/* Bridgeproof: Calm cream paper, Prussian ink, terracotta coral accents */
@font-face {
  font-family: 'Geist';
  src: url('https://musechain.io/fonts/geist/geist-latin-wght-normal.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg-cream: #faf7f0;
  --bg-subtle: #f2eee2;
  --card-bg: #ffffff;
  --ink-blue: #142838;
  --ink-muted: #536778;
  --ink-faint: #8fa0b0;
  --coral: #e45738;
  --coral-light: #fbeee9;
  --border-line: #dcd4c3;
  --border-heavy: #b8ac95;
  --accent-blue: #1e527d;
  --accent-blue-light: #edf4fa;
  --font-main: 'Geist', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  background-color: var(--bg-cream);
  color: var(--ink-blue);
  font-family: var(--font-main);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  background-image: 
    radial-gradient(var(--border-line) 0.75px, transparent 0.75px);
  background-size: 20px 20px;
}

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.masthead {
  border-bottom: 1px solid var(--border-line);
  background: rgba(250, 247, 240, 0.94);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.85rem 0;
}

.mast-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--ink-blue);
}

.mini-bridge {
  width: 32px;
  height: 20px;
  color: var(--coral);
}

.site-title {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 0.8rem;
  color: var(--ink-muted);
  border-left: 1px solid var(--border-heavy);
  padding-left: 0.75rem;
  font-family: var(--font-mono);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  transition: all 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--ink-blue);
  background-color: var(--bg-subtle);
}

.author-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem !important;
  color: var(--coral) !important;
  border: 1px dashed var(--coral);
}

/* Hero Section */
.hero-block {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: 2.5rem 0 1.5rem;
}

.hero-block.mini {
  grid-template-columns: 1fr;
  padding: 2rem 0 1rem;
}

.pill-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--coral-light);
  color: var(--coral);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

h1 {
  font-size: 2.3rem;
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 800;
  color: var(--ink-blue);
  margin-bottom: 0.85rem;
}

.lede {
  font-size: 1.05rem;
  color: var(--ink-muted);
  line-height: 1.5;
}

.hero-illustration {
  text-align: right;
}

.cover-art {
  width: 100%;
  max-width: 380px;
  border-radius: 8px;
  border: 1px solid var(--border-heavy);
  box-shadow: 0 4px 16px rgba(20, 40, 56, 0.08);
  background: var(--card-bg);
}

/* Blueprint Card & Exploded SVG */
.blueprint-card {
  background: var(--card-bg);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  padding: 1rem;
  margin: 1.5rem 0 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.blueprint-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px dashed var(--border-line);
  padding-bottom: 0.5rem;
  margin-bottom: 0.75rem;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.status-dot {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--coral);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.status-dot::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--coral);
  border-radius: 50%;
}

.exploded-svg {
  width: 100%;
  height: auto;
  display: block;
}

.svg-panel {
  stroke-width: 1.2;
}
.coral-tint {
  fill: #fff7f4;
  stroke: var(--coral);
}
.blue-tint {
  fill: #f4f8fc;
  stroke: var(--accent-blue);
}
.svg-txt-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  fill: var(--ink-blue);
}
.svg-txt-sub {
  font-family: var(--font-main);
  font-size: 11px;
  fill: var(--ink-muted);
}
.trace-line {
  stroke: var(--ink-faint);
  stroke-width: 1.2;
}
.trace-line.dashed {
  stroke-dasharray: 4 3;
}
.svg-dot {
  fill: var(--coral);
}
.arch-main {
  stroke: var(--ink-blue);
  stroke-width: 2.5;
}
.suspension-wire {
  stroke: var(--border-heavy);
  stroke-width: 1.2;
}
.suspension-wire.prime {
  stroke: var(--coral);
  stroke-width: 2;
}
.deck-line {
  stroke: var(--ink-blue);
  stroke-width: 2;
}
.keystone-glow {
  fill: var(--coral);
}
.svg-keystone-lbl {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  fill: var(--coral);
}
.svg-small-note {
  font-family: var(--font-mono);
  font-size: 8.5px;
  fill: var(--ink-muted);
  letter-spacing: 0.04em;
}

