/* ==========================================================================
   openTorah — Concept G · Argon
   "The Critical Folio & Interactive Source Apparatus"
   Palette: White (#ffffff) base + Restrained Anchor Ink (#23322d),
            Anchor Green (#0b5c3e), Pale Mint (#f1f9f6 / #cee9df),
            Secondary Apparatus Purple (#433968 / #f4f2f9).
   Zero cream, zero large green fields.
   ========================================================================== */

:root {
  --bg-ground: #ffffff;
  --bg-step-1: #f7faf8;
  --bg-step-2: #eef4f1;
  --bg-reader-cool: #f6f9fb;
  --ink: #23322d;
  --ink-secondary: #43544e;
  --ink-muted: #687a73;
  --border-hairline: #dce5e1;
  --border-strong: #b8c9c2;

  /* Restrained Anchor Primary Accent (Green) */
  --accent-green: #0b5c3e;
  --accent-green-hover: #045137;
  --mint-pale: #f1f9f6;
  --mint-tint: #cee9df;

  /* Restrained Anchor Secondary Accent (Apparatus / Source Notes Purple) */
  --accent-purple: #433968;
  --purple-pale: #f4f2f9;
  --purple-tint: #dcd7ec;

  /* Status & Diff */
  --diff-del-bg: #fce8e6;
  --diff-del-ink: #9c2b23;
  --diff-ins-bg: #e6f4ea;
  --diff-ins-ink: #0b5c3e;

  /* Glazed Overlays */
  --glass-bg: rgba(255, 255, 255, 0.86);
  --glass-heavy: rgba(255, 255, 255, 0.92);
  --glass-veil: rgba(35, 50, 45, 0.24);

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', 'DM Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif-en: 'Source Serif 4', 'Newsreader', Georgia, serif;
  --font-serif-he: 'Frank Ruhl Libre', 'Noto Serif Hebrew', 'Arial Hebrew Scholar', 'David Libre', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, monospace; /* taste-skill-ignore */

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 150ms;
  --dur-med: 280ms;
  --dur-slow: 460ms;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--bg-ground);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-ground);
  color: var(--ink);
  min-height: 100dvh;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

/* Reduced Motion Support (System & Explicit Toggle) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

html[data-reduced-motion="true"],
html[data-reduced-motion="true"] *,
html[data-reduced-motion="true"] *::before,
html[data-reduced-motion="true"] *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

/* Focus states: tonal fill + crisp 2px Anchor green underline/outline */
:focus-visible {
  outline: 2px solid var(--accent-green);
  outline-offset: 2px;
}

button, input, select, textarea {
  font-family: inherit;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ==========================================================================
   Heron-Style Registration Frame & Corner Crosshairs (+)
   ========================================================================== */
.reg-frame {
  position: relative;
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-ground);
}

.reg-corner {
  position: absolute;
  width: 11px;
  height: 11px;
  pointer-events: none;
  z-index: 4;
  color: var(--accent-green);
}
.reg-corner::before,
.reg-corner::after {
  content: '';
  position: absolute;
  background: currentColor;
}
.reg-corner::before {
  width: 11px;
  height: 1.5px;
  top: 4.75px;
  left: 0;
}
.reg-corner::after {
  width: 1.5px;
  height: 11px;
  top: 0;
  left: 4.75px;
}
.reg-corner.tl { top: -6px; left: -6px; }
.reg-corner.tr { top: -6px; right: -6px; }
.reg-corner.bl { bottom: -6px; left: -6px; }
.reg-corner.br { bottom: -6px; right: -6px; }

/* ==========================================================================
   Top Navigation Shell
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px); /* taste-skill-ignore */
  -webkit-backdrop-filter: blur(16px); /* taste-skill-ignore */
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
}

.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 28px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px 0;
}

.brand-glyph {
  width: 24px;
  height: 24px;
  border: 1.5px solid var(--accent-green);
  background: var(--mint-pale);
  color: var(--accent-green);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif-he);
  font-weight: 700;
  font-size: 0.95rem;
}

