:root {
  --sf-green: #00a650; --sf-green-dark: #007a3b; --sf-green-light: #e8f7ef;
  --sf-orange: #ff6600; --sf-red: #e02020; --sf-text: #1a1a1a;
  --sf-muted: #666; --sf-border: #e0e0e0; --sf-bg: #f5f5f5;
  --sf-card: #fff; --sf-radius: 8px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Roboto", sans-serif; background: var(--sf-bg); color: var(--sf-text); font-size: 14px; line-height: 1.6; }

/* Hero */
.hero { background: var(--sf-green); color: #fff; padding: 16px 20px 14px; }
.hero-top { display: flex; align-items: baseline; gap: 10px; margin-bottom: 4px; }
.hero-logo { font-size: 18px; font-weight: 700; }
.hero-logo span { color: rgba(255,255,255,.7); font-weight: 400; }
.hero-tag { background: rgba(255,255,255,.2); border-radius: 4px; padding: 2px 8px; font-size: 11px; }
.hero-note { font-size: 12px; color: rgba(255,255,255,.75); }

/* Layout */
.page { max-width: 860px; margin: 0 auto; padding: 28px 16px 60px; }
section { margin-bottom: 40px; }
.muted { color: var(--sf-muted); }

/* Intro */
.intro-section { }
.section-title { font-size: 16px; font-weight: 700; color: var(--sf-green-dark); margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.section-title::before { content: ""; display: inline-block; width: 4px; height: 18px; background: var(--sf-green); border-radius: 2px; }
.intro-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-bottom: 20px; }
.intro-card { background: var(--sf-card); border: 1px solid var(--sf-border); border-radius: var(--sf-radius); padding: 14px; display: flex; gap: 12px; align-items: flex-start; }
.intro-icon { font-size: 22px; flex-shrink: 0; }
.intro-card strong { display: block; margin-bottom: 3px; }
.intro-card .muted { font-size: 12px; }

/* Stack compare */
.stack-compare { display: flex; align-items: center; gap: 20px; background: var(--sf-card); border: 1px solid var(--sf-border); border-radius: var(--sf-radius); padding: 16px 20px; }
.stack-col { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.stack-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 4px; color: var(--sf-muted); }
.stack-boxes { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.stack-box { background: #f0f0f0; border: 1px solid var(--sf-border); border-radius: 5px; padding: 5px 14px; font-size: 12px; font-weight: 600; }
.green-box { background: var(--sf-green-light); border-color: var(--sf-green); color: var(--sf-green-dark); padding: 14px 20px; text-align: center; font-size: 14px; }
.stack-arrow { font-size: 16px; color: var(--sf-muted); }
.stack-vs { font-size: 22px; color: var(--sf-green); font-weight: 700; }

/* Steps */
.step-header { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.step-num { width: 28px; height: 28px; border-radius: 50%; background: var(--sf-green); color: #fff; font-weight: 700; font-size: 14px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.step-title { font-size: 16px; font-weight: 700; color: var(--sf-green-dark); }
.step-desc { font-size: 13px; color: var(--sf-muted); margin-bottom: 14px; }

/* Code block */
.code-block { background: #0b1120; border-radius: var(--sf-radius); overflow: hidden; margin-bottom: 14px; }
.code-header { background: #1a2535; padding: 8px 14px; display: flex; align-items: center; justify-content: space-between; }
.code-lang { font-size: 11px; color: #7a8a9a; font-family: monospace; }
.code-block pre { padding: 14px; overflow-x: auto; }
.code-block code { font-family: "JetBrains Mono", "Fira Code", monospace; font-size: 12px; line-height: 1.7; color: #c9d1d9; }
.c { color: #ff7b72; } .dec { color: #d2a8ff; } .cls { color: #ffa657; }
.fn { color: #79c0ff; } .str { color: #a5d6ff; } .cm { color: #6a737d; font-style: italic; }

/* Terminal */
.terminal-block { background: #0d1117; border: 1px solid #30363d; border-radius: var(--sf-radius); overflow: hidden; margin-bottom: 14px; }
.term-header { background: #161b22; padding: 8px 14px; display: flex; align-items: center; justify-content: space-between; }
.term-title { font-family: monospace; font-size: 12px; color: #8b949e; }
.run-btn { background: var(--sf-green); color: #fff; border: none; border-radius: 5px; padding: 5px 14px; font-size: 12px; font-weight: 600; cursor: pointer; transition: background .15s; }
.run-btn:hover { background: var(--sf-green-dark); }
.run-btn:disabled { background: #444; cursor: default; }
.term-output { padding: 12px 14px; font-family: monospace; font-size: 12px; color: #c9d1d9; line-height: 1.6; min-height: 36px; white-space: pre-wrap; word-break: break-all; }
.term-prompt { color: #6a737d; }
.ok { color: #3fb950; } .err { color: #f85149; } .val { color: #79c0ff; } .key { color: #d2a8ff; }

