/* ===================================================================
   SoTranscribe page styles
   All references are var(--st-*). Brand tokens live ONLY in the
   <style>:root block at the top of /sotranscribe.html.
   Mobile-first responsive.
   =================================================================== */

.st-page {
  background: var(--st-bg);
  color: var(--st-ink);
  font-family: var(--st-body-stack);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
  line-height: 1.55;
  margin: 0;
  padding: 0;
  width: 100%;
}

.st-page * { box-sizing: border-box; }

/* --------- shared section scaffolding --------- */
.st-section {
  padding: 4.5rem 1.25rem;
  border-top: 1px solid var(--st-line);
}
.st-section-soft { background: var(--st-bg-soft); }
.st-section-inner {
  max-width: 920px;
  margin: 0 auto;
}
.st-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.74rem;
  color: var(--st-primary);
  font-weight: 600;
  margin: 0 0 0.6rem;
}
.st-h2 {
  font-size: clamp(1.55rem, 2.5vw + 0.6rem, 2.2rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 1.25rem;
  color: var(--st-ink);
}
.st-lede {
  font-size: 1.08rem;
  color: var(--st-ink-soft);
  margin: 0 0 1.5rem;
  max-width: 60ch;
}
.st-prose p {
  font-size: 1.04rem;
  color: var(--st-ink);
  margin: 0 0 1rem;
  max-width: 64ch;
}
.st-prose strong { color: var(--st-primary-2); }
.st-prose a { color: var(--st-accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.st-prose a:hover { color: var(--st-accent-2); }
.st-aside {
  font-size: 0.95rem;
  color: var(--st-ink-soft);
  margin: 1rem 0 0;
  max-width: 64ch;
}
.st-aside-spaced { margin-top: 2rem; }

/* --------- HERO --------- */
.st-hero {
  padding: 5.5rem 1.25rem 4rem;
  background:
    radial-gradient(60% 80% at 80% 0%, rgba(46,111,126,0.07), transparent 70%),
    radial-gradient(50% 70% at 0% 100%, rgba(92,34,61,0.05), transparent 70%),
    var(--st-bg);
}
.st-hero-inner {
  max-width: 920px;
  margin: 0 auto;
}
.st-logo-row { margin-bottom: 2rem; }
.st-logo {
  height: 36px;
  display: block;
  color: var(--st-primary-2); /* SVG uses currentColor */
}
.st-hero-title {
  font-size: clamp(2rem, 4vw + 0.5rem, 3.4rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin: 0 0 1.25rem;
  color: var(--st-ink);
}
.st-hero-em {
  color: var(--st-accent);
  font-style: normal;
}
.st-hero-sub {
  font-size: 1.18rem;
  color: var(--st-ink-soft);
  max-width: 60ch;
  margin: 0 0 2rem;
  line-height: 1.55;
}
.st-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.st-btn {
  display: inline-block;
  padding: 0.85rem 1.4rem;
  border-radius: var(--st-radius-sm);
  font-size: 0.97rem;
  font-weight: 500;
  letter-spacing: 0.005em;
  text-decoration: none;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}
.st-btn-primary {
  background: var(--st-primary);
  color: var(--st-on-color);
}
.st-btn-primary:hover {
  background: var(--st-primary-2);
  transform: translateY(-1px);
}
.st-btn-ghost {
  background: transparent;
  color: var(--st-ink);
  border-color: var(--st-line);
}
.st-btn-ghost:hover {
  border-color: var(--st-primary);
  color: var(--st-primary);
}
.st-caveat {
  font-size: 0.88rem;
  color: var(--st-ink-soft);
  margin: 0;
}
.st-caveat a { color: var(--st-primary); }

/* --------- KBD pill (cmd+F / ctrl+F) --------- */
.st-kbd {
  display: inline-block;
  padding: 0.18em 0.55em;
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  border-bottom-width: 2px;
  border-radius: 6px;
  font-family: var(--st-mono-stack);
  font-size: 0.78em;
  font-weight: 600;
  color: var(--st-primary-2);
  vertical-align: 0.1em;
}

/* --------- ASCII pipeline --------- */
.st-pipeline {
  font-family: var(--st-mono-stack);
  font-size: 0.78rem;
  line-height: 1.5;
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  border-radius: var(--st-radius);
  padding: 1.5rem;
  overflow-x: auto;
  color: var(--st-ink);
  white-space: pre;
  margin: 0;
}