.concept-badge {
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 8px;
  background: var(--bg-step-1);
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  color: var(--ink-secondary);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 13px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color var(--dur-fast), background-color var(--dur-fast);
}

.nav-link:hover {
  color: var(--ink);
  background: var(--bg-step-1);
}

.nav-link.active {
  color: var(--accent-green);
  font-weight: 600;
  background: var(--mint-pale);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 0;
  height: 2px;
  background: var(--accent-green);
}

.nav-count {
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.7rem;
  padding: 1px 5px;
  background: var(--bg-ground);
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  color: var(--ink-muted);
}

.nav-link.active .nav-count {
  border-color: var(--mint-tint);
  color: var(--accent-green);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 15px;
  font-size: 0.84rem;
  font-weight: 600;
  border: 1px solid transparent; /* taste-skill-ignore */
  cursor: pointer;
  transition: background-color var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-green);
  color: #ffffff;
  border-color: var(--accent-green);
}
.btn-primary:hover {
  background: var(--accent-green-hover);
  border-color: var(--accent-green-hover);
}

.btn-secondary {
  background: var(--bg-ground);
  color: var(--ink);
  border-color: var(--border-strong);
}
.btn-secondary:hover {
  background: var(--bg-step-1);
  border-color: var(--ink);
}

.btn-ghost {
  background: var(--bg-step-1);
  color: var(--ink-secondary);
  border-color: var(--border-hairline);
}
.btn-ghost:hover {
  background: var(--bg-step-2);
  color: var(--ink);
}

.btn-purple {
  background: var(--purple-pale);
  color: var(--accent-purple);
  border-color: var(--purple-tint);
}
.btn-purple:hover {
  background: var(--purple-tint);
}

.btn-sm {
  padding: 6px 11px;
  font-size: 0.78rem;
}

/* ==========================================================================
   Surface Container & Route Transitions
   ========================================================================== */
.surface-view {
  display: none;
  flex: 1;
  width: 100%;
  animation: surfaceFade var(--dur-med) var(--ease-out);
}

.surface-view.active {
  display: block;
}

@keyframes surfaceFade {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ==========================================================================
   SURFACE 1: HOMEPAGE — Heron Interactive Folio Canvas + Titan Expanding Sections
   ========================================================================== */
.hero-section {
  padding: 40px 0 72px;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
}

.hero-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 36px;
  align-items: start;
}

.hero-copy {
  padding-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.eyebrow-mono {
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-green);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  display: inline-block;
}

.hero-title {
  font-size: clamp(2.15rem, 3.4vw, 3.25rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.hero-title-he {
  display: block;
  font-family: var(--font-serif-he);
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  font-weight: 600;
  color: var(--ink-secondary);
  margin-top: 8px;
  letter-spacing: 0;
}

.hero-lead {
  font-size: 1.04rem;
  line-height: 1.62;
  color: var(--ink-secondary);
  max-width: 54ch;
}

/* Hero Quick Search Bar */
.hero-search-form {
  display: flex;
  gap: 0;
  border: 1px solid var(--ink); /* taste-skill-ignore */
  background: var(--bg-ground);
}

.hero-search-input {
  flex: 1;
  border: none;
  padding: 13px 16px;
  font-size: 0.94rem;
  background: transparent;
  min-width: 0;
}
.hero-search-input:focus {
  outline: none;
  background: var(--mint-pale);
}

.hero-search-submit {
  background: var(--accent-green);
  color: #ffffff;
  border: none;
  padding: 0 20px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}
.hero-search-submit:hover {
  background: var(--accent-green-hover);
}

.hero-quick-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 0.78rem;
  color: var(--ink-muted);
}

.chip-btn {
  padding: 4px 10px;
  font-size: 0.76rem;
  background: var(--bg-step-1);
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  color: var(--ink-secondary);
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease, opacity 0.18s ease var(--dur-fast);
}
.chip-btn:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  background: var(--mint-pale);
}

