/* ==========================================================================
   Standby — Subpage system: page heros, pillars, deep rows, comparison
   table, FAQ, data-flow diagram, timeline, spec grids, callouts.
   Builds on tokens/components; reused across product/how/integrations/
   security/pricing.
   ========================================================================== */

/* ---- Active nav link ---- */
.nav__link.is-active {
  color: var(--text);
  background: oklch(100% 0 0 / 0.06);
}

/* ==========================================================================
   Page hero (sub-hero). Accent recolorable via --accent / --accent-soft.
   ========================================================================== */
.page-hero {
  position: relative;
  padding-top: clamp(9rem, 7rem + 7vw, 13rem);
  padding-bottom: clamp(3rem, 2rem + 4vw, 5rem);
  overflow: clip;
  --accent: var(--signal);
  --accent-soft: oklch(84% 0.18 152 / 0.14);
}

.page-hero--cyan { --accent: var(--cyan); --accent-soft: oklch(82% 0.13 210 / 0.14); }
.page-hero--amber { --accent: var(--standby); --accent-soft: oklch(83% 0.15 80 / 0.14); }
.page-hero--violet { --accent: var(--violet); --accent-soft: oklch(72% 0.16 290 / 0.14); }

.page-hero__grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(oklch(100% 0 0 / 0.03) 1px, transparent 1px),
    linear-gradient(90deg, oklch(100% 0 0 / 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: radial-gradient(70% 80% at 30% 0%, #000, transparent 75%);
  mask-image: radial-gradient(70% 80% at 30% 0%, #000, transparent 75%);
}

.page-hero__beam {
  position: absolute;
  top: -40%;
  left: 20%;
  width: 80vw;
  height: 70vh;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(45% 45% at 50% 50%, var(--accent-soft), transparent 70%);
  filter: blur(10px);
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
}

.page-hero .eyebrow { color: var(--accent); }
.page-hero .eyebrow::before { background: var(--accent); box-shadow: 0 0 0 1px var(--accent-soft), 0 0 18px var(--accent-soft); }

.page-hero__title {
  font-size: var(--text-3xl);
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin-bottom: var(--space-5);
}

.page-hero__title em {
  font-style: normal;
  background: linear-gradient(120deg, var(--accent), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-hero__lead {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 60ch;
}

.page-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* quick anchor chips under a page hero */
.jump {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
}

.jump a {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.03em;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-hairline);
  color: var(--text-muted);
  background: oklch(100% 0 0 / 0.03);
  transition: color var(--duration-fast) ease, border-color var(--duration-fast) ease;
}

.jump a:hover { color: var(--text); border-color: var(--color-hairline-strong); }

/* ==========================================================================
   Pillars — big numbered feature blocks (Product page)
   ========================================================================== */
.pillar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  padding-block: clamp(2.5rem, 4vw, 4.5rem);
}

.pillar + .pillar { border-top: 1px solid var(--color-hairline); }
.pillar--reverse .pillar__visual { order: -1; }

.pillar__index {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--signal);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.pillar__index span {
  width: 30px; height: 1px; background: var(--signal); opacity: 0.5;
}

.pillar h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

.pillar__lead {
  font-size: var(--text-lg);
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

.pillar__list { display: grid; gap: var(--space-3); }
.pillar__list li {
  display: flex; gap: var(--space-3); align-items: flex-start;
  font-size: var(--text-sm); color: var(--text-soft);
}
.pillar__list svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 3px; color: var(--signal); }

@media (max-width: 860px) {
  .pillar { grid-template-columns: 1fr; gap: 2.5rem; }
  .pillar--reverse .pillar__visual { order: 0; }
}

/* ==========================================================================
   Generic visual frame for mock UIs
   ========================================================================== */
.frame {
  position: relative;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, oklch(20% 0.016 250 / 0.92), oklch(15% 0.014 250 / 0.96));
  border: 1px solid var(--color-hairline-strong);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.frame__bar {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-hairline);
  background: oklch(100% 0 0 / 0.02);
}
.frame__bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--color-surface-3); }
.frame__bar i:nth-child(1){ background: oklch(72% 0.19 28 / 0.6); }
.frame__bar i:nth-child(2){ background: oklch(83% 0.15 80 / 0.6); }
.frame__bar i:nth-child(3){ background: oklch(84% 0.18 152 / 0.6); }
.frame__title { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--text-faint); letter-spacing: 0.06em; text-transform: uppercase; }
.frame__body { padding: var(--space-5); display: grid; gap: var(--space-3); }