/* Event editor */
.event-editor { background: var(--sf-card); border: 1px solid var(--sf-border); border-radius: var(--sf-radius); padding: 14px; margin-bottom: 14px; display: flex; flex-direction: column; gap: 10px; }
.field-row { display: flex; align-items: center; gap: 12px; }
.field-row label { font-size: 12px; font-weight: 600; color: var(--sf-muted); width: 90px; flex-shrink: 0; font-family: monospace; }
.ev-input { flex: 1; border: 1px solid var(--sf-border); border-radius: 5px; padding: 6px 10px; font-size: 13px; font-family: monospace; background: var(--sf-bg); }
.ev-input:focus { outline: none; border-color: var(--sf-green); }

/* Entity tabs */
.entity-tabs { display: flex; gap: 8px; }
.tab-btn { border: 2px solid var(--sf-border); background: var(--sf-card); border-radius: 20px; padding: 5px 14px; font-size: 13px; cursor: pointer; transition: all .15s; }
.tab-btn:hover { border-color: var(--sf-green); }
.tab-btn.active { border-color: var(--sf-green); background: var(--sf-green-light); color: var(--sf-green-dark); font-weight: 600; }

/* Feature table (Step 3 result) */
.feat-table { width: 100%; border-collapse: collapse; margin-bottom: 8px; font-size: 12px; background: #161b22; border-radius: 5px; overflow: hidden; }
.feat-table thead th { background: #1f262d; color: #8b949e; font-weight: 600; padding: 6px 10px; text-align: left; font-size: 10px; text-transform: uppercase; letter-spacing: .5px; border-bottom: 1px solid #30363d; }
.feat-table tbody td { padding: 6px 10px; border-bottom: 1px solid #21262d; vertical-align: middle; }
.feat-table tbody tr:last-child td { border-bottom: none; }
.feat-table .ft-key   { font-family: monospace; color: #d2a8ff; white-space: nowrap; }
.feat-table .ft-label { color: #8b949e; font-size: 11px; }
.feat-table .ft-val   { font-family: monospace; color: #3fb950; font-weight: 700; text-align: right; white-space: nowrap; }
.ft-caption { font-size: 11px; color: #6a737d; margin-bottom: 10px; font-family: monospace; }
.ft-section-hd {
  font-size: 11px; color: #8b949e; font-family: monospace;
  margin: 14px 0 6px; padding-top: 10px; border-top: 1px dashed #30363d;
}
.feat-table .ft-val.err { color: #f85149; font-weight: 400; }
.ft-keystr  { color: #79c0ff; }
.ft-empty   { color: #f85149; font-size: 12px; padding: 8px 0; }
.raw-json { margin-top: 4px; }
.raw-json summary { color: #6a737d; font-size: 11px; cursor: pointer; padding: 4px 0; user-select: none; }
.raw-json summary:hover { color: #c9d1d9; }
.raw-json[open] summary { margin-bottom: 6px; }

/* Insight box */
.insight-box { background: var(--sf-green-light); border: 1px solid #c3e6d4; border-radius: var(--sf-radius); padding: 12px 16px; font-size: 13px; color: var(--sf-green-dark); margin-top: 12px; }
.insight-box strong { font-weight: 700; }

/* Live grid */
.live-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.live-card { background: var(--sf-card); border: 1px solid var(--sf-border); border-radius: var(--sf-radius); padding: 12px; }
.live-card-name { font-size: 12px; font-weight: 600; margin-bottom: 8px; }
.live-stat { display: flex; justify-content: space-between; font-size: 12px; padding: 2px 0; border-bottom: 1px solid #f0f0f0; }
.live-stat:last-child { border-bottom: none; }
.live-stat-key { color: var(--sf-muted); font-family: monospace; }
.live-stat-val { font-weight: 700; font-family: monospace; color: var(--sf-green-dark); }
.badge-hot { display: inline-block; background: var(--sf-red); color: #fff; font-size: 9px; font-weight: 700; padding: 1px 5px; border-radius: 3px; margin-left: 4px; }
.loading { color: var(--sf-muted); font-size: 13px; padding: 16px 0; }

/* Footer */
.footer-cta { background: var(--sf-green); color: #fff; border-radius: var(--sf-radius); padding: 24px 28px; margin-top: 40px; text-align: center; }
.footer-cta h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.footer-cta p { font-size: 13px; color: rgba(255,255,255,.85); margin-bottom: 16px; }
.footer-links { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.footer-btn { background: #fff; color: var(--sf-green-dark); border: none; border-radius: 6px; padding: 9px 20px; font-size: 13px; font-weight: 600; cursor: pointer; text-decoration: none; display: inline-block; }
.footer-fine { margin-top: 14px; font-size: 10px; color: rgba(255,255,255,.5); }