.hero-telemetry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-hairline); /* taste-skill-ignore */
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  padding: 14px 0;
  gap: 12px;
}

.telemetry-cell {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.telemetry-val {
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink);
}
.telemetry-lbl {
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

/* Heron Interactive Source Apparatus Canvas */
.heron-canvas-wrap {
  display: flex;
  flex-direction: column;
  background: var(--bg-ground);
}

.heron-hud-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  background: var(--bg-step-1);
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.72rem;
  color: var(--ink-secondary);
  gap: 12px;
  flex-wrap: wrap;
}

.heron-hud-coords {
  display: flex;
  align-items: center;
  gap: 12px;
}

.coord-pill {
  padding: 2px 6px;
  background: var(--bg-ground);
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  color: var(--ink);
}

.heron-stage {
  position: relative;
  height: 410px;
  background: var(--bg-reader-cool);
  overflow: hidden;
  cursor: crosshair;
  user-select: none;
  touch-action: pan-y;
  display: grid;
  grid-template-columns: 46% 54%;
}

.heron-folio-pane {
  position: relative;
  height: 100%;
  border-right: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 12px;
}

.heron-folio-img-box {
  position: relative;
  height: 100%;
  aspect-ratio: 900 / 1350;
  max-width: 100%;
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  overflow: hidden;
  background: #ffffff;
}

.heron-folio-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}

/* Crosshair lines inside Heron Stage */
.heron-crosshair-h,
.heron-crosshair-v {
  position: absolute;
  pointer-events: none;
  z-index: 5;
  background: rgba(11, 92, 62, 0.32);
}
.heron-crosshair-h {
  left: 0;
  right: 0;
  height: 1px; /* taste-skill-ignore */
  top: 42%;
}
.heron-crosshair-v {
  top: 0;
  bottom: 0;
  width: 1px; /* taste-skill-ignore */
  left: 28%;
}

.heron-reticle {
  position: absolute;
  width: 36px;
  height: 36px;
  margin-left: -18px;
  margin-top: -18px;
  border: 1.5px solid var(--accent-green);
  background: rgba(206, 233, 223, 0.28);
  pointer-events: none;
  z-index: 6;
  top: 42%;
  left: 28%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.heron-reticle::after {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--accent-green);
}

/* Folio Bounding Highlight Boxes on Scan */
.folio-hotspot {
  position: absolute;
  border: 1.5px solid rgba(11, 92, 62, 0.55);
  background: rgba(206, 233, 223, 0.25);
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease, opacity 0.18s ease var(--dur-fast);
  z-index: 4;
}
.folio-hotspot.note-type {
  border-color: rgba(67, 57, 104, 0.65);
  background: rgba(220, 215, 236, 0.32);
}
.folio-hotspot.active,
.folio-hotspot:hover {
  background: rgba(11, 92, 62, 0.22);
  border-color: var(--accent-green);
  border-width: 2px;
}
.folio-hotspot.note-type.active,
.folio-hotspot.note-type:hover {
  background: rgba(67, 57, 104, 0.25);
  border-color: var(--accent-purple);
}

.hotspot-tag {
  position: absolute;
  top: -18px;
  left: -1px;
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.64rem;
  font-weight: 700;
  padding: 1px 5px;
  background: var(--accent-green);
  color: #ffffff;
  white-space: nowrap;
}
.folio-hotspot.note-type .hotspot-tag {
  background: var(--accent-purple);
}

/* Right half of Heron Canvas: Live Apparatus Callout Inspector */
.heron-inspector-pane {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--bg-ground);
  overflow-y: auto;
}

.callout-pin-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.callout-pin-btn {
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.72rem;
  font-weight: 600;
  padding: 5px 9px;
  background: var(--bg-step-1);
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  color: var(--ink-secondary);
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease, opacity 0.18s ease var(--dur-fast);
}
.callout-pin-btn.active {
  background: var(--accent-green);
  color: #ffffff;
  border-color: var(--accent-green);
}
.callout-pin-btn.note-pin.active {
  background: var(--accent-purple);
  border-color: var(--accent-purple);
}