/* --------- Continuous-mode list --------- */
.st-mode-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
  max-width: 64ch;
}
.st-mode-list li {
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  border-left: 3px solid var(--st-primary);
  border-radius: var(--st-radius-sm);
  padding: 0.85rem 1rem;
  font-size: 0.98rem;
  color: var(--st-ink);
}
.st-mode-list strong { color: var(--st-primary-2); }

/* --------- Two-card / three-card grids --------- */
.st-grid-2 {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .st-grid-2 { grid-template-columns: 1fr 1fr; }
}

.st-grid-3 {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  margin-top: 2rem;
}
@media (min-width: 800px) {
  .st-grid-3 { grid-template-columns: 1fr 1fr 1fr; }
}

.st-card {
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  border-radius: var(--st-radius);
  padding: 1.5rem 1.4rem;
}
.st-card-accent {
  border-color: var(--st-primary);
  border-width: 1.5px;
}
.st-card-title {
  margin: 0 0 0.4rem;
  font-size: 1.18rem;
  font-weight: 600;
  color: var(--st-ink);
  letter-spacing: -0.01em;
}
.st-card-tag {
  font-size: 0.86rem;
  color: var(--st-primary);
  margin: 0 0 1rem;
  font-weight: 500;
}
.st-check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.st-check-list li {
  padding: 0.4rem 0 0.4rem 1.4rem;
  position: relative;
  font-size: 0.97rem;
  color: var(--st-ink);
  border-top: 1px solid var(--st-line);
}
.st-check-list li:first-child { border-top: 0; }
.st-check-list li::before {
  content: "✓";
  position: absolute;
  left: 0.1rem;
  color: var(--st-success);
  font-weight: 600;
}

/* --------- Pricing tiers --------- */
.st-tier {
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  border-radius: var(--st-radius);
  padding: 1.7rem 1.4rem;
  display: flex;
  flex-direction: column;
  position: relative;
}
.st-tier-featured {
  border-color: var(--st-accent);
  border-width: 1.5px;
  box-shadow: 0 4px 18px rgba(92, 34, 61, 0.06);
}
.st-tier-flag {
  position: absolute;
  top: -0.7rem;
  left: 1.4rem;
  background: var(--st-accent);
  color: var(--st-on-color);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.18rem 0.55rem;
  border-radius: 4px;
  margin: 0;
  font-weight: 600;
}
.st-tier-name {
  margin: 0 0 0.6rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--st-ink);
}
.st-tier-price {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--st-primary-2);
  margin: 0 0 1rem;
  font-family: var(--st-mono-stack);
}
.st-tier-desc {
  font-size: 0.95rem;
  color: var(--st-ink-soft);
  margin: 0 0 1.25rem;
  flex-grow: 1;
}
.st-tier-cta {
  display: inline-block;
  color: var(--st-primary);
  font-weight: 500;
  text-decoration: none;
  font-size: 0.95rem;
  border-bottom: 1px solid currentColor;
  align-self: flex-start;
  padding-bottom: 1px;
}
.st-tier-cta:hover {
  color: var(--st-accent);
}
.st-tier-cta-disabled {
  color: var(--st-ink-soft);
  border-bottom-color: transparent;
  font-style: italic;
}
.st-enterprise {
  margin-top: 1.5rem;
  padding: 1rem 1.2rem;
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  border-radius: var(--st-radius-sm);
  font-size: 0.96rem;
  color: var(--st-ink);
}
.st-enterprise strong { color: var(--st-accent); }
.st-enterprise a { color: var(--st-primary); }

/* --------- Cost list --------- */
.st-cost-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: grid;
  gap: 0.75rem;
}
.st-cost-list li {
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  border-radius: var(--st-radius-sm);
  padding: 0.9rem 1.1rem;
  font-size: 0.97rem;
  color: var(--st-ink);
}
.st-cost-list strong { color: var(--st-primary-2); }

/* --------- Lineage chips --------- */
.st-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.st-chip {
  display: inline-block;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  color: var(--st-ink);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
}
.st-chip:hover {
  transform: translateY(-1px);
  border-color: var(--st-primary);
}
.st-chip-primary {
  background: var(--st-primary);
  color: var(--st-on-color);
  border-color: var(--st-primary);
}
.st-chip-primary:hover { background: var(--st-primary-2); }
.st-chip-accent {
  background: var(--st-accent);
  color: var(--st-on-color);
  border-color: var(--st-accent);
}
.st-chip-accent:hover { background: var(--st-accent-2); }