/* ── Main tabs (Tutorial / Marketplace) ──────────────────────────────── */
.main-tabs { display: flex; gap: 8px; margin: 0 0 24px; border-bottom: 2px solid var(--sf-border); }
.main-tab-btn {
  background: transparent; border: none; padding: 10px 18px; font-size: 14px; font-weight: 600;
  cursor: pointer; color: var(--sf-muted); border-bottom: 3px solid transparent;
  transform: translateY(2px); transition: color .15s, border-color .15s;
}
.main-tab-btn:hover { color: var(--sf-green-dark); }
.main-tab-btn.active { color: var(--sf-green-dark); border-bottom-color: var(--sf-green); }
.tab-panel[hidden] { display: none; }

/* ── Marketplace tab ─────────────────────────────────────────────────── */
.mp-intro {
  background: var(--sf-green-light); border: 1px solid #c3e6d4;
  border-radius: var(--sf-radius); padding: 12px 16px; font-size: 13px;
  color: var(--sf-green-dark); margin-bottom: 16px; line-height: 1.6;
}
.mp-intro strong { display: block; margin-bottom: 4px; font-weight: 700; }

.mp-persona-bar { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.mp-persona-label { font-size: 12px; font-weight: 600; color: var(--sf-muted); }
.mp-persona-row { display: flex; gap: 6px; flex-wrap: wrap; }
.mp-persona-btn {
  border: 1.5px solid var(--sf-border); background: var(--sf-card);
  border-radius: 18px; padding: 5px 12px; font-size: 12px; cursor: pointer;
  transition: all .15s; color: var(--sf-text);
}
.mp-persona-btn:hover { border-color: var(--sf-green); color: var(--sf-green-dark); }
.mp-persona-btn.active { border-color: var(--sf-green); background: var(--sf-green-light); color: var(--sf-green-dark); font-weight: 600; }

.mp-layout { display: grid; grid-template-columns: 200px 1fr; gap: 18px; align-items: start; }

/* Sidebar */
.mp-sidebar { background: var(--sf-card); border: 1px solid var(--sf-border); border-radius: var(--sf-radius); padding: 14px; position: sticky; top: 12px; }
.mp-side-title { font-size: 10px; font-weight: 700; color: var(--sf-muted); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 8px; }
.mp-cat-list { list-style: none; }
.mp-cat {
  padding: 7px 10px; font-size: 13px; cursor: pointer; border-radius: 5px;
  border-left: 3px solid transparent; transition: background .1s, color .1s;
  margin-bottom: 2px;
}
.mp-cat:hover { background: var(--sf-bg); color: var(--sf-green-dark); }
.mp-cat.active { background: var(--sf-green-light); color: var(--sf-green-dark); font-weight: 600; border-left-color: var(--sf-green); }

.mp-feat-panel { background: #fafafa; border-radius: 5px; padding: 8px 10px; }
.mp-feat-row { display: flex; justify-content: space-between; padding: 3px 0; font-size: 11px; border-bottom: 1px dashed #eee; }
.mp-feat-row:last-child { border-bottom: none; }
.mp-feat-row .k { color: var(--sf-muted); font-family: monospace; }
.mp-feat-row .v { color: var(--sf-green-dark); font-weight: 700; font-family: monospace; }
.mp-feat-row .v.flash { animation: feat-flash .8s ease; }
@keyframes feat-flash { 0%{background:#fff59d;color:#7a5500} 100%{background:transparent;color:var(--sf-green-dark)} }
.mp-feat-note { font-size: 10px; color: #aaa; margin-top: 6px; line-height: 1.5; }

/* Main */
.mp-main { min-width: 0; }

.mp-rec-section { background: var(--sf-card); border: 1px solid var(--sf-border); border-radius: var(--sf-radius); padding: 14px; margin-bottom: 16px; }
.mp-rec-hd { display: flex; align-items: baseline; gap: 10px; margin-bottom: 10px; }
.mp-rec-title { font-size: 14px; font-weight: 700; color: var(--sf-text); }
.mp-rec-hint { font-size: 11px; color: var(--sf-muted); }
.mp-rec-strip { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; }
.mp-rec-strip::-webkit-scrollbar { height: 4px; }
.mp-rec-strip::-webkit-scrollbar-thumb { background: #ddd; border-radius: 2px; }
.mp-rec-card {
  flex-shrink: 0; width: 110px; background: #fafafa; border: 1.5px solid var(--sf-border);
  border-radius: 6px; padding: 8px 6px; cursor: pointer; text-align: center;
  transition: border-color .15s, transform .15s;
}
.mp-rec-card:hover { border-color: var(--sf-green); transform: translateY(-2px); }
.mp-rec-card.viewed { background: var(--sf-green-light); border-color: #c3e6d4; }
.mp-rec-emoji { font-size: 26px; line-height: 1; margin-bottom: 4px; }
.mp-rec-name { font-size: 10px; font-weight: 600; color: var(--sf-text); line-height: 1.3; min-height: 26px; }
.mp-rec-price { font-size: 11px; font-weight: 700; color: var(--sf-green-dark); margin-top: 3px; }

