/* ==========================================================================
   Practically Applied AI — site styles
   Built on brand/tokens.css (values inlined here so the site is fully static
   and deployable as a single folder; edit tokens in brand/ first, then sync).
   ========================================================================== */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Cormorant+Garamond:ital,wght@1,500&display=swap");

:root {
  --ai-ink: #111111; --ai-charcoal: #2E2E2E; --ai-slate: #6B6864;
  --ai-stone: #8A857F; --ai-taupe: #CFC8BF; --ai-sand: #DDD6CC;
  --ai-linen: #E7E1D9; --ai-parchment: #F5F2ED; --ai-paper: #FBFAF8;
  --ai-white: #FFFFFF;
  --ai-ember: #C25812; --ai-ember-deep: #9A420C; --ai-ember-tint: #F3E4D6;
  --ai-evergreen: #3F4A3B; --ai-brick: #8C3B2E;
  --ai-bg: var(--ai-parchment); --ai-surface: var(--ai-paper);
  --ai-text: var(--ai-charcoal); --ai-text-strong: var(--ai-ink);
  --ai-text-muted: var(--ai-slate); --ai-text-faint: #6F6A65; /* darker than stone for 4.5:1 contrast on parchment */
  --ai-border: var(--ai-taupe); --ai-link: var(--ai-ember-deep);
  --ai-accent: var(--ai-ember);
  --ai-font-sans: "Inter", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --ai-font-serif: "Cormorant Garamond", Georgia, serif;
  --ai-radius: 3px;
  --ai-rule: 1px solid var(--ai-taupe);
  --ai-container: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ai-bg);
  color: var(--ai-text);
  font-family: var(--ai-font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- Type ---- */
h1, h2, h3 {
  color: var(--ai-text-strong);
  line-height: 1.15;
  margin: 0 0 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.display { font-size: clamp(2.5rem, 6vw, 3.75rem); line-height: 1.05; font-weight: 700; }
h1 { font-size: clamp(2rem, 4.5vw, 2.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 1.875rem); }
h3 { font-size: 1.375rem; }
p { margin: 0 0 1rem; max-width: 68ch; }
.lead { font-size: 1.3125rem; line-height: 1.5; }
.small { font-size: 0.90625rem; }
.muted { color: var(--ai-text-muted); }

/* Serif brand moment — pull quotes, kickers. 18px minimum. */
.moment {
  font-family: var(--ai-font-serif);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  line-height: 1.35;
  color: var(--ai-text-strong);
}

/* Letterspaced caps label — inherited signature */
.label {
  font-size: 0.78125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--ai-text-faint);
}

/* The ember tick — Applied AI signature device */
.eyebrow { display: block; margin-bottom: 1.5rem; }
.eyebrow::after {
  content: "";
  display: block;
  width: 36px; height: 2px;
  background: var(--ai-ember);
  margin-top: 0.75rem;
}
.eyebrow.centered { text-align: center; }
.eyebrow.centered::after { margin-left: auto; margin-right: auto; }

a { color: var(--ai-link); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--ai-text-strong); }

/* ---- Layout ---- */
.container { max-width: var(--ai-container); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 6rem 0; }
.section.tight { padding: 4rem 0; }
@media (max-width: 720px) { .section { padding: 4rem 0; } }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
@media (max-width: 860px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

