, 255, 255, 0.12); }
.deck-nav button:disabled { opacity: 0.3; cursor: default; }

.deck-count { min-width: 58px; text-align: center; font-variant-numeric: tabular-nums; }

.deck-home {
  position: fixed;
  bottom: 22px;
  left: 26px;
  z-index: 20;
  font-size: 13px;
  color: var(--d-dim);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.deck-home:hover { color: var(--d-text); }
.deck-home img { width: 20px; height: 20px; }

.deck-hint {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--d-dim);
  transition: opacity 0.6s ease;
}

.deck-hint.is-gone { opacity: 0; pointer-events: none; }

kbd {
  font-family: var(--d-font);
  font-size: 11px;
  padding: 2px 6px;
  border: 1px solid var(--d-line-strong);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--d-muted);
}

/* ── Print / PDF export ────────────────────────────────── */

@page { size: 1280px 720px; margin: 0; }

@media print {
  html, body { overflow: visible; height: auto; background: #05060a; }

  .deck { position: static; display: block; }

  .deck-stage {
    position: static;
    width: auto;
    height: auto;
    transform: none !important;
  }

  .slide {
    position: relative;
    inset: auto;
    width: 1280px;
    height: 720px;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    transition: none !important;
    break-after: page;
    page-break-after: always;
    background: #05060a;
  }

  .slide:last-child { break-after: auto; page-break-after: auto; }

  .deck-nav, .deck-home, .deck-hint, .deck-progress { display: none !important; }
}