/* ===== Raven signal accent (distinct from Nox green) ===== */
:root { --live: #6E5AD6; }
body.dark { --live: #9B8BF0; }

/* ===== Pill / live dot ===== */
.pill { align-self: flex-start; }
.pill-live { gap: 6px; }
.pill-live::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--live); box-shadow: 0 0 6px var(--live); animation: livePulse 2s ease-in-out infinite; }
@keyframes livePulse { 0%, 100% { opacity: 1; box-shadow: 0 0 6px var(--live); } 50% { opacity: 0.5; box-shadow: 0 0 12px var(--live); } }
.tag-live::before { background: var(--live); box-shadow: 0 0 6px var(--live); }

/* ===== Hero ===== */
.hero-canvas { opacity: 0.22; }
.hero-desc { max-width: 500px; }

/* ===== Chain strip ===== */
.chain-strip { padding: 14px var(--space-md); display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.chain-strip-trailing { margin-left: auto; color: var(--fg-muted); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.04em; white-space: nowrap; }

/* ===== What Raven Does — 3 pillars ===== */
.rv-pillars { display: grid; grid-template-columns: 1fr 1fr 1fr; }
.rv-pillar { padding: var(--space-lg) var(--space-md); border-right: var(--border); display: flex; flex-direction: column; }
.rv-pillar:last-child { border-right: none; }
.pillar-num { font-family: var(--serif); font-size: var(--text-display); font-weight: 400; color: var(--fg); opacity: 0.12; line-height: 1; margin-bottom: var(--space-md); }
.pillar-heading { font-family: var(--serif); font-size: var(--text-display); font-weight: 400; line-height: 1.15; letter-spacing: -0.02em; margin-bottom: var(--space-sm); }
.pillar-lead { font-family: var(--serif); font-style: italic; font-size: var(--text-lg); color: var(--fg); line-height: 1.4; margin-bottom: var(--space-sm); }
.pillar-body { font-size: var(--text-base); line-height: 1.6; color: var(--fg); opacity: 0.6; }

/* ===== Mechanism (how a blind read works) ===== */
.mech-wrap { position: relative; }
.mech-inner { padding: var(--space-lg) var(--space-md); position: relative; z-index: 2; }
.mech-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: var(--space-lg); gap: var(--space-md); }
.mech-desc { text-align: right; flex-shrink: 0; max-width: 460px; font-size: var(--text-base); line-height: 1.55; color: var(--fg); opacity: 0.7; }
.matrix-wrap { position: relative; height: 220px; margin-bottom: var(--space-md); border: var(--border); overflow: hidden; mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent); }
.matrix-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.mech-footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-xs); font-size: var(--text-xs); font-weight: 500; letter-spacing: 0.04em; color: var(--fg-muted); }

/* ===== Card split (shared) ===== */
.card-split { display: grid; grid-template-columns: 1fr 1fr; border-bottom: var(--border); }
.card-split-left { padding: var(--space-lg) var(--space-md); border-right: var(--border); display: flex; flex-direction: column; gap: var(--space-md); position: relative; overflow: hidden; }
.card-split-right { padding: var(--space-lg) var(--space-md); display: flex; flex-direction: column; gap: var(--space-md); position: relative; }
.card-split-right > *:not(.dots) { position: relative; z-index: 2; }
.card-split-left > *:not(canvas):not(.dots) { position: relative; z-index: 2; }

