/**
 * OpenTerms Homepage
 * Section-specific styles for index.html
 * (styles.css provides base, nav, footer, buttons)
 */

/* ── Homepage: Problem Section ─────────────────────────────── */
.problem-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}
.problem-anchor {
  font-family: var(--serif);
  font-size: 1.125rem;
  font-style: italic;
  color: var(--muted);
  line-height: 1.7;
  max-width: 640px;
  margin-bottom: 56px;
}
.failures-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
}
.failures-list li {
  background: var(--paper);
  padding: 32px 28px;
}
.failure-label {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}
.failure-list-item h3 {
  font-family: var(--sans);
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--ink);
}
.failure-list-item p {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── Homepage: How It Works ───────────────────────────────── */
.how-it-works-new {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}
.how-it-works-new h2 {
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 40px;
}
.how-two-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  margin-bottom: 56px;
}
.how-step {
  padding: 28px 28px 28px 0;
}
.step-num-tag {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.how-step h3 {
  font-family: var(--sans);
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--ink);
}
.how-step p {
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.6;
}
.deterministic-note {
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 560px;
  padding: 20px 24px;
  border-left: 3px solid var(--accent);
  background: var(--surface);
  margin-bottom: 48px;
}
.deterministic-note strong { color: var(--ink); }
.sample-schema-block {
  background: var(--ink);
  padding: 40px;
}
.sample-schema-label {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}
.sample-schema-label span { color: var(--accent); }
.sample-schema-code {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: #d4d0c8;
  line-height: 1.8;
  white-space: pre;
  overflow-x: auto;
}
.sample-schema-code .key { color: #9ec9f3; }
.sample-schema-code .str { color: #a8d9a8; }
.sample-schema-code .num { color: #f0c090; }

/* ── Homepage: Architecture Story ─────────────────────────── */
.architecture-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}
.architecture-section > p {
  font-family: var(--serif);
  font-size: 1.125rem;
  font-style: italic;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 40px;
}
.arch-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 48px;
}
.arch-card {
  background: var(--paper);
  padding: 40px 32px;
}
.arch-card.arch-card--hero {
  background: var(--ink);
}
.arch-num {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.arch-card--hero .arch-num { color: var(--accent); }
.arch-card h3 {
  font-family: var(--sans);
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ink);
}
.arch-card--hero h3 { color: var(--paper); }
.arch-card p {
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.6;
}
.arch-card--hero p { color: #9e9a95; }
.arch-audience-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 4px 10px;
  border: 1px solid var(--border);
  letter-spacing: 0.04em;
  color: var(--ink);
  margin-top: 20px;
}
.arch-card--hero .arch-audience-tag {
  border-color: #3a3a42;
  color: #9e9a95;
}
.arch-status-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 4px 10px;
  border: 1px solid var(--border);
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-top: 8px;
}
.arch-card--hero .arch-status-tag {
  border-color: #3a3a42;
  color: #6b6560;
}
.arch-card--secondary { opacity: 0.8; }
.arch-card--secondary:hover { opacity: 1; }
.three-record-line {
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 560px;
}

/* ── Homepage: Standards Proof ─────────────────────────────── */
.standards-proof {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}
.standards-proof p {
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.7;
  max-width: 640px;
  margin-bottom: 28px;
}
.standards-proof .spec-tags { margin-bottom: 28px; }

/* ── Homepage: CTA ─────────────────────────────────── */
.cta-section {
  padding-bottom: 96px;
}
.cta-section h2 {
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.cta-section p {
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 32px;
}
.cta-links {
  display: flex;
  gap: 16px;
}
.cta-primary {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 12px 24px;
  background: var(--ink);
  color: var(--paper);
  transition: background 0.15s;
  text-decoration: none;
}
.cta-primary:hover { background: var(--accent); }
.cta-secondary {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 12px 24px;
  border: 1px solid var(--border);
  color: var(--ink);
  transition: border-color 0.15s, background 0.15s;
  text-decoration: none;
}
.cta-secondary:hover { background: var(--surface); }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .failures-list,
  .how-two-steps,
  .arch-grid {
    grid-template-columns: 1fr;
  }
  .cta-links { flex-wrap: wrap; }
}