.mp-grid-hd { display: flex; align-items: baseline; gap: 10px; margin-bottom: 10px; }
.mp-grid-title { font-size: 14px; font-weight: 700; color: var(--sf-text); }
.mp-grid-count { font-size: 12px; color: var(--sf-muted); }

.mp-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.mp-prod-card {
  background: var(--sf-card); border: 1.5px solid var(--sf-border); border-radius: 6px;
  padding: 10px; cursor: pointer; transition: border-color .15s, transform .15s, box-shadow .15s;
  position: relative; display: flex; flex-direction: column; gap: 3px;
}
.mp-prod-card:hover { border-color: var(--sf-green); transform: translateY(-2px); box-shadow: 0 3px 10px rgba(0,166,80,.12); }
.mp-prod-card.viewed { border-color: #c3e6d4; }
.mp-prod-card.flash { animation: card-flash .5s ease; }
@keyframes card-flash { 0%{background:var(--sf-green-light)} 100%{background:var(--sf-card)} }
.mp-prod-emoji { font-size: 32px; line-height: 1; margin-bottom: 3px; }
.mp-prod-name { font-size: 11px; font-weight: 600; color: var(--sf-text); line-height: 1.4; min-height: 30px; }
.mp-prod-origin { font-size: 10px; color: var(--sf-muted); }
.mp-prod-price { font-size: 13px; font-weight: 700; color: var(--sf-green-dark); margin-top: 2px; }
.mp-prod-trend { font-size: 9px; color: var(--sf-muted); font-family: monospace; }
.mp-badge-viewed {
  position: absolute; top: 6px; left: 6px; background: var(--sf-green); color: #fff;
  font-size: 8px; font-weight: 700; padding: 1px 5px; border-radius: 3px;
}

/* Live ranking formula panel */
.mp-formula {
  background: #0d1117; border: 1px solid #30363d; border-radius: var(--sf-radius);
  padding: 10px 14px; margin-bottom: 14px;
}
.mp-formula > summary {
  font-size: 12px; font-weight: 700; color: #c9d1d9; cursor: pointer; padding: 2px 0;
  list-style: none; user-select: none;
}
.mp-formula > summary::-webkit-details-marker { display: none; }
.mp-formula > summary::before { content: "▸ "; color: #8b949e; }
.mp-formula[open] > summary::before { content: "▾ "; }
.mp-formula-code {
  font-family: "JetBrains Mono", "Fira Code", monospace; font-size: 12px;
  color: #c9d1d9; line-height: 1.7; padding: 10px 0 8px; white-space: pre-wrap;
}
.mp-formula-state {
  border-top: 1px solid #30363d; padding-top: 12px;
  display: flex; flex-direction: column; gap: 10px;
}
.mp-fs-row {
  display: flex; flex-direction: column; gap: 3px; line-height: 1.5;
}
.mp-fs-row .k {
  color: #d2a8ff; font-family: monospace; font-size: 12px; font-weight: 600;
}
.mp-fs-row code {
  color: #79c0ff; font-family: monospace; font-size: 13px;
  background: #161b22; padding: 4px 8px; border-radius: 4px;
  word-break: break-word; display: block;
}

/* Per-card score + breakdown */
.mp-rec-card { position: relative; padding-top: 22px; }
.mp-rec-rank {
  position: absolute; top: 4px; left: 4px;
  font-size: 9px; font-weight: 700; color: var(--sf-muted);
  background: #f0f0f0; padding: 1px 5px; border-radius: 3px;
}
.mp-rec-score {
  position: absolute; top: 4px; right: 4px;
  font-size: 9px; color: var(--sf-muted); font-family: monospace;
}
.mp-rec-score b { color: var(--sf-green-dark); font-size: 11px; }
.mp-rec-breakdown {
  display: flex; flex-wrap: wrap; gap: 3px 6px; justify-content: center;
  font-family: monospace; font-size: 9px; margin-top: 4px; min-height: 12px;
}
.mp-part { white-space: nowrap; }
.mp-part.dim { color: #ccc; }

/* Recommendation "why" tags */
.mp-rec-why { display: flex; flex-direction: column; gap: 2px; margin-top: 5px; min-height: 14px; }
.mp-why {
  display: inline-block; font-size: 9px; font-weight: 600; padding: 1px 5px; border-radius: 3px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%;
  cursor: help;
}
.mp-why.why-cat     { background: #e3f2fd; color: #0d47a1; }
.mp-why.why-origin  { background: #fff3e0; color: #e65100; }
.mp-why.why-persona { background: #f3e5f5; color: #6a1b9a; }
.mp-why.why-explore { background: #f1f8e9; color: #33691e; }

