:root {
  --bg-dark: #080c14;
  --bg-card: #0e1626;
  --bg-elevated: #152238;
  --bg-hover: #1c2d4a;
  --border-subtle: #19273f;
  --border-card: #263857;
  --border-active: #0284c7;

  --accent-cyan: #0ea5e9;
  --accent-blue: #2563eb;
  --accent-purple: #9333ea;
  --accent-green: #059669;
  --accent-red: #dc2626;
  --accent-yellow: #d97706;

  --color-bid: #10b981;
  --color-bid-bg: rgba(16, 185, 129, 0.12);
  --color-ask: #f43f5e;
  --color-ask-bg: rgba(244, 63, 94, 0.12);

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* --- Top Navigation Header --- */
.navbar {
  background: #0b111e;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border: 1px solid var(--border-card);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

.brand-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--text-main);
}

.brand-subtitle {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.nav-tabs {
  display: flex;
  gap: 0.35rem;
  background: var(--bg-dark);
  padding: 0.25rem;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  color: var(--text-main);
  background: var(--bg-card);
}

.tab-btn.active {
  background: var(--bg-elevated);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  font-weight: 600;
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  color: var(--color-bid);
  font-family: var(--font-mono);
}

.nav-status.offline {
  background: rgba(217, 119, 6, 0.08);
  border-color: rgba(217, 119, 6, 0.25);
  color: var(--accent-yellow);
}

.status-indicator {
  width: 6px;
  height: 6px;
  background: var(--color-bid);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--color-bid);
}

.nav-status.offline .status-indicator {
  background: var(--accent-yellow);
  box-shadow: 0 0 6px var(--accent-yellow);
}

/* --- Content Wrapper & Tabs --- */
.content-wrapper {
  max-width: 1480px;
  margin: 1.5rem auto;
  padding: 0 1.5rem;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.15s ease-out;
}

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

/* ========================================================= */
/* TAB 1: PIPELINE LIFECYCLE STYLES                          */
/* ========================================================= */

.scenario-cards-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.scenario-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 1rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.scenario-card:hover {
  background: var(--bg-elevated);
  border-color: var(--border-active);
}

.scenario-card.active {
  background: #111c30;
  border-color: var(--accent-cyan);
  box-shadow: inset 0 0 0 1px var(--accent-cyan);
}

.sc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.sc-badge {
  font-size: 0.65rem;
  font-weight: 700;
  font-family: var(--font-mono);
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  text-transform: uppercase;
}

.sc-badge.blue { background: rgba(14, 165, 233, 0.15); color: var(--accent-cyan); }
.sc-badge.green { background: rgba(16, 185, 129, 0.15); color: var(--color-bid); }
.sc-badge.yellow { background: rgba(217, 119, 6, 0.15); color: var(--accent-yellow); }
.sc-badge.purple { background: rgba(147, 51, 234, 0.15); color: var(--accent-purple); }

.sc-metric {
  font-size: 0.65rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.sc-title {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--text-main);
}

.sc-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.35;
}

/* Pipeline Hero Card */
.pipeline-hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.pipeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
}

.pipeline-title-group h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 0.2rem;
}

.step-counter-badge {
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  background: var(--bg-elevated);
  border: 1px solid var(--border-card);
  color: var(--accent-cyan);
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  letter-spacing: 0.5px;
}

.story-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ctrl-btn-outline {
  background: var(--bg-elevated);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}

.ctrl-btn-outline:hover {
  background: var(--bg-hover);
  border-color: var(--border-active);
}

.ctrl-btn-primary {
  background: var(--bg-elevated);
  border: 1px solid var(--border-active);
  color: var(--accent-cyan);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.95rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}

.ctrl-btn-primary:hover {
  background: var(--border-active);
  color: #fff;
}

.ctrl-btn-accent {
  background: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
  color: #000;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.4rem 1.1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}

.ctrl-btn-accent:hover {
  background: #38bdf8;
}

.speed-pill {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-left: 0.5rem;
}

.speed-pill select {
  background: var(--bg-elevated);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  font-family: var(--font-mono);
  padding: 0.3rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
}

/* Horizontal Stages Track */
.stages-track {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 1rem 0 1.75rem 0;
  position: relative;
  padding: 0 1.5rem;
}

.track-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 2;
}

.node-circle {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-dim);
  margin-bottom: 0.4rem;
  transition: all 0.2s ease;
}

