/* ============================================================
   Components — restraint first.
   Every component pulls from tokens. No magic numbers.
   ============================================================ */

/* ============================================================
   Nav
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--canvas) 92%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}
.nav.scrolled { border-bottom-color: var(--hairline-ink); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-default);
  gap: var(--space-loose);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-3);
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand .mark {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-2px);
}
.brand .sub {
  font-family: var(--font-body);
  font-size: var(--step-0);
  color: var(--ink-muted);
  font-weight: 400;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  gap: var(--space-loose);
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-size: var(--step-1);
  color: var(--ink);
  opacity: 0.78;
  transition: opacity var(--dur) var(--ease);
}
.nav-links a:hover,
.nav-links a[aria-current="page"] { opacity: 1; }

/* ---------- Mobile nav toggle + drawer ---------- */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
  position: relative;
  z-index: 50;  /* above .nav-menu so X stays clickable when drawer is open */
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block;
  position: absolute;
  left: 10px;
  right: 10px;
  height: 1.5px;
  background: var(--ink);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), top var(--dur) var(--ease);
}
.nav-toggle span:nth-child(1) { top: 17px; }
.nav-toggle span:nth-child(2) { top: 25px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { top: 21px; transform: rotate(-45deg); }

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-inner { gap: var(--space-default); }

  .nav-menu {
    position: fixed;
    inset: 0;
    background: var(--canvas);
    z-index: 40;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: var(--space-airy) var(--space-loose);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
  }
  .nav-menu.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  .nav-menu .nav-links {
    flex-direction: column;
    gap: var(--space-loose);
    align-items: flex-start;
  }
  .nav-menu .nav-links a {
    font-family: var(--font-display);
    font-size: var(--step-5);
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1;
    opacity: 1;
  }
  .nav-menu .nav-links a[aria-current="page"]::after {
    content: "";
    display: block;
    width: 32px;
    height: 2px;
    background: var(--accent);
    margin-top: 8px;
  }
  body.nav-open { overflow: hidden; }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  --btn-bg: var(--accent);
  --btn-fg: var(--accent-ink);
  --btn-border: transparent;

  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--step-1);
  font-weight: 500;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
  white-space: nowrap;
}
.btn .arrow {
  display: inline-block;
  transition: transform var(--dur) var(--ease);
}
.btn:hover { background: var(--accent-hover); }
.btn:hover .arrow { transform: translateX(3px); }
.btn:active { transform: translateY(1px); }

.btn-secondary {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-border: var(--ink);
  padding: 13px 23px;
}
.btn-secondary:hover {
  --btn-bg: var(--ink);
  --btn-fg: var(--canvas);
}

.btn-ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-border: transparent;
  padding: 12px 18px;
}
.btn-ghost:hover { background: color-mix(in srgb, var(--ink) 6%, transparent); }

/* ============================================================
   Eyebrow (see also tokens.css — keeping both in sync)
   ============================================================ */
.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-default);
  margin-bottom: var(--space-airy);
  max-width: 32ch;
}
.section-head.wide { max-width: 48ch; }
.section-head h2 { letter-spacing: var(--track-display); }

/* ============================================================
   Kicker numeral (e.g. 01 / 06)
   ============================================================ */
.kicker-num {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--step-1);
  color: var(--ink-muted);
  font-feature-settings: "tnum";
  letter-spacing: 0.04em;
}

/* ============================================================
   Card — module / curriculum / feature
   ============================================================ */
.card {
  padding: var(--space-loose);
  background: transparent;
  border-top: 1px solid var(--hairline-ink);
  display: flex;
  flex-direction: column;
  gap: var(--space-default);
}
.card:last-child { border-bottom: 1px solid var(--hairline-ink); }

.card .card-lead {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-default);
}
.card h3 {
  font-size: var(--step-3);
  line-height: var(--lh-snug);
  font-weight: 500;
  letter-spacing: -0.01em;
}
.card .meta {
  color: var(--ink-muted);
  font-size: var(--step-0);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
}
.card p { color: var(--ink-muted); max-width: 54ch; margin: 0; }

/* Card grid (curriculum, features) */
.card-list {
  display: grid;
  gap: 0;
  grid-template-columns: 1fr;
}

/* ============================================================
   Pricing card
   ============================================================ */
.price-card {
  padding: var(--space-airy);
  background: color-mix(in srgb, var(--ink) 4%, transparent);
  border-radius: var(--radius-card);
  max-width: 560px;
  display: flex;
  flex-direction: column;
  gap: var(--space-loose);
}
.price {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-6);
  line-height: 1;
  letter-spacing: var(--track-display);
}
.price .per { font-size: var(--step-3); color: var(--ink-muted); margin-left: 4px; }
.price-note { color: var(--ink-muted); font-size: var(--step-1); }

.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-default);
}
.check-list li {
  padding-left: 24px;
  position: relative;
  font-size: var(--step-1);
  max-width: 50ch;
  margin: 0;
}
.check-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-display);
}