.mp-rec-hint code { background: #f0f0f0; padding: 1px 5px; border-radius: 3px; font-size: 10px; color: var(--sf-green-dark); }

/* ── Synthetic data tab ──────────────────────────────────────────────── */
.syn-intro {
  background: #fff8e1; border: 1px solid #ffd54f; border-radius: var(--sf-radius);
  padding: 12px 16px; font-size: 13px; color: #5d4037; margin-bottom: 16px; line-height: 1.6;
}
.syn-intro strong { display: block; margin-bottom: 4px; }
.syn-intro em { color: #c62828; font-style: normal; font-weight: 600; }

.syn-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.syn-section-wide { grid-column: 1 / -1; }
@media (max-width: 800px) { .syn-grid { grid-template-columns: 1fr; } }

.syn-section { background: var(--sf-card); border: 1px solid var(--sf-border); border-radius: var(--sf-radius); padding: 14px; }
.syn-hd { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 10px; gap: 10px; }
.syn-title { font-size: 14px; font-weight: 700; color: var(--sf-text); }
.syn-meta { font-size: 11px; color: var(--sf-muted); font-family: monospace; }

.syn-tlist { display: flex; flex-direction: column; gap: 4px; }
.syn-row {
  display: flex; align-items: center; gap: 8px; padding: 6px 8px;
  background: #fafafa; border-radius: 5px; font-size: 12px;
}
.syn-rank  { font-family: monospace; font-weight: 700; color: var(--sf-green-dark); width: 26px; flex-shrink: 0; }
.syn-emoji { font-size: 18px; flex-shrink: 0; }
.syn-name  { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.syn-stats { display: flex; gap: 10px; font-family: monospace; font-size: 11px; color: var(--sf-text); flex-shrink: 0; }
.syn-stats b { color: var(--sf-green-dark); }
.syn-stats .dim { color: #999; }
.syn-loading { color: var(--sf-muted); font-size: 12px; padding: 8px; }
.syn-footer { margin-top: 12px; font-size: 11px; color: var(--sf-muted); text-align: center; font-family: monospace; }

@media (max-width: 700px) {
  .mp-layout { grid-template-columns: 1fr; }
  .mp-sidebar { position: static; }
  .syn-stats { flex-wrap: wrap; gap: 6px; }
}

@media (max-width: 600px) {
  .stack-compare { flex-direction: column; }
  .intro-grid { grid-template-columns: 1fr; }
  .entity-tabs { flex-wrap: wrap; }
}

/* ── DSP-specific additions ─────────────────────────────────────────────── */

/* Context card — load-bearing for cold inbox traffic */
.context-card { background: #fff8e1; border: 1px solid #f5d97d; border-left: 4px solid var(--sf-orange); border-radius: var(--sf-radius); padding: 14px 18px; margin-bottom: 24px; }
.ctx-eyebrow { font-size: 10px; font-weight: 700; color: #b06b00; letter-spacing: 1.5px; margin-bottom: 6px; }
.ctx-body { font-size: 13px; line-height: 1.55; color: #3a2a00; }
.ctx-body a { color: var(--sf-green-dark); font-weight: 600; }

/* Bid Simulator */
.sim-intro { background: var(--sf-card); border: 1px solid var(--sf-border); border-left: 4px solid var(--sf-green); border-radius: var(--sf-radius); padding: 12px 16px; margin-bottom: 18px; font-size: 13px; line-height: 1.6; }
.sim-section { background: var(--sf-card); border: 1px solid var(--sf-border); border-radius: var(--sf-radius); padding: 14px 16px; margin-bottom: 16px; }
.sim-panel-hd { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; gap: 10px; flex-wrap: wrap; }
.sim-panel-title { font-size: 13px; font-weight: 700; color: var(--sf-green-dark); }
.tiny-btn { background: #f0f0f0; border: 1px solid var(--sf-border); border-radius: 4px; padding: 3px 10px; font-size: 11px; cursor: pointer; color: var(--sf-muted); }
.tiny-btn:hover { background: #e5e5e5; }
.sim-req { background: #0b1120; color: #e8f7ef; font-family: "SF Mono", Menlo, monospace; font-size: 12px; padding: 12px 14px; border-radius: 6px; white-space: pre-wrap; line-height: 1.55; }
.sim-req .rk { color: #7ab8ff; } .sim-req .rv { color: #f5d97d; }
.sim-latency { font-size: 12px; color: var(--sf-muted); margin-bottom: 10px; font-family: "SF Mono", Menlo, monospace; }
.sim-latency.ok { color: var(--sf-green-dark); font-weight: 700; }
.sim-latency.err { color: var(--sf-red); font-weight: 700; }
.sim-fanout { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.sim-fanout-card { border: 1px solid var(--sf-border); border-radius: 6px; padding: 10px 12px; font-size: 12px; background: #fafafa; }
.sim-fanout-card h4 { font-size: 13px; margin-bottom: 8px; color: var(--sf-green-dark); display: flex; align-items: center; gap: 6px; }
.sim-fanout-row { display: flex; justify-content: space-between; padding: 3px 0; border-bottom: 1px dashed #eee; font-family: "SF Mono", Menlo, monospace; font-size: 11px; }
.sim-fanout-row:last-child { border-bottom: none; }
.sim-fanout-row .fk { color: var(--sf-muted); }
.sim-fanout-row .fv { font-weight: 600; }
.sim-fanout-row.fv-err .fv { color: var(--sf-red); font-style: italic; }