/* ---- Dark sections ---- */
.dark {
  --ai-bg: var(--ai-ink); --ai-surface: #1A1A19;
  --ai-text: var(--ai-parchment); --ai-text-strong: var(--ai-paper);
  --ai-text-muted: var(--ai-taupe); --ai-text-faint: var(--ai-stone);
  --ai-border: rgba(207, 200, 191, 0.3);
  --ai-link: #E8935B; --ai-accent: #D96A1E;
  background: var(--ai-bg);
  color: var(--ai-text);
}
.dark h1, .dark h2, .dark h3, .dark .moment { color: var(--ai-text-strong); }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  font-family: var(--ai-font-sans);
  font-size: 0.78125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  text-decoration: none;
  padding: 1em 2.2em;
  border-radius: var(--ai-radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn-primary { background: var(--ai-ember-deep); color: #FFFFFF; }
.btn-primary:hover { background: var(--ai-ink); color: var(--ai-parchment); }
.btn-secondary { background: transparent; color: var(--ai-ink); border-color: var(--ai-ink); }
.btn-secondary:hover { background: var(--ai-ink); color: var(--ai-parchment); }
.dark .btn-primary { background: var(--ai-ember); color: #FFFFFF; }
.dark .btn-primary:hover { background: var(--ai-parchment); color: var(--ai-ink); }
.dark .btn-secondary { color: var(--ai-parchment); border-color: var(--ai-parchment); }
.dark .btn-secondary:hover { background: var(--ai-parchment); color: var(--ai-ink); }
.btn:focus-visible { outline: 2px solid var(--ai-ember-deep); outline-offset: 2px; }

/* ---- Nav ---- */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 0;
  border-bottom: var(--ai-rule);
}
.nav-brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; }
.nav-brand img { height: 34px; }
.nav-brand .wordmark { line-height: 1.15; }
.nav-brand .wordmark .name {
  display: block;
  font-size: 1.2rem; font-weight: 700; letter-spacing: -0.015em;
  color: var(--ai-text-strong);
}
.nav-brand .wordmark .bytjc {
  display: block;
  font-size: 0.66rem; font-weight: 500; letter-spacing: 0.22em;
  color: var(--ai-text-faint); text-transform: uppercase;
  margin-top: 1px;
}
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a {
  font-size: 0.90625rem; font-weight: 500;
  color: var(--ai-text); text-decoration: none;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ai-ember-deep); }
.nav-links .btn { padding: 0.8em 1.6em; white-space: nowrap; }
.nav-links .btn-primary, .nav-links .btn-primary:hover { color: #FFFFFF; }
.nav-menu a { white-space: nowrap; }
.nav { position: relative; }
.nav-menu { display: flex; align-items: center; gap: 2rem; }
.nav-toggle {
  display: none;
  flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; padding: 0 11px;
  background: transparent; border: 1px solid var(--ai-border); border-radius: var(--ai-radius);
  cursor: pointer;
}
.nav-toggle span {
  display: block; height: 2px; background: var(--ai-text-strong);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle:focus-visible { outline: 2px solid var(--ai-ember-deep); outline-offset: 2px; }
.nav.open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (max-width: 900px) {
  .nav-links { gap: 0.75rem; }
  .nav-toggle { display: flex; }
  .nav-menu {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0; z-index: 20;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--ai-surface);
    border: var(--ai-rule); border-top: none;
    box-shadow: 0 12px 24px rgba(17, 17, 17, 0.08);
  }
  .nav.open .nav-menu { display: flex; }
  .nav-menu a { padding: 1rem 1.25rem; border-bottom: var(--ai-rule); font-size: 1rem; }
  .nav-menu a:last-child { border-bottom: none; }
}
@media (max-width: 420px) {
  .nav-brand .wordmark .name { font-size: 1rem; }
  .nav-links .btn { padding: 0.75em 1em; letter-spacing: 0.12em; }
}

/* ---- Hero ---- */
.hero { padding: 7rem 0 5rem; }
.hero .kicker { margin: 1.5rem 0 0; }
.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 2.5rem; }
.hero .display { max-width: 17ch; }
.hero .lead { max-width: 56ch; margin-top: 1.5rem; }
.hero .display em {
  font-style: normal;
  color: var(--ai-ember-deep);
}
@media (max-width: 720px) { .hero { padding: 4rem 0 3rem; } }