.inspector-card {
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-step-1);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.inspector-hebrew {
  font-family: var(--font-serif-he);
  font-size: 1.24rem;
  line-height: 1.65;
  color: var(--ink);
  direction: rtl;
  text-align: right;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
}

.inspector-english {
  font-family: var(--font-serif-en);
  font-size: 0.96rem;
  line-height: 1.58;
  color: var(--ink);
}

.inspector-apparatus-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 0.76rem;
}

.token-badge {
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.72rem;
  padding: 2px 7px;
  background: var(--mint-pale);
  border: 1px solid var(--mint-tint); /* taste-skill-ignore */
  color: var(--accent-green);
}

.note-badge {
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.72rem;
  padding: 2px 7px;
  background: var(--purple-pale);
  border: 1px solid var(--purple-tint); /* taste-skill-ignore */
  color: var(--accent-purple);
}

.heron-footer-bar {
  padding: 11px 16px;
  border-top: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-ground);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* ==========================================================================
   Titan-Style Expanding Product Architecture Sections
   ========================================================================== */
.expanding-architecture-section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
}

.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.section-h2 {
  font-size: clamp(1.65rem, 2.5vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--ink);
}

.section-sub {
  font-size: 0.96rem;
  color: var(--ink-secondary);
  max-width: 58ch;
}

.titan-accordion-stack {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink); /* taste-skill-ignore */
}

.titan-item {
  border-bottom: 1px solid var(--border-strong); /* taste-skill-ignore */
  background: var(--bg-ground);
  transition: background-color var(--dur-med) var(--ease-out);
}

.titan-item[data-expanded="true"] {
  background: var(--bg-step-1);
}

.titan-trigger-bar {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  width: 100%;
}

.titan-trigger {
  flex: 1;
  display: grid;
  grid-template-columns: 64px 1.2fr 1.6fr auto;
  align-items: center;
  gap: 20px;
  padding: 24px 20px;
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: background-color var(--dur-fast);
}

.titan-trigger:hover {
  background: var(--mint-pale);
}

.titan-index {
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-green);
}

.titan-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.titan-summary {
  font-size: 0.9rem;
  color: var(--ink-secondary);
}

.titan-state-pill {
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.74rem;
  font-weight: 600;
  padding: 5px 11px;
  border: 1px solid var(--border-strong); /* taste-skill-ignore */
  background: var(--bg-ground);
  color: var(--ink);
}

.titan-item[data-expanded="true"] .titan-state-pill {
  background: var(--accent-green);
  color: #ffffff;
  border-color: var(--accent-green);
}

/* Dedicated Drag-to-Expand Handle on Titan Sections */
.drag-expand-handle {
  width: 48px;
  border-left: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-step-1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  cursor: ns-resize;
  touch-action: none;
  user-select: none;
  color: var(--ink-muted);
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.62rem;
  transition: background-color var(--dur-fast), color var(--dur-fast);
}
.drag-expand-handle:hover {
  background: var(--mint-pale);
  color: var(--accent-green);
}
.grip-bars {
  width: 16px;
  height: 6px;
  border-top: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
}

.titan-body {
  display: none;
  padding: 0 20px 28px 84px;
  border-top: 1px solid var(--border-hairline); /* taste-skill-ignore */
}

.titan-item[data-expanded="true"] .titan-body {
  display: block;
  padding-top: 24px;
}

.titan-workbench-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  background: var(--bg-ground);
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  padding: 22px;
}

/* Featured Canonical Works Strip on Homepage */
.featured-works-section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
}

.works-table-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink); /* taste-skill-ignore */
}

.work-row-item {
  display: grid;
  grid-template-columns: 110px 1.5fr 1.1fr 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 20px 16px;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-ground);
  transition: background-color var(--dur-fast);
}
.work-row-item:hover {
  background: var(--bg-step-1);
}