.sim-decisions { display: grid; gap: 8px; }
.sim-dec-card { border: 1px solid var(--sf-border); border-radius: 6px; padding: 10px 12px; background: #fafafa; }
.sim-dec-card.win { border-color: var(--sf-green); background: var(--sf-green-light); }
.sim-dec-card.lose { opacity: 0.75; }
.sim-dec-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; font-weight: 700; font-size: 13px; }
.sim-dec-verdict { font-family: "SF Mono", Menlo, monospace; font-size: 12px; padding: 2px 8px; border-radius: 4px; }
.sim-dec-verdict.win-v { background: var(--sf-green); color: #fff; }
.sim-dec-verdict.lose-v { background: #e8e8e8; color: var(--sf-muted); }
.sim-dec-clauses { display: grid; gap: 3px; font-family: "SF Mono", Menlo, monospace; font-size: 11px; }
.sim-dec-clause { display: flex; gap: 8px; align-items: center; }
.sim-dec-clause .ck { color: #14a800; flex-shrink: 0; width: 14px; }
.sim-dec-clause .cx { color: var(--sf-red); flex-shrink: 0; width: 14px; }
.sim-dec-clause .ctxt { color: var(--sf-text); }
.sim-dec-clause .cval { color: var(--sf-muted); margin-left: auto; }

.sim-record-note { font-size: 12px; color: var(--sf-muted); font-family: "SF Mono", Menlo, monospace; }
.sim-record-note.ok { color: var(--sf-green-dark); font-weight: 600; }

/* Freshness moment */
.freshness-section { border-left: 4px solid var(--sf-orange); }
.freshness-help { font-size: 11px; color: var(--sf-muted); cursor: help; }
.freshness-body { background: #0b1120; color: #e8f7ef; font-family: "SF Mono", Menlo, monospace; font-size: 12px; padding: 12px 14px; border-radius: 6px; margin-bottom: 10px; white-space: pre-wrap; line-height: 1.55; }
.freshness-body .fb-ok { color: #14a800; font-weight: 700; }
.freshness-body .fb-warn { color: #f5d97d; }
.freshness-body .fb-val { color: #f5d97d; font-weight: 700; }
.freshness-compare { width: 100%; border-collapse: collapse; font-size: 12px; }
.freshness-compare th, .freshness-compare td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--sf-border); }
.freshness-compare th { background: #f5f5f5; font-weight: 700; font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--sf-muted); }
.freshness-compare tr.fresh-beava td { background: var(--sf-green-light); font-weight: 600; }

/* Warming-up banner */
.warming-banner { background: #fff8e1; border: 1px solid #f5d97d; border-radius: var(--sf-radius); padding: 10px 14px; margin-bottom: 16px; font-size: 12px; color: #b06b00; }

/* Mobile — Bid Simulator stacks */
@media (max-width: 600px) {
  .sim-fanout { grid-template-columns: 1fr; }
  .sim-panel-hd { flex-direction: column; align-items: flex-start; }
  .freshness-compare th, .freshness-compare td { padding: 5px 6px; font-size: 11px; }
}

/* ── StackAdapt dark theme override (v2 — readability pass) ────────────
   Applied last so it overrides all earlier light-theme rules.
   Design principles:
     - Sans-serif body (Inter / system), mono only for code + terminal
     - Clear text contrast (WCAG AA against dark bg)
     - Cards distinct from page bg (#1a1a1a vs #0d0d0d)
     - Borders visible but not loud (#2e2e2e)
     - Mint (#3CC1AB) as accent on BOTH dark bg AND in dark chip.
*/