/* Stat strip */
.stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
  border-top: var(--ai-rule);
  margin-top: 4.5rem; padding-top: 2.5rem;
}
.stat .num {
  font-size: 2.25rem; font-weight: 700; letter-spacing: -0.02em;
  color: var(--ai-text-strong);
  font-variant-numeric: tabular-nums;
}
.stat .num.ember { color: var(--ai-ember); }
.dark .stat .num.ember { color: #E8935B; }
.stat .label { display: block; margin-top: 0.35rem; letter-spacing: 0.2em; }
@media (max-width: 720px) { .stats { grid-template-columns: 1fr; gap: 2rem; } }

/* ---- Cards ---- */
.card {
  background: var(--ai-surface);
  border: var(--ai-rule);
  border-radius: var(--ai-radius);
  padding: 2rem;
}
.card h3 { margin-top: 0.75rem; }
.card .label { letter-spacing: 0.2em; }
.card p { max-width: none; margin-bottom: 0; }
.card.highlight { background: var(--ai-ember-tint); border-color: transparent; }
.dark .card { background: var(--ai-surface); border-color: var(--ai-border); }

/* Numbered step cards */
.step-num {
  font-size: 2.25rem; font-weight: 700; color: var(--ai-ember);
  letter-spacing: -0.02em; line-height: 1;
}

/* ---- Quote block ---- */
.quote { text-align: center; max-width: 44ch; margin: 0 auto; }
.quote .moment { display: block; margin-bottom: 1.5rem; }
.quote .label { letter-spacing: 0.2em; }

/* ---- Demo tiles ---- */
.demo-tile {
  background: var(--ai-surface);
  border: var(--ai-rule);
  border-radius: var(--ai-radius);
  overflow: hidden;
  display: flex; flex-direction: column;
}
.demo-tile .demo-visual {
  background: var(--ai-ink);
  color: var(--ai-parchment);
  aspect-ratio: 16/8.5;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 0.6rem;
}
.demo-tile .demo-visual .label { color: var(--ai-stone); }
.demo-tile .demo-body { padding: 1.75rem 2rem 2rem; }
.demo-tile .demo-body p { max-width: none; }
.demo-tag {
  display: inline-block;
  font-size: 0.70rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.18em;
  padding: 0.35em 0.9em;
  border-radius: var(--ai-radius);
  background: var(--ai-ember-tint); color: var(--ai-ember-deep);
}
.demo-tag.soon { background: var(--ai-linen); color: var(--ai-slate); }

/* ---- Footer ---- */
footer {
  border-top: var(--ai-rule);
  padding: 3rem 0;
}
.footer-inner {
  display: flex; flex-direction: column; align-items: center;
  gap: 0.6rem; text-align: center;
}
footer .label { letter-spacing: 0.2em; }
footer a.label { text-decoration: none; }
footer a.label:hover { color: var(--ai-ember-deep); }

/* ---- Forms (contact) ---- */
.field { margin-bottom: 1.25rem; }
.field label {
  display: block; font-size: 0.90625rem; font-weight: 600;
  margin-bottom: 0.4rem; color: var(--ai-text-strong);
}
.field input, .field textarea, .field select {
  width: 100%;
  font-family: var(--ai-font-sans); font-size: 1rem;
  color: var(--ai-text);
  background: var(--ai-surface);
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius);
  padding: 0.7em 0.9em;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 2px solid var(--ai-ember-deep); outline-offset: 1px; border-color: transparent;
}