/* Research Survey Section */
.survey-section {
  padding: 72px 0;
  background: var(--bg-step-1);
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
}

.survey-box {
  background: var(--bg-ground);
  border: 1px solid var(--border-strong); /* taste-skill-ignore */
  padding: 36px 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: center;
}

/* ==========================================================================
   SURFACE 2: LOCAL CORPUS SEARCH (#search)
   ========================================================================== */
.surface-header-band {
  padding: 36px 0 24px;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-ground);
}

.disclosure-banner {
  margin-top: 16px;
  padding: 11px 16px;
  background: var(--mint-pale);
  border: 1px solid var(--mint-tint); /* taste-skill-ignore */
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.83rem;
  color: var(--ink);
  flex-wrap: wrap;
}

.search-controls-bar {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-step-1);
}

.search-toolbar-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: 12px;
  align-items: center;
}

.field-input, .field-select {
  width: 100%;
  padding: 10px 13px;
  font-size: 0.88rem;
  background: var(--bg-ground);
  border: 1px solid var(--border-strong); /* taste-skill-ignore */
  color: var(--ink);
}
.field-input:focus, .field-select:focus {
  border-color: var(--accent-green);
  outline: 2px solid var(--accent-green);
  outline-offset: -1px;
}

.search-results-layout {
  padding: 28px 0 72px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.result-card {
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-ground);
  padding: 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color var(--dur-fast), background-color var(--dur-fast);
}
.result-card:hover {
  border-color: var(--accent-green);
  background: var(--bg-step-1);
}

.result-card-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.result-bilingual-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding-top: 8px;
  border-top: 1px solid var(--border-hairline); /* taste-skill-ignore */
}

.empty-state-box {
  border: 1px solid var(--border-strong); /* taste-skill-ignore */
  background: var(--bg-step-1);
  padding: 48px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

mark.search-hl {
  background: var(--mint-tint);
  color: var(--ink);
  padding: 0 3px;
  font-weight: 600;
}

/* ==========================================================================
   SURFACE 3: BROWSABLE CATALOGUE (#catalogue)
   ========================================================================== */
.catalogue-layout {
  padding: 28px 0 72px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  align-items: start;
}

.catalogue-sidebar {
  position: sticky;
  top: 84px;
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-step-1);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.filter-group-title {
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
  margin-bottom: 6px;
}

.filter-nav-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  font-size: 0.84rem;
  background: transparent;
  border: 1px solid transparent; /* taste-skill-ignore */
  color: var(--ink-secondary);
  cursor: pointer;
  text-align: left;
}
.filter-nav-btn:hover {
  background: var(--bg-ground);
  color: var(--ink);
}
.filter-nav-btn.active {
  background: var(--bg-ground);
  border-color: var(--accent-green);
  color: var(--accent-green);
  font-weight: 600;
}

.series-accordion-card {
  border: 1px solid var(--border-strong); /* taste-skill-ignore */
  background: var(--bg-ground);
  margin-bottom: 16px;
}

.series-header-bar {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  background: var(--bg-step-1);
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
}

.series-trigger-btn {
  flex: 1;
  padding: 16px 20px;
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  text-align: left;
}
.series-trigger-btn:hover {
  background: var(--mint-pale);
}

/* ==========================================================================
   SURFACE 4: LIST VIEW — FILTERED RESULTS & READING LIST (#list)
   ========================================================================== */
.list-tabs-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  flex-wrap: wrap;
}

.segmented-tabs {
  display: inline-flex;
  border: 1px solid var(--ink); /* taste-skill-ignore */
  background: var(--bg-ground);
}

.seg-tab-btn {
  padding: 10px 18px;
  font-size: 0.86rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--ink-secondary);
  cursor: pointer;
}
.seg-tab-btn.active {
  background: var(--accent-green);
  color: #ffffff;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.data-table th {
  text-align: left;
  padding: 12px 14px;
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  border-bottom: 1px solid var(--ink); /* taste-skill-ignore */
  background: var(--bg-step-1);
}
.data-table td {
  padding: 14px;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  vertical-align: middle;
}
.data-table tr:hover td {
  background: var(--bg-step-1);
}