:root {
  --sf-green:       #3CC1AB;   /* mint accent — AA on #0d0d0d */
  --sf-green-bold:  #5ed5be;   /* brighter mint for emphasized headings */
  --sf-green-dark:  #25a08b;
  --sf-green-light: rgba(60, 193, 171, 0.14);
  --sf-orange:      #ffa94d;   /* cross-stream highlight + warnings */
  --sf-red:         #ff6b6b;
  --sf-text:        #f2f2f2;   /* body — AA+ */
  --sf-text-dim:    #c8c8c8;   /* secondary text */
  --sf-muted:       #9a9a9a;   /* labels, metadata */
  --sf-border:      #2e2e2e;   /* visible card borders */
  --sf-border-dim:  #1f1f1f;   /* row dividers inside cards */
  --sf-bg:          #0d0d0d;
  --sf-card:        #1a1a1a;
  --sf-card-elev:   #232323;   /* slightly elevated (inputs, sub-cards) */
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
               "Helvetica Neue", Arial, sans-serif;
  font-size: 14px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body { background: var(--sf-bg); color: var(--sf-text); }

.hero { background: #000; border-bottom: 1px solid var(--sf-green); }
.hero-logo { font-family: "SF Mono", "JetBrains Mono", Menlo, monospace; letter-spacing: -0.5px; }
.hero { background: #000; border-bottom: 1px solid var(--sf-green); }
.hero-logo { font-family: "JetBrains Mono", "SF Mono", Menlo, monospace; font-weight: 700; letter-spacing: -0.3px; font-size: 18px; }
.hero-logo span { color: var(--sf-green); margin: 0 4px; }
.hero-tag { background: var(--sf-green-light); color: var(--sf-green); border: 1px solid var(--sf-green); font-weight: 600; letter-spacing: 1px; }
.hero-note { color: var(--sf-text-dim); font-size: 13px; }

/* Headings: use mono ONLY for logo + code; keep UI headings in Inter for readability. */
.section-title, .step-title, .sim-panel-title, .syn-title,
.footer-cta h3 {
  font-family: "Inter", -apple-system, sans-serif;
  color: var(--sf-green-bold);
  font-weight: 700;
  letter-spacing: -0.2px;
}
h1, h2, h3, h4 { color: var(--sf-text); }
.section-title::before { background: var(--sf-green); }
.step-num { background: var(--sf-green); color: #000; font-weight: 700; }
.step-desc { color: var(--sf-text-dim); }

.intro-card { background: var(--sf-card); border: 1px solid var(--sf-border); color: var(--sf-text); }
.intro-card strong { color: var(--sf-text); }
.intro-card .muted { color: var(--sf-muted); }

.stack-compare { background: var(--sf-card); border: 1px solid var(--sf-border); }
.stack-box { background: var(--sf-card-elev); border: 1px solid var(--sf-border); color: var(--sf-text); font-weight: 600; }
.green-box { background: var(--sf-green-light); border: 1px solid var(--sf-green); color: var(--sf-green-bold); font-weight: 700; }
.stack-arrow { color: var(--sf-muted); }
.stack-vs { color: var(--sf-green); font-weight: 700; }
.stack-label { color: var(--sf-muted); }

.context-card {
  background: #1a1510;
  border: 1px solid #3d3119;
  border-left: 4px solid var(--sf-orange);
  color: #f4e8d0;
}
.ctx-eyebrow { color: var(--sf-orange); font-weight: 700; }
.ctx-body { color: #e8dcc4; }
.ctx-body strong { color: #fff; }
.ctx-body a { color: var(--sf-green); border-bottom: 1px dotted var(--sf-green); }
.ctx-body a:hover { color: var(--sf-green-bold); }

.main-tabs { border-bottom: 1px solid var(--sf-border); }
.main-tab-btn {
  background: transparent; color: var(--sf-muted);
  border: 1px solid transparent; border-bottom: none;
  font-weight: 600;
}
.main-tab-btn.active {
  background: var(--sf-card); color: var(--sf-green-bold);
  border-color: var(--sf-border); border-bottom-color: var(--sf-card);
}
.main-tab-btn:hover:not(.active) { color: var(--sf-text); }

.tab-btn {
  background: var(--sf-card-elev); color: var(--sf-text-dim);
  border: 1px solid var(--sf-border); font-weight: 500;
}
.tab-btn.active, .tab-btn:hover { background: var(--sf-green-light); color: var(--sf-green-bold); border-color: var(--sf-green); }

.event-editor { background: var(--sf-card); border: 1px solid var(--sf-border); }
.field-row label { color: var(--sf-text-dim); font-weight: 500; }
.ev-input {
  background: #0f0f0f; border: 1px solid #3a3a3a; color: var(--sf-text);
  font-family: "JetBrains Mono", "SF Mono", Menlo, monospace;
}
.ev-input:focus { border-color: var(--sf-green); outline: none; box-shadow: 0 0 0 2px rgba(60,193,171,0.15); }