.track-node.active .node-circle {
  background: var(--accent-cyan);
  border-color: #fff;
  color: #000;
  box-shadow: 0 0 10px rgba(14, 165, 233, 0.4);
}

.node-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.track-node.active .node-label {
  color: var(--accent-cyan);
}

.node-sub {
  font-size: 0.65rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.track-line {
  flex: 1;
  height: 2px;
  background: var(--border-subtle);
  margin: 0 0.85rem;
  margin-bottom: 1.6rem;
  transition: all 0.2s ease;
}

.track-line.filled {
  background: var(--accent-cyan);
}

/* Animated Traveling Order Packet */
.packet-stage-container {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #090f1a;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  margin-bottom: 1.25rem;
}

.order-packet-card {
  background: var(--bg-elevated);
  border: 1px solid var(--accent-cyan);
  border-radius: 6px;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.packet-tag {
  background: rgba(16, 185, 129, 0.2);
  color: var(--color-bid);
  border: 1px solid var(--color-bid);
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
}

.packet-tag.sell {
  background: rgba(244, 63, 94, 0.2);
  color: var(--color-ask);
  border-color: var(--color-ask);
}

.packet-id {
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.packet-details {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.packet-state {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  background: var(--bg-dark);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--border-card);
  color: var(--accent-cyan);
}

/* Narrative Box */
.narrative-box {
  background: #0b1220;
  border: 1px solid var(--border-card);
  border-left: 3px solid var(--accent-cyan);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

.narrative-main h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
  color: var(--text-main);
}

.narrative-main p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.narrative-tech-badge {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 4px;
  padding: 0.5rem 0.85rem;
  text-align: right;
  flex-shrink: 0;
}

.tech-label {
  font-size: 0.65rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tech-val {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

/* Dual Grid: Order Book & Hash Index */
.story-dual-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.25rem;
}

.panel-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 1.25rem;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.5rem;
}

.panel-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.panel-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
  line-height: 1.4;
}

.badge-blue {
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.3);
  color: var(--accent-cyan);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-family: var(--font-mono);
}

.badge-green {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--color-bid);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-family: var(--font-mono);
}

.badge-purple {
  background: rgba(147, 51, 234, 0.1);
  border: 1px solid rgba(147, 51, 234, 0.3);
  color: var(--accent-purple);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-family: var(--font-mono);
}

.book-columns-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.col-head {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  letter-spacing: 0.5px;
  font-family: var(--font-mono);
}

.col-head.green { color: var(--color-bid); }
.col-head.red { color: var(--color-ask); }

.levels-container {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-height: 140px;
}

.level-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 0.5rem;
  transition: all 0.2s;
}

.level-box.bid { border-left: 3px solid var(--color-bid); }
.level-box.ask { border-left: 3px solid var(--color-ask); }

.level-top-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-bottom: 0.3rem;
}

.level-box.bid .level-top-row .price { color: var(--color-bid); }
.level-box.ask .level-top-row .price { color: var(--color-ask); }

.order-pills-row {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.order-pill {
  background: var(--bg-dark);
  border: 1px solid var(--border-card);
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.hash-index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.4rem;
}

.hash-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.45rem 0.7rem;
  border-radius: 4px;
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  font-family: var(--font-mono);
}

.hash-item .key { color: var(--accent-purple); font-weight: 700; }
.hash-item .ptr { color: var(--accent-cyan); }

/* ========================================================= */
/* TAB 2: LIVE ORDER ENTRY & MARKET DATA STYLES              */
/* ========================================================= */
.terminal-three-col-grid {
  display: grid;
  grid-template-columns: 320px 1.2fr 1fr;
  gap: 1.25rem;
}

.order-entry-form {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.form-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.side-toggle-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.side-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.45rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.side-btn.buy:hover, .side-btn.buy.active {
  background: var(--color-bid);
  border-color: var(--color-bid);
  color: #000;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.4);
}

.side-btn.sell:hover, .side-btn.sell.active {
  background: var(--color-ask);
  border-color: var(--color-ask);
  color: #fff;
  box-shadow: 0 0 10px rgba(244, 63, 94, 0.4);
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.form-input {
  background: var(--bg-dark);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  padding: 0.45rem 0.6rem;
  border-radius: 4px;
  width: 100%;
}

.form-input.mono {
  font-family: var(--font-mono);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
}

.btn-submit-order {
  border: none;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
  margin-top: 0.2rem;
}