/* small labeled rows inside frames */
.kv { display: flex; justify-content: space-between; align-items: center; font-size: var(--text-sm); padding: 0.6rem 0; border-bottom: 1px dashed var(--color-hairline); }
.kv:last-child { border-bottom: 0; }
.kv span:first-child { color: var(--text-muted); }
.kv span:last-child { font-family: var(--font-mono); color: var(--text); }
.kv .ok { color: var(--signal); }

/* code-ish block */
.codeblock {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--text-soft);
  background: oklch(10% 0.01 250 / 0.6);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  overflow-x: auto;
}
.codeblock .c-key { color: var(--cyan); }
.codeblock .c-str { color: var(--signal); }
.codeblock .c-com { color: var(--text-faint); }

/* ==========================================================================
   Spec / feature grid (small cards)
   ========================================================================== */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.spec-grid--2 { grid-template-columns: repeat(2, 1fr); }
.spec-grid--4 { grid-template-columns: repeat(4, 1fr); }

.spec {
  padding: var(--space-5);
  display: grid;
  gap: var(--space-3);
}
.spec h4 { font-family: var(--font-sans); font-size: var(--text-base); }
.spec p { font-size: var(--text-sm); color: var(--text-muted); }

@media (max-width: 860px) {
  .spec-grid, .spec-grid--4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .spec-grid, .spec-grid--2, .spec-grid--4 { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Callout band
   ========================================================================== */
.callout {
  position: relative;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-hairline-strong);
  background:
    radial-gradient(70% 130% at 0% 0%, oklch(84% 0.18 152 / 0.1), transparent 60%),
    linear-gradient(180deg, oklch(19% 0.016 250), oklch(15% 0.014 250));
  padding: clamp(2rem, 4vw, 3.5rem);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
  overflow: hidden;
}

.callout h2 { font-size: var(--text-2xl); margin-bottom: var(--space-4); }
.callout p { color: var(--text-muted); }

.callout__aside { display: grid; gap: var(--space-3); }

@media (max-width: 820px) { .callout { grid-template-columns: 1fr; } }

/* ==========================================================================
   Data-flow diagram (How it works / Integrations)
   ========================================================================== */
.flow {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
}

.flow__node {
  flex: 1 1 180px;
  min-width: 160px;
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-hairline);
  background: linear-gradient(180deg, oklch(20% 0.016 250), oklch(16.5% 0.014 250));
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.flow__node .icon-chip { width: 40px; height: 40px; }
.flow__node h4 { font-family: var(--font-sans); font-size: var(--text-base); }
.flow__node p { font-size: var(--text-xs); color: var(--text-muted); }

.flow__arrow {
  display: grid;
  place-items: center;
  flex: 0 0 44px;
  color: var(--signal);
  font-size: 1.4rem;
}

@media (max-width: 760px) {
  .flow { flex-direction: column; }
  .flow__arrow { transform: rotate(90deg); height: 36px; }
}

/* ==========================================================================
   Vertical timeline (live-call second-by-second)
   ========================================================================== */
.timeline { position: relative; display: grid; gap: 0; padding-left: var(--space-6); }
.timeline::before {
  content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px;
  width: 2px; background: linear-gradient(180deg, var(--signal), oklch(84% 0.18 152 / 0.12));
}
.tl { position: relative; padding: 0 0 var(--space-6) var(--space-5); }
.tl:last-child { padding-bottom: 0; }
.tl::before {
  content: ""; position: absolute; left: -2px; top: 4px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--color-bg); border: 2px solid var(--signal);
  box-shadow: 0 0 0 4px oklch(84% 0.18 152 / 0.12);
}
.tl__time { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--signal); letter-spacing: 0.06em; }
.tl h4 { font-family: var(--font-sans); font-size: var(--text-base); margin: 3px 0 4px; }
.tl p { font-size: var(--text-sm); color: var(--text-muted); }