/* Tool Panel */
.tool-panel {
  background: var(--card-bg);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.panel-header {
  margin-bottom: 1.25rem;
}

.panel-header h2 {
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.presets-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-muted);
}

.chip-btn {
  background: var(--bg-subtle);
  border: 1px solid var(--border-line);
  border-radius: 4px;
  padding: 0.25rem 0.6rem;
  font-size: 0.8rem;
  color: var(--ink-blue);
  cursor: pointer;
  transition: all 0.15s ease;
}

.chip-btn:hover {
  background: var(--accent-blue-light);
  border-color: var(--accent-blue);
}

.clash-grid {
  display: grid;
  grid-template-columns: 1fr 140px 1fr;
  gap: 1.25rem;
  align-items: stretch;
}

.clash-column {
  background: var(--bg-cream);
  border: 1px solid var(--border-line);
  border-radius: 6px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.col-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.speaker-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  text-transform: uppercase;
}

.tag-a {
  background: var(--coral-light);
  color: var(--coral);
}

.tag-b {
  background: var(--accent-blue-light);
  color: var(--accent-blue);
}

.speaker-name {
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px dashed transparent;
  background: transparent;
  color: var(--ink-blue);
  padding: 0.15rem 0.3rem;
  width: 100%;
}
.speaker-name:focus {
  border-color: var(--border-heavy);
  outline: none;
  background: #fff;
}

.input-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-muted);
}

textarea {
  width: 100%;
  font-family: var(--font-main);
  font-size: 0.9rem;
  line-height: 1.45;
  border: 1px solid var(--border-line);
  border-radius: 4px;
  padding: 0.65rem;
  background: #fff;
  color: var(--ink-blue);
  resize: vertical;
}

textarea:focus {
  outline: 2px solid var(--accent-blue);
  border-color: transparent;
}

.meta-inputs {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.input-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--ink-muted);
  margin-bottom: 0.2rem;
}

select {
  width: 100%;
  padding: 0.4rem;
  border: 1px solid var(--border-line);
  border-radius: 4px;
  background: #fff;
  font-size: 0.85rem;
  color: var(--ink-blue);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--coral);
}

.val-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--coral);
}

.center-fulcrum {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-align: center;
}

.fulcrum-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-subtle);
  border: 1px solid var(--border-heavy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--coral);
}

.action-btn {
  background: var(--coral);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  border-radius: 6px;
  padding: 0.65rem 1rem;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(228, 87, 56, 0.3);
  transition: transform 0.1s ease, background 0.15s ease;
  width: 100%;
}
.action-btn:hover {
  background: #cf4325;
  transform: translateY(-1px);
}
.action-btn:active {
  transform: translateY(1px);
}

.sub-hint {
  font-size: 0.7rem;
  color: var(--ink-faint);
  line-height: 1.2;
}

/* Map Output Section */
.map-results {
  background: var(--card-bg);
  border: 1px solid var(--border-heavy);
  border-radius: 8px;
  padding: 1.75rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 4px 18px rgba(0,0,0,0.04);
}

.map-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 1rem;
  margin-bottom: 1.25rem;
}

.map-header h2 {
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}

.action-tools {
  display: flex;
  gap: 0.5rem;
}

.secondary-btn {
  background: var(--bg-cream);
  border: 1px solid var(--border-heavy);
  border-radius: 4px;
  padding: 0.4rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-blue);
  cursor: pointer;
}
.secondary-btn:hover {
  background: var(--bg-subtle);
}

.metric-ribbon {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.metric-card {
  background: var(--bg-cream);
  border: 1px solid var(--border-line);
  border-radius: 6px;
  padding: 0.75rem;
  text-align: center;
}

.metric-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--coral);
}

.metric-desc {
  font-size: 0.75rem;
  color: var(--ink-muted);
}

/* Stratums */
.epistemic-canvas {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.canvas-stratum {
  border: 1px solid var(--border-line);
  border-radius: 6px;
  padding: 1.1rem;
  background: #ffffff;
}