/* ===== Use case tabs & panels ===== */
.uc-tabs { display: flex; border-bottom: var(--border); overflow-x: auto; -webkit-overflow-scrolling: touch; }
.uc-tab { appearance: none; border: none; background: transparent; padding: var(--space-sm) var(--space-md); font-family: var(--serif); font-size: var(--text-lg); color: var(--fg-muted); cursor: pointer; white-space: nowrap; border-right: var(--border); transition: background 0.2s, color 0.2s; flex-shrink: 0; }
.uc-tab:last-child { border-right: none; }
.uc-tab:hover { background: var(--fg-ghost); }
.uc-tab.active { color: var(--fg); background: var(--fg-ghost); }
.uc-panel { display: none; }
.uc-panel.active { display: grid; grid-template-columns: 1fr 1fr; border-bottom: var(--border); min-height: 420px; }
.uc-left { padding: var(--space-lg) var(--space-md); border-right: var(--border); display: flex; flex-direction: column; justify-content: flex-start; gap: var(--space-sm); position: relative; overflow: hidden; }
.uc-left > *:not(canvas):not(.dots) { position: relative; z-index: 2; }
.uc-right { padding: var(--space-lg) var(--space-md); display: flex; flex-direction: column; justify-content: flex-start; gap: var(--space-sm); position: relative; }
.uc-right > *:not(.dots) { position: relative; z-index: 2; }
.uc-title { font-family: var(--serif); font-size: var(--text-display); font-weight: 400; line-height: 1.1; letter-spacing: -0.02em; }
.uc-body { font-size: var(--text-base); line-height: 1.6; color: var(--fg); opacity: 0.68; max-width: 480px; }
.uc-detail-row { display: flex; justify-content: space-between; align-items: baseline; padding-bottom: 10px; border-bottom: var(--border); gap: var(--space-sm); }
.uc-detail-label { font-family: var(--serif); font-style: italic; font-size: var(--text-base); }
.uc-detail-value { font-size: var(--text-sm); font-weight: 600; white-space: nowrap; color: var(--fg); opacity: 0.72; }
.dither-bg { position: absolute; inset: 0; z-index: 0; opacity: 0.06; pointer-events: none; }

/* ===== Architecture (sidecar + blue-green) ===== */
.arch-split .card-split-left { height: 520px; }
#archLink { position: absolute; inset: 0; display: block; cursor: pointer; z-index: 1; }
#archBox { position: absolute; inset: 0; background: var(--bg); }
#archBox canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.arch-hint { position: absolute; right: var(--space-sm); top: var(--space-sm); z-index: 2; font-size: var(--text-xs); letter-spacing: 0.04em; color: var(--fg-muted); opacity: 0; transition: opacity 0.25s; pointer-events: none; }
#archLink:hover .arch-hint { opacity: 1; }

/* ===== Stats band ===== */
.stat-band { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: var(--border); }
.stat { padding: var(--space-md); border-right: var(--border); display: flex; flex-direction: column; gap: 4px; }
.stat:last-child { border-right: none; }
.stat-num { font-family: var(--serif); font-size: var(--text-display); line-height: 1; }
.stat-lbl { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.05em; color: var(--fg-muted); }
@media (max-width: 768px) { .stat-band { grid-template-columns: 1fr 1fr; } .stat:nth-child(2) { border-right: none; } .stat:nth-child(-n+2) { border-bottom: var(--border); } }

/* ===== Encoder explorer ===== */
.enc-split .card-split-left { display: flex; flex-direction: column; justify-content: center; gap: var(--space-md); min-height: 360px; }
.enc-viz { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.enc-cell { height: 36px; border: var(--border-strong); background: var(--bg); transition: background 0.3s ease, border-color 0.3s ease; }
.enc-cell.hot { background: var(--live); border-color: var(--live); }
.enc-caption { font-family: var(--serif); font-style: italic; font-size: var(--text-base); color: var(--fg-muted); }
.enc-rows { display: flex; flex-direction: column; }
.enc-row { display: grid; grid-template-columns: auto 1fr auto; align-items: baseline; gap: var(--space-md); padding: var(--space-md) var(--space-xs); border-bottom: var(--border); cursor: pointer; transition: background 0.2s, padding-left 0.2s; }
.enc-row:hover { background: var(--fg-ghost); }
.enc-row.active { background: var(--fg-ghost); }
.enc-row.active .enc-name { font-style: italic; }
.enc-name { font-family: var(--serif); font-size: var(--text-lg); }
.enc-desc { font-size: var(--text-sm); color: var(--fg-muted); line-height: 1.5; }
.enc-size { font-family: var(--mono); font-size: var(--text-sm); font-weight: 700; white-space: nowrap; }
.enc-metrics { display: flex; flex-direction: column; gap: 9px; margin-top: var(--space-md); border-top: var(--border); padding-top: var(--space-md); }
.enc-metric-row { display: flex; justify-content: space-between; align-items: baseline; gap: var(--space-sm); }
.enc-metric-row span:first-child { font-family: var(--serif); font-style: italic; font-size: var(--text-base); color: var(--fg-muted); }
.enc-metric-row span:last-child { font-size: var(--text-sm); font-weight: 600; white-space: nowrap; }
.arch-credit { font-size: var(--text-xs); color: var(--fg-muted); }
.arch-credit a { color: var(--fg); text-decoration: none; border-bottom: 1px solid var(--fg-faint); }
.arch-credit a:hover { opacity: 0.6; }