/* ==========================================================================
   Comparison table (Pricing)
   ========================================================================== */
.compare-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-hairline); }
.compare {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  font-size: var(--text-sm);
}
.compare th, .compare td {
  padding: var(--space-4) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-hairline);
}
.compare thead th {
  font-family: var(--font-display);
  font-size: var(--text-base);
  color: var(--text);
  background: oklch(100% 0 0 / 0.02);
  position: sticky; top: 0;
}
.compare thead th:first-child { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-faint); font-weight: 400; }
.compare th.is-featured { color: var(--signal); }
.compare tbody th {
  font-weight: 500; color: var(--text-soft);
}
.compare td { color: var(--text-muted); text-align: center; }
.compare td:first-child, .compare tbody th { text-align: left; }
.compare tr:last-child td, .compare tr:last-child th { border-bottom: 0; }
.compare .yes { color: var(--signal); }
.compare .no { color: var(--text-faint); }
.compare col.col-feat { background: oklch(84% 0.18 152 / 0.04); }

/* ==========================================================================
   FAQ accordion
   ========================================================================== */
.faq-list { display: grid; gap: var(--space-3); max-width: 820px; margin-inline: auto; }

.faq {
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, oklch(19% 0.016 250), oklch(16% 0.014 250));
  overflow: hidden;
  transition: border-color var(--duration-fast) ease;
}
.faq.is-open { border-color: var(--color-hairline-strong); }

.faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5);
  text-align: left;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-lg);
  color: var(--text);
}

.faq__icon {
  position: relative;
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 1px solid var(--color-hairline-strong);
}
.faq__icon::before, .faq__icon::after {
  content: ""; position: absolute; top: 50%; left: 50%;
  width: 9px; height: 1.5px; background: var(--signal);
  transform: translate(-50%, -50%);
  transition: transform var(--duration-fast) var(--ease-out-expo);
}
.faq__icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq.is-open .faq__icon::after { transform: translate(-50%, -50%) rotate(0); }

.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-normal) var(--ease-out-expo);
}
.faq__a p {
  padding: 0 var(--space-5) var(--space-5);
  color: var(--text-muted);
  font-size: var(--text-sm);
  max-width: 70ch;
}

/* ==========================================================================
   Mini stat strip (inline numbers row)
   ========================================================================== */
.statstrip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  background: oklch(100% 0 0 / 0.02);
  padding: var(--space-6);
}
.statstrip > div { text-align: center; }
.statstrip .metric__value { font-size: var(--text-2xl); }
@media (max-width: 700px) { .statstrip { grid-template-columns: 1fr 1fr; } }

/* ==========================================================================
   Live terminal (connector window) — streams commands + output on a loop
   ========================================================================== */
.terminal {
  border-top: 1px solid var(--color-hairline);
  background: oklch(10% 0.01 250 / 0.5);
}

.terminal__head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  border-bottom: 1px solid var(--color-hairline);
}

.terminal__head .live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: var(--glow-signal);
  animation: pulse-dot 2s var(--ease-in-out) infinite;
}

.terminal__log {
  position: relative;
  height: 176px;
  overflow: hidden;
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
  color: var(--text-soft);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 18%, #000 100%);
  mask-image: linear-gradient(180deg, transparent, #000 18%, #000 100%);
}

.term-line { white-space: pre; }
.term-prompt { color: var(--signal); font-weight: 600; }
.term-cmd { color: var(--text); }

.term-caret {
  display: inline-block;
  width: 7px;
  height: 1.05em;
  margin-left: 3px;
  vertical-align: text-bottom;
  background: var(--signal);
  animation: blink 1s steps(1) infinite;
}

/* output token colors */
.t-ok { color: var(--signal); }
.t-warn { color: var(--standby); }
.t-err { color: var(--alert); font-weight: 600; }
.t-str { color: var(--cyan); }
.t-dim { color: var(--text-faint); }
.t-twilio { color: var(--cyan); font-weight: 600; }
.t-convoso { color: var(--standby); font-weight: 600; }
.t-ghl { color: var(--violet); font-weight: 600; }

@media (max-width: 520px) {
  .terminal__log { font-size: 11px; height: 200px; }
}

/* ---- section divider label ---- */
.rule {
  display: flex; align-items: center; gap: var(--space-4);
  margin-block: var(--space-7);
  color: var(--text-faint);
  font-family: var(--font-mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: var(--tracking-wide);
}
.rule::before, .rule::after { content: ""; height: 1px; background: var(--color-hairline); flex: 1; }