/* Timed Trading event artifacts — shared visual system */
:root {
  --bg: #f4f6f8;
  --bg-elevated: #ffffff;
  --bg-muted: #e8eef3;
  --ink: #15202b;
  --ink-muted: #4a5d70;
  --ink-faint: #6b7c8c;
  --accent: #0d6b4c;
  --accent-soft: #d8efe6;
  --accent-ink: #085239;
  --border: #c9d4de;
  --border-strong: #9aadb8;
  --warn-bg: #f7f0e4;
  --warn-ink: #6a4e1a;
  --code-bg: #eef2f6;
  --nav-h: 3.25rem;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(21, 32, 43, 0.06), 0 8px 24px rgba(21, 32, 43, 0.06);
  --font: "IBM Plex Sans", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-display: "IBM Plex Sans", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --max: 52rem;
  --max-wide: 72rem;
  --space: clamp(1rem, 3vw, 1.75rem);
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #d9ebe3 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #dce6f0 0%, transparent 50%),
    var(--bg);
  min-height: 100vh;
}

body.theme-pitch {
  --bg: #0f1419;
  --bg-elevated: #1a2332;
  --bg-muted: #15202c;
  --ink: #e8eef6;
  --ink-muted: #b0bec9;
  --ink-faint: #8494a6;
  --accent: #4a9f7a;
  --accent-soft: #1e3a2f;
  --accent-ink: #9ed9bf;
  --border: #3d4f66;
  --border-strong: #5a6f88;
  --warn-bg: #2a2418;
  --warn-ink: #e0c88a;
  --code-bg: #121a24;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
  background:
    radial-gradient(900px 500px at 0% 0%, #1a2f28 0%, transparent 55%),
    radial-gradient(800px 480px at 100% 10%, #1a2436 0%, transparent 50%),
    var(--bg);
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent-ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--accent);
}

/* Sticky top nav */
.topnav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 var(--space);
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.topnav a.brand {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.topnav a.brand:hover {
  color: var(--accent);
}

.topnav .nav-links {
  display: flex;
  gap: 0.35rem;
  margin-left: auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.topnav .nav-links::-webkit-scrollbar {
  display: none;
}

.topnav .nav-links a {
  flex: 0 0 auto;
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-muted);
  text-decoration: none;
  border: 1px solid transparent;
}

.topnav .nav-links a:hover,
.topnav .nav-links a[aria-current="page"] {
  color: var(--accent-ink);
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
}

.wrap {
  width: min(100% - 2 * var(--space), var(--max));
  margin-inline: auto;
  padding: 1.5rem 0 4rem;
}

.wrap-wide {
  width: min(100% - 2 * var(--space), var(--max-wide));
  margin-inline: auto;
  padding: 1.5rem 0 4rem;
}

/* Typography */
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 1.6em 0 0.55em;
  color: var(--ink);
}

h1 {
  font-size: clamp(1.65rem, 4.5vw, 2.25rem);
  margin-top: 0.4em;
}

h2 {
  font-size: clamp(1.25rem, 3vw, 1.55rem);
  padding-top: 0.4rem;
  border-top: 1px solid var(--border);
}

h3 {
  font-size: 1.1rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--ink-muted);
  max-width: 40rem;
}

.meta {
  font-size: 0.9rem;
  color: var(--ink-faint);
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

p,
ul,
ol {
  margin: 0.65em 0;
}

ul,
ol {
  padding-left: 1.25rem;
}

li {
  margin: 0.3em 0;
}

li > ul,
li > ol {
  margin: 0.2em 0;
}

strong {
  font-weight: 650;
}

code,
kbd {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.08em 0.35em;
}

pre {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.45;
  margin: 1rem 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

.note,
.callout {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  margin: 1rem 0;
  box-shadow: var(--shadow);
}

.callout.warn {
  border-left-color: var(--warn-ink);
  background: var(--warn-bg);
  color: var(--warn-ink);
}

/* Tables — intentional horizontal scroll on narrow screens */
.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1rem 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 28rem;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--bg-muted);
  font-weight: 700;
  white-space: nowrap;
  position: sticky;
  top: 0;
}

tr:last-child td {
  border-bottom: none;
}

tr:nth-child(even) td {
  background: color-mix(in srgb, var(--bg-muted) 45%, transparent);
}

td code {
  white-space: nowrap;
}

/* Checklist */
.checklist {
  list-style: none;
  padding-left: 0;
}

.checklist li {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  padding: 0.35rem 0;
}

.checklist li::before {
  content: "";
  flex: 0 0 1.1rem;
  height: 1.1rem;
  margin-top: 0.2rem;
  border: 2px solid var(--border-strong);
  border-radius: 3px;
  background: var(--bg-elevated);
}

/* Hub cards */
.hub-hero {
  padding: 1.5rem 0 0.5rem;
}

.hub-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .hub-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.hub-card {
  display: block;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.hub-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  color: inherit;
}

.hub-card h2 {
  border: none;
  margin: 0.2em 0 0.4em;
  font-size: 1.2rem;
  padding: 0;
}

.hub-card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.hub-card .tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.arch-frame {
  margin: 1.25rem 0;
  padding: 0.75rem;
  background: #0f1419;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: auto;
}

.arch-frame img,
.arch-frame object,
.arch-frame svg {
  width: 100%;
  max-width: 100%;
  height: auto;
}

.toc {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin: 1.25rem 0;
}

.toc ol {
  margin: 0.4rem 0 0;
}

.footer-note {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--ink-faint);
}

/* Pitch slides */
.pitch-shell {
  padding: 0;
  width: 100%;
}

.pitch-controls {
  position: sticky;
  top: var(--nav-h);
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem var(--space);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.pitch-controls button {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--ink);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 650;
  padding: 0.45rem 0.8rem;
  border-radius: 8px;
  min-height: 2.5rem;
  min-width: 2.75rem;
  cursor: pointer;
  touch-action: manipulation;
}

.pitch-controls button:hover {
  border-color: var(--accent);
  color: var(--accent-ink);
}

.pitch-controls .progress {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

.slides {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  height: calc(100dvh - var(--nav-h) - 3.1rem);
  gap: 0;
}

.slide {
  flex: 0 0 100%;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  overflow-y: auto;
  padding: clamp(1rem, 3vw, 2rem) var(--space) 3rem;
}

.slide-inner {
  width: min(100%, 48rem);
  margin-inline: auto;
}

.slide h1 {
  font-size: clamp(1.7rem, 5vw, 2.5rem);
}

.slide .tagline {
  font-size: clamp(1.15rem, 3vw, 1.45rem);
  color: var(--accent-ink);
  font-weight: 650;
  margin: 0.4em 0 0.8em;
}

.speaker-notes {
  margin-top: 1.5rem;
  padding: 0.85rem 1rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg-muted);
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.speaker-notes strong {
  color: var(--ink-faint);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.35rem;
}

.placeholder {
  color: var(--warn-ink);
  background: var(--warn-bg);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.88em;
}

@media (max-width: 480px) {
  body {
    font-size: 1rem;
  }

  table {
    font-size: 0.82rem;
    min-width: 22rem;
  }

  th,
  td {
    padding: 0.5rem 0.55rem;
  }
}

@media print {
  .topnav,
  .pitch-controls {
    position: static;
  }

  .slides {
    display: block;
    height: auto;
    overflow: visible;
  }

  .slide {
    break-after: page;
    overflow: visible;
  }
}