/* ===== Encoders ===== */
.enc-rows { display: flex; flex-direction: column; }
.enc-row { display: grid; grid-template-columns: auto 1fr auto; align-items: baseline; gap: var(--space-md); padding: var(--space-md) 0; border-bottom: var(--border); }
.enc-row:last-child { border-bottom: none; }
.enc-name { font-family: var(--serif); font-size: var(--text-lg); }
.enc-desc { font-size: var(--text-sm); color: var(--fg-muted); line-height: 1.5; }
.enc-size { font-family: var(--mono); font-size: var(--text-sm); font-weight: 700; white-space: nowrap; }

/* ===== Reveal CTAs ===== */
.rv-ctas { display: flex; gap: var(--space-sm); margin-top: var(--space-lg); flex-wrap: wrap; }
.rv-ctas .cta-bar { flex: 1; min-width: 200px; }
.reveal-heading { font-family: var(--serif); font-size: clamp(3.5rem, 11vw, 8rem); font-weight: 400; line-height: 0.9; letter-spacing: -0.04em; margin-bottom: var(--space-lg); }
.reveal-heading span { display: inline-block; opacity: 0.15; filter: blur(4px); transition: all 0.5s ease; cursor: default; }
.reveal-heading:hover span { opacity: 1; filter: blur(0); }
.reveal-cols { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); margin-top: var(--space-lg); }
.reveal-col { border-top: var(--border); padding-top: var(--space-md); }
.reveal-col p { font-family: var(--serif); font-style: italic; font-size: var(--text-sm); line-height: 1.55; color: var(--fg-muted); max-width: 520px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .card-split { grid-template-columns: 1fr; }
  .card-split-left { border-right: none; border-bottom: var(--border); }
  .uc-panel.active { grid-template-columns: 1fr; }
  .uc-left { border-right: none; border-bottom: var(--border); }
  .uc-tab { padding: var(--space-sm); font-size: var(--text-base); }
  .arch-split { min-height: auto; }
  .arch-split .card-split-left { height: 380px; }
  .heading-display { font-size: clamp(1.2rem, 2.5vw, 2rem); }
}
@media (max-width: 768px) {
  .chain-strip-trailing { display: none; }
  .rv-pillars { grid-template-columns: 1fr; }
  .rv-pillar { border-right: none; border-bottom: var(--border); }
  .rv-pillar:last-child { border-bottom: none; }
  .mech-header { flex-direction: column; align-items: flex-start; gap: var(--space-xs); }
  .mech-desc { text-align: left; max-width: 100%; }
  .matrix-wrap { height: 150px; }
  .uc-panel.active { grid-template-columns: 1fr; min-height: 470px; }
  .uc-left { border-right: none; border-bottom: var(--border); padding: var(--space-md); }
  .uc-right { padding: var(--space-md); }
  .uc-tab { padding: var(--space-xs) var(--space-sm); font-size: var(--text-sm); }
  .arch-split .card-split-left { height: 300px; }
  .enc-row { grid-template-columns: 1fr auto; gap: var(--space-sm); }
  .enc-desc { grid-column: 1 / -1; }
  .reveal { min-height: auto !important; }
  .reveal-heading { font-size: clamp(2.8rem, 14vw, 4rem); margin-bottom: var(--space-md); }
  .reveal-heading span { opacity: 1; filter: none; }
  .reveal-cols { grid-template-columns: 1fr; gap: var(--space-sm); }
}
@media (max-width: 420px) {
  .hero-title { font-size: clamp(2.8rem, 15vw, 4rem); }
  .reveal-heading { font-size: clamp(2.2rem, 14vw, 3rem); }
}