/* ==========================================================================
   SURFACE 5: DOCUMENT READER (#reader) — Cool Glass + White + Apparatus
   ========================================================================== */
.reader-surface-wrap {
  background: linear-gradient(180deg, #f4f8fa 0%, #ffffff 360px); /* taste-skill-ignore */
  min-height: calc(100dvh - 64px);
  padding-bottom: 80px;
}

.reader-top-command {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px); /* taste-skill-ignore */
  -webkit-backdrop-filter: blur(18px); /* taste-skill-ignore */
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  padding: 14px 0;
  position: sticky;
  top: 64px;
  z-index: 40;
}

.reader-command-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.reader-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.reader-workspace-grid {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 28px;
  padding-top: 24px;
  align-items: start;
}

.reader-workspace-grid.scan-collapsed {
  grid-template-columns: 52px 1fr;
}

/* Left Column: Printed Folio Scan & Continuation Slice */
.reader-scan-panel {
  position: sticky;
  top: 136px;
  background: var(--bg-ground);
  border: 1px solid var(--border-strong); /* taste-skill-ignore */
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.scan-panel-header {
  padding: 10px 14px;
  background: var(--bg-step-1);
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.scan-canvas-stage {
  position: relative;
  background: #f0f4f7;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  user-select: none;
  touch-action: pan-y;
}

.scan-page-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 900 / 1350;
  background: #ffffff;
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  overflow: hidden;
}

.scan-page-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  pointer-events: none;
}

.scan-overlay-box {
  position: absolute;
  background: rgba(11, 92, 62, 0.18);
  border-bottom: 2px solid var(--accent-green);
  pointer-events: none;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease, opacity 0.18s ease var(--dur-fast);
}

.scan-overlay-box.footnote-box {
  background: rgba(67, 57, 104, 0.22);
  border-bottom: 2px solid var(--accent-purple);
}

/* Continuation slice for page-break passages (Passage 7 spanning p.26 -> p.27) */
.scan-continuation-slice {
  width: 100%;
  background: var(--mint-pale);
  border: 1px solid var(--mint-tint); /* taste-skill-ignore */
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.slice-crop-box {
  position: relative;
  width: 100%;
  height: 76px;
  overflow: hidden;
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: #ffffff;
}

.slice-crop-box img {
  width: 100%;
  position: absolute;
  top: -62px;
  left: 0;
}

/* Right Column: Bilingual Discourse Reader + Gesture Stage + Apparatus */
.reader-main-column {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.work-masthead-card {
  background: var(--bg-ground);
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gesture-stage-banner {
  background: var(--bg-step-1);
  border: 1px solid var(--border-strong); /* taste-skill-ignore */
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  touch-action: pan-y;
  user-select: none;
  cursor: grab;
}
.gesture-stage-banner:active {
  cursor: grabbing;
}

/* Bilingual Passage Rows */
.passages-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  touch-action: pan-y;
}

.passage-card {
  background: var(--bg-ground);
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  padding: 20px 24px;
  transition: transform var(--dur-fast), background-color var(--dur-fast), border-color var(--dur-fast);
  cursor: pointer;
  position: relative;
}

.passage-card:hover {
  background: var(--bg-step-1);
}

.passage-card.active {
  background: var(--mint-pale);
  border-color: var(--accent-green);
  border-left-width: 4px;
}

.passage-meta-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.74rem;
  color: var(--ink-muted);
}

.passage-bilingual-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
  align-items: baseline;
}

.passage-en {
  font-family: var(--font-serif-en);
  font-size: 1.08rem;
  line-height: 1.68;
  color: var(--ink);
}

.passage-he {
  font-family: var(--font-serif-he);
  font-size: 1.32rem;
  line-height: 1.72;
  color: var(--ink);
  direction: rtl;
  text-align: right;
}