/* --------- Channels list --------- */
.st-channels {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.45rem;
  max-width: 50ch;
}
.st-channels li {
  font-size: 1rem;
  color: var(--st-ink);
}
.st-channels strong { color: var(--st-primary-2); display: inline-block; min-width: 5rem; }
.st-channels a { color: var(--st-accent); text-decoration: underline; text-underline-offset: 3px; }

/* --------- FAQ --------- */
.st-faq {
  margin: 0;
}
.st-faq dt {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--st-primary-2);
  margin-top: 1.5rem;
  margin-bottom: 0.4rem;
}
.st-faq dt:first-of-type { margin-top: 0; }
.st-faq dd {
  margin: 0;
  padding: 0;
  color: var(--st-ink);
  font-size: 1rem;
  max-width: 64ch;
}
.st-faq dd a { color: var(--st-accent); text-decoration: underline; text-underline-offset: 3px; }
.st-faq abbr {
  border-bottom: 1px dotted var(--st-ink-soft);
  cursor: help;
  text-decoration: none;
}

/* --------- Footer --------- */
.st-footer {
  background: var(--st-primary-2);
  color: var(--st-on-color);
  padding: 2.5rem 1.25rem;
}
.st-footer-inner {
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
}
.st-footer p { margin: 0 0 0.5rem; font-size: 0.95rem; }
.st-footer a { color: var(--st-on-color); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.st-footer a:hover { opacity: 0.85; }
.st-footer-meta {
  font-size: 0.85rem;
  opacity: 0.85;
  margin-top: 0.5rem;
}

/* --------- Promises (3-up, plain) --------- */
.st-promise {
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  border-radius: var(--st-radius);
  padding: 1.6rem 1.4rem;
  display: flex;
  flex-direction: column;
}
.st-promise-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--st-primary);
  color: var(--st-on-color);
  font-family: var(--st-mono-stack);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.85rem;
}
.st-promise-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.55rem;
  color: var(--st-ink);
  line-height: 1.3;
  letter-spacing: -0.005em;
}
.st-promise p {
  margin: 0;
  font-size: 0.97rem;
  color: var(--st-ink-soft);
  line-height: 1.55;
}

/* --------- Steps list (lettered A/B/C) --------- */
.st-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.25rem;
  counter-reset: stepnum;
}
.st-steps li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  align-items: start;
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  border-radius: var(--st-radius);
  padding: 1.3rem 1.4rem;
}
.st-steps-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--st-radius-sm);
  background: var(--st-accent);
  color: var(--st-on-color);
  font-family: var(--st-mono-stack);
  font-weight: 600;
  font-size: 1rem;
  flex-shrink: 0;
}
.st-steps li h3 {
  font-size: 1.08rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
  color: var(--st-ink);
  letter-spacing: -0.005em;
}
.st-steps li p {
  margin: 0;
  font-size: 0.97rem;
  color: var(--st-ink-soft);
  line-height: 1.55;
}
.st-steps li kbd { vertical-align: 0.05em; }

/* --------- Use cases --------- */
.st-uses {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .st-uses { grid-template-columns: 1fr 1fr; }
}
.st-use {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.6rem 1rem;
  align-items: start;
  background: var(--st-bg);
  border: 1px solid var(--st-line);
  border-radius: var(--st-radius-sm);
  padding: 0.95rem 1.1rem;
}
.st-use-icon {
  font-size: 1.6rem;
  grid-row: span 2;
  align-self: start;
  line-height: 1;
}
.st-use strong {
  color: var(--st-ink);
  font-size: 0.99rem;
  font-weight: 600;
  line-height: 1.4;
}
.st-use span {
  color: var(--st-ink-soft);
  font-size: 0.93rem;
  line-height: 1.45;
}

/* --------- Detail-page link card --------- */
.st-detail-link {
  background: var(--st-bg);
  border: 1px dashed var(--st-line);
  border-radius: var(--st-radius);
  padding: 1.5rem 1.6rem;
  text-align: center;
}
.st-detail-link p {
  margin: 0 0 0.5rem;
  color: var(--st-ink-soft);
  font-size: 1rem;
}
.st-detail-link p:last-child { margin: 0; }
.st-link-strong {
  color: var(--st-accent);
  font-weight: 600;
  font-size: 1.05rem;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.st-link-strong:hover { color: var(--st-accent-2); }

/* --------- Smaller-screen tweaks --------- */
@media (max-width: 480px) {
  .st-section { padding: 3rem 1.1rem; }
  .st-hero { padding: 3.5rem 1.1rem 2.5rem; }
  .st-cta-row .st-btn { width: 100%; text-align: center; }
}