.btn-submit-order.buy {
  background: var(--color-bid);
  color: #000;
}

.btn-submit-order.buy:hover {
  background: #34d399;
}

.btn-submit-order.sell {
  background: var(--color-ask);
  color: #fff;
}

.btn-submit-order.sell:hover {
  background: #fb7185;
}

.quick-actions-bar {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.2rem;
}

.quick-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.25rem 0.45rem;
  border-radius: 3px;
  cursor: pointer;
  flex: 1;
  text-align: center;
}

.quick-btn:hover {
  background: var(--bg-hover);
  color: var(--text-main);
  border-color: var(--accent-cyan);
}

.quick-btn.sweep {
  color: var(--accent-cyan);
  border-color: rgba(14, 165, 233, 0.4);
}

.ingress-console {
  background: #080d17;
  border: 1px solid var(--border-card);
  border-radius: 4px;
  padding: 0.5rem;
  min-height: 55px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-top: 0.75rem;
}

.console-line.text-muted { color: var(--text-dim); }
.console-line.success { color: var(--color-bid); }
.console-line.fill { color: var(--accent-cyan); }
.console-line.cancel { color: var(--accent-purple); }

.terminal-right-column {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.dom-table-wrapper {
  overflow-x: auto;
}

.modern-dom-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.modern-dom-table th {
  text-align: right;
  padding: 0.5rem 0.75rem;
  color: var(--text-dim);
  font-size: 0.65rem;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-card);
}

.modern-dom-table th:first-child { text-align: left; }

.modern-dom-table td {
  padding: 0.45rem 0.75rem;
  text-align: right;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.modern-dom-table td:first-child { text-align: left; }

.dom-bar-cell {
  position: relative;
  width: 110px;
}

.dom-depth-bar {
  height: 12px;
  border-radius: 2px;
  transition: width 0.15s ease;
}

.dom-depth-bar.ask { background: var(--color-ask-bg); border-right: 2px solid var(--color-ask); }
.dom-depth-bar.bid { background: var(--color-bid-bg); border-right: 2px solid var(--color-bid); }

.btn-dom-cancel {
  background: transparent;
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: var(--color-ask);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  cursor: pointer;
}

.btn-dom-cancel:hover {
  background: var(--color-ask);
  color: #fff;
}

.last-price-badge {
  font-size: 1.1rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-bid);
}

.chart-wrapper {
  padding: 0.25rem 0;
}

.tape-wrapper {
  max-height: 200px;
  overflow-y: hidden;
}

.modern-tape-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.modern-tape-item {
  background: var(--bg-elevated);
  padding: 0.35rem 0.65rem;
  border-radius: 4px;
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  font-family: var(--font-mono);
}

/* ========================================================= */
/* TAB 3: BENCHMARK SUITE STYLES                             */
/* ========================================================= */
.benchmark-container {
  max-width: 960px;
  margin: 0 auto;
}

.benchmark-hero {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  margin-bottom: 1.5rem;
}

.benchmark-hero h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.benchmark-hero p {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 1.25rem auto;
}

.btn-hero-benchmark {
  background: var(--accent-cyan);
  border: none;
  color: #000;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.7rem 1.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-hero-benchmark:hover {
  background: #38bdf8;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 1.25rem;
  text-align: center;
}

.metric-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
}

.metric-val {
  font-size: 1.35rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-main);
}

.metric-val .unit { font-size: 0.75rem; color: var(--text-dim); }
.metric-val.highlight { color: var(--accent-cyan); }
.metric-val.green { color: var(--color-bid); }

.metric-sub {
  font-size: 0.65rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* ========================================================= */
/* TAB 4: ARCHITECTURE WHITE PAPER STYLES                    */
/* ========================================================= */
.whitepaper-doc {
  max-width: 1000px;
  margin: 0 auto;
}

.whitepaper-doc h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.whitepaper-doc p.lead {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.wp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.wp-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 1.25rem;
}

.wp-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

.wp-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin-bottom: 0.6rem;
}

.math-box {
  background: var(--bg-dark);
  border: 1px solid var(--border-card);
  padding: 0.6rem 0.85rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-bid);
  text-align: center;
  margin: 0.6rem 0;
}

.code-box {
  background: var(--bg-dark);
  border: 1px solid var(--border-card);
  padding: 0.5rem 0.85rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-purple);
  margin: 0.6rem 0;
}