/* ============================================================
   Quote / testimonial
   ============================================================ */
.quote {
  padding-block: var(--space-loose);
  border-top: 1px solid var(--hairline-ink);
  max-width: 64ch;
}
.quote-text {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--step-4);
  line-height: var(--lh-snug);
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: var(--space-loose);
  text-wrap: balance;
}
.quote cite {
  font-style: normal;
  font-size: var(--step-0);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* ============================================================
   Stat block
   ============================================================ */
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-loose);
  border-top: 1px solid var(--hairline-ink);
  border-bottom: 1px solid var(--hairline-ink);
  padding-block: var(--space-loose);
}
@media (max-width: 720px) { .stat-row { grid-template-columns: 1fr; gap: var(--space-default); } }

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.stat-num {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-5);
  line-height: 1;
  letter-spacing: var(--track-display);
  font-feature-settings: "tnum";
  color: var(--ink);
}
.stat-label {
  font-size: var(--step-0);
  color: var(--ink-muted);
  letter-spacing: -0.005em;
  max-width: 32ch;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding-top: calc(var(--space-cavern) + var(--space-loose));
  padding-bottom: var(--space-cavern);
  position: relative;
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-loose);
}
.hero h1 {
  font-size: clamp(2.75rem, 6.5vw + 1rem, var(--step-7));
  line-height: 0.98;
  letter-spacing: -0.035em;
  max-width: 16ch;
}
.hero-lead {
  font-size: var(--step-3);
  line-height: 1.3;
  color: var(--ink-muted);
  max-width: 46ch;
  letter-spacing: -0.005em;
}
.hero .row { margin-top: var(--space-default); }

/* Hero with optional photo — AFF uses this */
.hero-with-photo {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-airy);
  align-items: end;
}
@media (max-width: 960px) { .hero-with-photo { grid-template-columns: 1fr; } }

/* ============================================================
   Photo slot — intentional empty state for TBD photography
   ============================================================ */
.photo {
  border-radius: var(--radius-card);
  overflow: hidden;
  background: color-mix(in srgb, var(--ink) 8%, transparent);
  aspect-ratio: 4 / 5;
  position: relative;
}
/* Landscape variant — use when the source photograph is natively landscape
   (editorial wide shots, environmental portraits). Pairs with hero-with-photo. */
.photo--landscape { aspect-ratio: 7 / 4; }
.photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.photo figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: var(--space-default);
  font-size: var(--step--1);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--ink-muted);
  background: linear-gradient(to top, color-mix(in srgb, var(--canvas) 85%, transparent), transparent);
}
.photo-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--space-loose);
  text-align: center;
  color: var(--ink-muted);
  font-size: var(--step-0);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
}
.photo-placeholder::before {
  content: "";
  position: absolute;
  inset: var(--space-default);
  border: 1px dashed var(--hairline-ink);
  border-radius: var(--radius);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  padding-block: var(--space-airy);
  border-top: 1px solid var(--hairline-ink);
  color: var(--ink-muted);
  font-size: var(--step-0);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-loose);
  align-items: start;
}
@media (max-width: 720px) { .footer-inner { grid-template-columns: 1fr; } }

.footer nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-loose);
}
.footer nav a {
  display: inline-block;
  padding: 8px 0;  /* WCAG 2.5.8 — adds 16px tap-target vertical without visual change */
}
.footer nav a:hover { color: var(--ink); }
.footer .legal { font-size: var(--step--1); opacity: 0.8; max-width: 60ch; }
.footer .umbrella {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  color: var(--ink);
}

/* ============================================================
   Form inputs (for enrollment, contact)
   ============================================================ */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field label {
  font-size: var(--step-0);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--ink-muted);
}
.field input,
.field textarea {
  appearance: none;
  background: var(--canvas);
  border: 1px solid var(--hairline-ink);
  padding: 12px 14px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: var(--step-2);
  color: var(--ink);
  transition: border-color var(--dur) var(--ease);
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--focus-ring);
}

/* ============================================================
   Billboard (large typographic moment, used on OTR home)
   ============================================================ */
.billboard {
  padding-block: var(--space-cavern);
  border-top: 1px solid var(--hairline-ink);
  border-bottom: 1px solid var(--hairline-ink);
}
.billboard-text {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 5vw + 1rem, var(--step-6));
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 22ch;
  color: var(--ink);
}
.billboard-text em { color: var(--accent); font-style: italic; font-weight: 400; }

/* ============================================================
   Marquee / ticker (OTR data moment — uses mono font)
   ============================================================ */
.ticker {
  font-family: var(--font-mono);
  font-size: var(--step-0);
  letter-spacing: 0;
  color: var(--ink-muted);
  border-top: 1px solid var(--hairline-ink);
  border-bottom: 1px solid var(--hairline-ink);
  padding-block: 14px;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}
.ticker-track {
  display: inline-flex;
  gap: var(--space-loose);
  animation: ticker-scroll 48s linear infinite;
}
@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.ticker-track span::before { content: "→ "; color: var(--accent); margin-right: 8px; }

/* ============================================================
   Two-column content strip (used on product hubs)
   ============================================================ */
.duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--hairline-ink);
}
.duo > * {
  padding: var(--space-airy) var(--space-loose);
}
.duo > * + * { border-left: 1px solid var(--hairline-ink); }
@media (max-width: 820px) {
  .duo { grid-template-columns: 1fr; }
  .duo > * + * { border-left: 0; border-top: 1px solid var(--hairline-ink); }
}

/* ============================================================
   Badge (rare — used for "NEW", "PILOT")
   ============================================================ */
.badge {
  display: inline-block;
  font-size: var(--step--1);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-sm);
  color: var(--ink);
}