.fn-marker-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.72rem;
  font-weight: 700;
  padding: 1px 6px;
  margin: 0 3px;
  background: var(--purple-pale);
  border: 1px solid var(--purple-tint); /* taste-skill-ignore */
  color: var(--accent-purple);
  cursor: pointer;
  vertical-align: super;
  line-height: 1.2;
}
.fn-marker-btn:hover,
.fn-marker-btn.active {
  background: var(--accent-purple);
  color: #ffffff;
  border-color: var(--accent-purple);
}

.passage-explanation {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border-hairline); /* taste-skill-ignore */
  font-size: 0.85rem;
  color: var(--ink-secondary);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

/* ==========================================================================
   Pullable / Draggable Apparatus & Source Notes Drawer (Glazed Cool Glass)
   ========================================================================== */
.apparatus-drawer {
  background: var(--glass-heavy);
  backdrop-filter: blur(20px) saturate(140%); /* taste-skill-ignore */
  -webkit-backdrop-filter: blur(20px) saturate(140%); /* taste-skill-ignore */
  border: 1px solid var(--border-strong); /* taste-skill-ignore */
  margin-top: 16px;
  overflow: hidden;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease, opacity 0.18s ease var(--dur-med) var(--ease-out);
}

.apparatus-handle-bar {
  padding: 10px 18px;
  background: var(--bg-step-1);
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: ns-resize;
  touch-action: none;
  user-select: none;
}

.handle-pill-indicator {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono); /* taste-skill-ignore */
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--accent-purple);
}

.apparatus-tabs {
  display: flex;
  gap: 4px;
  padding: 10px 18px 0;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-ground);
  flex-wrap: wrap;
}

.app-tab-btn {
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--ink-secondary);
  cursor: pointer;
}
.app-tab-btn.active {
  color: var(--accent-purple);
  border-bottom-color: var(--accent-purple);
  background: var(--purple-pale);
}

.apparatus-body {
  padding: 20px;
}

.apparatus-drawer[data-open="false"] .apparatus-tabs,
.apparatus-drawer[data-open="false"] .apparatus-body {
  display: none;
}

.source-note-item {
  padding: 14px 16px;
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-ground);
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
}
.source-note-item.active {
  background: var(--purple-pale);
  border-color: var(--accent-purple);
  border-left-width: 4px;
}

/* ==========================================================================
   BLURRY GLAZED GESTURE TEACHING OVERLAY WITH ETCHED LITHOGRAPHIC HANDS
   ========================================================================== */
.gesture-overlay-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(241, 249, 246, 0.72);
  backdrop-filter: blur(22px) saturate(145%); /* taste-skill-ignore */
  -webkit-backdrop-filter: blur(22px) saturate(145%); /* taste-skill-ignore */
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow-y: auto;
}

.gesture-overlay-backdrop.open {
  display: flex;
}

.gesture-coach-sheet {
  width: 100%;
  max-width: 1180px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--ink); /* taste-skill-ignore */
  display: flex;
  flex-direction: column;
  max-height: 92vh;
  overflow-y: auto;
}

.gesture-sheet-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--bg-ground);
  flex-wrap: wrap;
}

.gesture-plates-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
}

.litho-plate-card {
  padding: 22px;
  border-right: 1px solid var(--border-hairline); /* taste-skill-ignore */
  background: var(--bg-ground);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  position: relative;
}
.litho-plate-card:last-child {
  border-right: none;
}
.litho-plate-card.active-plate {
  background: var(--mint-pale);
}

.litho-stage-box {
  position: relative;
  height: 220px;
  background: #ffffff;
  border: 1px solid var(--border-hairline); /* taste-skill-ignore */
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Grid lines inside Litho Stage */
.litho-stage-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(35, 50, 45, 0.05) 1px, transparent 1px), /* taste-skill-ignore */
    linear-gradient(to bottom, rgba(35, 50, 45, 0.05) 1px, transparent 1px); /* taste-skill-ignore */
  background-size: 24px 24px;
  pointer-events: none;
}

