/* ------------------------------------------------------------------
   Tokens - "Signal"
------------------------------------------------------------------- */
:root {
  color-scheme: dark;

  --bg: #0d0d0f;
  --surface: #16161a;
  --surface-2: #1f1f25;
  --text: #ffffff;
  --muted: #8e8e96;
  --border: #2a2a31;

  --accent-companies: #c8f751;
  --accent-schools: #7cc4ff;
  /* Default track accent; track pages override --track. */
  --track: var(--accent-companies);
  --on-track: #0d0d0f;
  --err: #ff8577;

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --fs-hero: clamp(2.6rem, 8vw, 5.5rem);
  --fs-h2: clamp(1.6rem, 3.5vw, 2.4rem);
  --fs-body: 1.05rem;

  --maxw: 68rem;
  /* Width only - the color must come from var(--track) at the point of
     use, not baked in here, or descendants that override --track (see
     .track-schools below) inherit the already-resolved root color. */
  --focus-ring-width: 3px;
}

.track-schools { --track: var(--accent-schools); }
.track-companies { --track: var(--accent-companies); }

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }

/* Skip link - visible on focus */
.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  background: var(--track);
  color: var(--on-track);
  padding: 0.75rem 1rem;
  font-weight: 800;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: var(--focus-ring-width) solid var(--track);
  outline-offset: 2px;
}

/* Site navigation */
.site-nav {
  border-bottom: 1px solid var(--border);
}

.site-nav-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.5rem;
  padding: 1.1rem 1.5rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-nav a:hover {
  color: var(--text);
}

.site-nav a[aria-current="page"] {
  color: var(--track);
}

/* Display type */
h1, h2, h3 { letter-spacing: -0.04em; line-height: 0.95; margin: 0; }

h1 {
  font-size: var(--fs-hero);
  font-weight: 900;
  text-transform: uppercase;
}
h2 { font-size: var(--fs-h2); font-weight: 900; text-transform: uppercase; }

.eyebrow {
  display: inline-block;
  background: var(--track);
  color: var(--on-track);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.35rem 0.6rem;
}

.lede { color: var(--muted); max-width: 34rem; margin-top: 1.25rem; }

.accent { color: var(--track); }

/* Track split */
.tracks { display: grid; gap: 1rem; grid-template-columns: 1fr; margin: 3rem 0; }
@media (min-width: 45rem) {
  .tracks { grid-template-columns: 1fr 1fr; }
}

.track-card {
  display: block;
  padding: 1.75rem;
  text-decoration: none;
  background: var(--track);
  color: var(--on-track);
}
.track-card h2 { color: var(--on-track); }
.track-card p { color: rgba(13, 13, 15, 0.72); margin: 0.75rem 0 0; font-weight: 600; }

/* Cards / rows */
.row {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
}
.row h3 { font-size: 1.25rem; font-weight: 800; text-transform: uppercase; }
.row p { color: var(--muted); margin: 0.5rem 0 0; }

.talks { list-style: none; margin: 0; padding: 0; }
.talks li.row { list-style: none; }

.partner-heading { margin-top: 3rem; }

.partner-list { list-style: none; margin: 1rem 0 0; padding: 0; color: var(--muted); }
.partner-list li { padding: 0.35rem 0; }

.empty-state { color: var(--muted); border: 1px dashed var(--border); padding: 1.5rem; }

footer { border-top: 1px solid var(--border); margin-top: 5rem; padding: 2rem 0; color: var(--muted); }

.hero { padding: 5rem 0 2rem; }

.track-card .cta {
  margin-top: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.8rem;
  color: var(--on-track);
}

.shape {
  color: var(--track) !important;
  font-weight: 700;
  font-size: 0.9rem;
}

.cta-band { border-top: 1px solid var(--border); margin-top: 4rem; padding-top: 3rem; }

.btn {
  display: inline-block;
  margin-top: 1.5rem;
  background: var(--track);
  color: var(--on-track);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  padding: 1rem 1.75rem;
}
.btn:hover { opacity: 0.88; }

blockquote { margin: 0; font-size: 1.15rem; }
figcaption { color: var(--muted); margin-top: 0.75rem; font-size: 0.9rem; }

.inquiry { margin-top: 2rem; max-width: 38rem; }

.form-row { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.1rem; }

.form-row label {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.form-row input,
.form-row select,
.form-row textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font: inherit;
  padding: 0.75rem;
  width: 100%;
}

.hp { position: absolute; left: -9999px; }

.form-actions { display: flex; align-items: center; gap: 1rem; margin-top: 1.5rem; }
.form-actions .btn { margin-top: 0; border: 0; cursor: pointer; }

.form-status { font-size: 0.9rem; }
.form-status.err { color: var(--err); }
.form-status.ok { color: var(--track); }

.form-actions .btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}