/* ---- Forms: choice cards (radio options) ---- */
.choice-group { border: none; margin: 0 0 1.5rem; padding: 0; }
.choice-group legend {
  font-size: 0.90625rem; font-weight: 600; color: var(--ai-text-strong);
  margin-bottom: 0.6rem; padding: 0;
}
.choice {
  display: flex; gap: 0.75rem; align-items: flex-start;
  padding: 0.9rem 1rem; margin-bottom: 0.6rem;
  background: var(--ai-surface);
  border: 1px solid var(--ai-border); border-radius: var(--ai-radius);
  cursor: pointer;
}
.choice:has(input:checked) { border-color: var(--ai-ember-deep); box-shadow: inset 0 0 0 1px var(--ai-ember-deep); }
.choice input { margin-top: 0.3rem; accent-color: var(--ai-ember-deep); }
.choice strong { display: block; color: var(--ai-text-strong); font-weight: 600; }
.choice .small { display: block; margin-top: 0.15rem; }
.field [aria-invalid="true"] { border-color: var(--ai-brick); outline: 1px solid var(--ai-brick); }
.product-group { border: none; margin: 0; padding: 0; }
.product-group legend {
  font-size: 0.78125rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--ai-ember-deep); margin: 0.5rem 0 0.75rem; padding: 0;
}
.back-link { color: inherit; text-decoration: none; }
.back-link:hover { color: var(--ai-ember-deep); }
.feature h2, .feature .lead { max-width: 64ch; }
a.card-link { display: block; text-decoration: none; color: inherit; transition: border-color 0.15s ease, transform 0.15s ease; }
a.card-link h3 { color: var(--ai-text-strong); }
a.card-link:hover { border-color: var(--ai-ember-deep); transform: translateY(-2px); }
a.card-link:hover h3 { color: var(--ai-ember-deep); }
a.card-link:focus-visible { outline: 2px solid var(--ai-ember-deep); outline-offset: 2px; }

/* ---- Before/after house viewer ---- */
.house-viewer { margin: 3rem 0 0; max-width: 880px; }
.hv-frame { position: relative; border-radius: var(--ai-radius); overflow: hidden; background: var(--ai-sand); }
.hv-frame img { display: block; width: 100%; height: auto; transition: opacity 0.2s ease, filter 0.2s ease; }
.hv-frame img.hv-dim { filter: grayscale(0.6) brightness(0.85); }
.hv-soon {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  background: var(--ai-ink); color: var(--ai-parchment);
  font-size: 0.78125rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.2em;
  padding: 0.8em 1.4em; border-radius: var(--ai-radius);
}
.hv-bar {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap;
  padding: 0.85rem 0 0;
}
.hv-caption { font-weight: 600; color: var(--ai-text-strong); }
.hv-note { font-size: 0.8125rem; color: var(--ai-text-faint); }
.hv-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.hv-tab {
  font-family: var(--ai-font-sans); font-size: 0.875rem; font-weight: 500;
  color: var(--ai-text); background: var(--ai-surface);
  border: 1px solid var(--ai-border); border-radius: var(--ai-radius);
  padding: 0.6em 1.1em; cursor: pointer; min-height: 44px;
}
.hv-tab:hover { border-color: var(--ai-ember-deep); color: var(--ai-ember-deep); }
.hv-tab[aria-pressed="true"] { background: var(--ai-ink); border-color: var(--ai-ink); color: var(--ai-parchment); }
.hv-tab:focus-visible { outline: 2px solid var(--ai-ember-deep); outline-offset: 2px; }

/* ---- Policy pages ---- */
.policy .container { max-width: 760px; }
.policy h2 { font-size: 1.4rem; margin: 2.5rem 0 0.75rem; }
.policy h2:first-child { margin-top: 0; }
.policy p, .policy li { max-width: 68ch; }
.policy ul { padding-left: 1.25rem; margin: 0 0 1rem; }
.policy li { margin-bottom: 0.5rem; }
.nowrap { white-space: nowrap; }
@media (max-width: 400px) { .nowrap { white-space: normal; } }

/* Space between a status tag and the heading under it (Solutions tiles, cards). */
.demo-tag + h3 { margin-top: 0.75rem; }

/* ---- FAQ ---- */
.faq { row-gap: 2rem; }
.faq h3 { font-size: 1.1rem; margin: 0 0 0.4rem; }

/* ---- Respect reduced-motion preferences ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}