.highlight-stratum {
  background: #fcfaee;
  border-color: #d8c78c;
}

.keystone-stratum {
  background: #fff8f5;
  border-color: #f0c3b6;
}

.stratum-label {
  margin-bottom: 0.75rem;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--coral);
  margin-right: 0.4rem;
}

.stratum-label strong {
  font-size: 0.95rem;
  color: var(--ink-blue);
}

.stratum-label p {
  font-size: 0.8rem;
  color: var(--ink-muted);
  margin-top: 0.15rem;
}

.claims-dual-deck {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.claims-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.claim-item {
  background: var(--bg-cream);
  border: 1px solid var(--border-line);
  border-radius: 4px;
  padding: 0.6rem 0.75rem;
  font-size: 0.85rem;
}

.claim-type-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  padding: 0.1rem 0.35rem;
  border-radius: 2px;
  margin-bottom: 0.35rem;
}
.type-claim { background: #e3eff9; color: #185285; }
.type-value { background: #fbeee9; color: #bf3f22; }

.shared-tags-box {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.shared-pill {
  background: #ffffff;
  border: 1px solid #c9b980;
  border-radius: 20px;
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
  color: var(--ink-blue);
  font-weight: 500;
}

.axiom-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  font-size: 0.85rem;
}

.axiom-card {
  background: var(--bg-cream);
  border-left: 3px solid var(--coral);
  padding: 0.6rem 0.8rem;
}

.falsify-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.falsify-box {
  background: #ffffff;
  border: 1px solid #eec0b5;
  border-radius: 6px;
  padding: 0.85rem;
}

.falsify-box h4 {
  font-size: 0.85rem;
  color: var(--coral);
  margin-bottom: 0.35rem;
}

.falsify-box p {
  font-size: 0.85rem;
  font-style: italic;
  color: var(--ink-blue);
  line-height: 1.4;
}

/* Shareable Card */
.share-card-wrap {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px dashed var(--border-line);
}

.share-card {
  background: #ffffff;
  border: 2px solid var(--ink-blue);
  box-shadow: 4px 4px 0px var(--border-heavy);
  border-radius: 6px;
  padding: 1.25rem;
}

.card-top {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 0.4rem;
  margin-bottom: 0.6rem;
}

.card-top .mono {
  font-size: 0.7rem;
}

.card-summary {
  font-size: 0.9rem;
  margin: 0.5rem 0;
  color: var(--ink-muted);
}

.card-keystone-quote {
  background: var(--bg-cream);
  border-left: 3px solid var(--coral);
  padding: 0.6rem 0.75rem;
  font-size: 0.82rem;
  margin: 0.75rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--ink-faint);
  margin-top: 0.75rem;
}

/* Arena & Timer Page */
.prompts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 0.75rem;
}

.prompt-card {
  background: var(--bg-cream);
  border: 1px solid var(--border-line);
  border-radius: 6px;
  padding: 0.85rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
}
.prompt-card:hover {
  background: #ffffff;
  border-color: var(--border-heavy);
  transform: translateY(-2px);
}

.prompt-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--coral);
  display: block;
  margin-bottom: 0.3rem;
}

.prompt-card h4 {
  font-size: 0.9rem;
  line-height: 1.3;
  margin-bottom: 0.3rem;
}

.prompt-snip {
  font-size: 0.78rem;
  color: var(--ink-muted);
}

.arena-timer-box {
  background: var(--card-bg);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.arena-state-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
}

.current-turn-label {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
}
.turn-a { background: var(--coral-light); color: var(--coral); }
.turn-b { background: var(--accent-blue-light); color: var(--accent-blue); }

.round-counter {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.timer-display-wrap {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 2rem;
}

.timer-ring {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto;
}

.ring-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-bg {
  fill: none;
  stroke: var(--bg-subtle);
  stroke-width: 10;
}

.ring-fill {
  fill: none;
  stroke: var(--coral);
  stroke-width: 10;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.9s linear;
}

.timer-time {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--ink-blue);
}

.timer-instructions h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.timer-instructions p {
  color: var(--ink-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.timer-btns {
  display: flex;
  gap: 0.6rem;
}

.scratchpad-section {
  border-top: 1px dashed var(--border-line);
  padding