/* Staged Ghost Hand + Primary Etched Hand */
.etched-hand-ghost {
  position: absolute;
  max-width: 78%;
  max-height: 82%;
  object-fit: contain;
  opacity: 0.22;
  filter: sepia(40%) hue-rotate(115deg) saturate(160%);
  pointer-events: none;
}

.etched-hand-primary {
  position: relative;
  z-index: 2;
  max-width: 78%;
  max-height: 82%;
  object-fit: contain;
  pointer-events: none;
}

/* Staged Keyframe Movement for Etched Hands */
@keyframes stageSwipeHand {
  0% { transform: translateX(26px); }
  55% { transform: translateX(-28px); }
  100% { transform: translateX(26px); }
}

@keyframes stagePullHand {
  0% { transform: translateY(18px); }
  55% { transform: translateY(-20px); }
  100% { transform: translateY(18px); }
}

@keyframes stageScrubHand {
  0% { transform: translate(-18px, 10px); }
  50% { transform: translate(22px, -12px); }
  100% { transform: translate(-18px, 10px); }
}

.anim-swipe {
  animation: stageSwipeHand 2.8s var(--ease-in-out) infinite;
}
.anim-pull {
  animation: stagePullHand 2.8s var(--ease-in-out) infinite;
}
.anim-scrub {
  animation: stageScrubHand 3.2s var(--ease-in-out) infinite;
}

.litho-vector-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  pointer-events: none;
}

.gesture-sandbox-bar {
  padding: 18px 24px;
  background: var(--bg-step-1);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 20px;
  align-items: center;
}

.sandbox-pad {
  border: 1.5px dashed var(--accent-green);
  background: var(--bg-ground);
  padding: 16px 20px;
  cursor: grab;
  user-select: none;
  touch-action: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* ==========================================================================
   Site Footer (Full-Width Wordmark Close)
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--ink); /* taste-skill-ignore */
  background: var(--bg-ground);
  padding: 48px 0 36px;
  margin-top: auto;
}

.footer-top-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.footer-wordmark {
  font-size: clamp(2.8rem, 7vw, 6.2rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.92;
  color: var(--ink);
  border-top: 1px solid var(--border-hairline); /* taste-skill-ignore */
  padding-top: 20px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Responsive Breakpoints (1440px -> 768px Tablet -> 390px Mobile)
   ========================================================================== */
@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .reader-workspace-grid {
    grid-template-columns: 1fr;
  }
  .reader-scan-panel {
    position: relative;
    top: 0;
  }
  .gesture-plates-grid {
    grid-template-columns: 1fr;
  }
  .litho-plate-card {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  }
  .catalogue-layout {
    grid-template-columns: 1fr;
  }
  .catalogue-sidebar {
    position: relative;
    top: 0;
  }
  .titan-trigger {
    grid-template-columns: 44px 1fr auto;
  }
  .titan-summary {
    grid-column: 2 / -1;
  }
  .titan-body {
    padding-left: 20px;
  }
  .titan-workbench-grid,
  .survey-box,
  .gesture-sandbox-bar {
    grid-template-columns: 1fr;
  }
  .search-toolbar-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  .header-inner {
    padding: 0 14px;
    height: auto;
    min-height: 58px;
    padding-top: 8px;
    padding-bottom: 8px;
    flex-wrap: wrap;
  }
  .container {
    padding: 0 14px;
  }
  .primary-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
    order: 3;
  }
  .nav-link {
    padding: 6px 10px;
    font-size: 0.8rem;
  }
  .heron-stage {
    grid-template-columns: 1fr;
    height: auto;
  }
  .heron-folio-pane {
    height: 260px;
    border-right: none;
    border-bottom: 1px solid var(--border-hairline); /* taste-skill-ignore */
  }
  .passage-bilingual-grid,
  .result-bilingual-pair {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .work-row-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .search-toolbar-grid {
    grid-template-columns: 1fr;
  }
  .survey-box {
    padding: 22px 18px;
  }
}