.run-btn { background: var(--sf-green); color: #000; font-weight: 700; border: none; }
.run-btn:hover:not(:disabled) { background: var(--sf-green-bold); }
.run-btn:disabled { background: #2a2a2a; color: #555; cursor: not-allowed; }

.terminal-block { background: #000; border: 1px solid var(--sf-border); }
.term-header { background: #0d0d0d; border-bottom: 1px solid var(--sf-border); }
.term-title { color: var(--sf-muted); font-family: "JetBrains Mono", "SF Mono", Menlo, monospace; }
.term-output { color: var(--sf-text-dim); font-family: "JetBrains Mono", "SF Mono", Menlo, monospace; }
.term-prompt { color: var(--sf-muted); }
.term-output .ok { color: var(--sf-green-bold); }
.term-output .err { color: var(--sf-red); }
.term-output .val { color: #f5d97d; }
.term-output .key { color: #7cc5ff; }
.term-output .str { color: #f5d97d; }

.code-block { background: #000; border: 1px solid var(--sf-border); }
.code-header { background: #0d0d0d; border-bottom: 1px solid var(--sf-border); }
.code-lang { color: var(--sf-green-bold); font-family: "JetBrains Mono", "SF Mono", Menlo, monospace; font-weight: 600; }

/* Sim Simulator */
.sim-intro {
  background: var(--sf-card); border: 1px solid var(--sf-border);
  border-left: 4px solid var(--sf-green); color: var(--sf-text);
}
.sim-intro strong { color: var(--sf-green-bold); }
.sim-intro em { color: var(--sf-orange); font-style: normal; font-weight: 600; }
.sim-intro code {
  background: #0f0f0f; padding: 1px 6px; border-radius: 3px;
  color: #f5d97d; font-size: 12px;
}

.sim-section { background: var(--sf-card); border: 1px solid var(--sf-border); }
.sim-panel-hd { gap: 12px; }
.sim-panel-btns { display: flex; gap: 6px; flex-wrap: wrap; }

/* Reserve vertical space so sections don't cause the page to jump
   up/down as content swaps between autorun cycles. */
.sim-fanout    { min-height: 230px; }
.sim-decisions { min-height: 220px; }
.sim-req       { min-height: 130px; }
#sim-freshness { min-height: 110px; }

/* Smooth content swaps — fade-in when innerHTML updates. */
.sim-fanout, .sim-decisions, #sim-freshness, #sim-record-note {
  transition: opacity 180ms ease-out;
}

.sim-req {
  background: #000; border: 1px solid var(--sf-border);
  color: var(--sf-text-dim); padding: 14px 16px;
}
.sim-req .rk { color: #7cc5ff; }
.sim-req .rv { color: #f5d97d; }

.tiny-btn {
  background: var(--sf-card-elev); border: 1px solid var(--sf-border);
  color: var(--sf-text-dim); font-weight: 500;
}
.tiny-btn:hover:not(:disabled) {
  background: #2e2e2e; color: var(--sf-green-bold);
  border-color: var(--sf-green);
}
.tiny-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.sim-seed-note {
  font-size: 12px; color: var(--sf-text-dim); margin-top: 8px;
  font-family: "JetBrains Mono", "SF Mono", Menlo, monospace;
}
.sim-seed-note.ok { color: var(--sf-green-bold); }
.sim-seed-note.err { color: var(--sf-red); }

.sim-latency { color: var(--sf-text-dim); font-family: "JetBrains Mono", "SF Mono", Menlo, monospace; }
.sim-latency.ok { color: var(--sf-green-bold); }
.sim-latency.err { color: var(--sf-orange); }
.sim-latency strong { color: #fff; }

.sim-fanout-card {
  background: var(--sf-card-elev); border: 1px solid var(--sf-border);
  padding: 12px 14px;
}
.sim-fanout-card h4 { color: var(--sf-green-bold); font-family: "Inter", sans-serif; }
.sim-fanout-row { border-bottom: 1px dashed var(--sf-border-dim); padding: 4px 0; }
.sim-fanout-row .fk { color: var(--sf-muted); font-size: 11px; }
.sim-fanout-row .fv { color: var(--sf-text); font-weight: 600; }
.sim-fanout-row.sim-fanout-cross .fk { color: var(--sf-orange); font-weight: 700; }
.sim-fanout-row.sim-fanout-cross .fv { color: var(--sf-orange); }
.sim-fanout-row.fv-err .fv { color: var(--sf-red); font-style: italic; }

.sim-dec-card { background: var(--sf-card-elev); border: 1px solid var(--sf-border); padding: 12px 14px; }
.sim-dec-card.win {
  background: rgba(60, 193, 171, 0.08);
  border: 1px solid var(--sf-green);
  box-shadow: 0 0 0 1px var(--sf-green-light);
}
.sim-dec-head { color: var(--sf-text); font-weight: 700; }
.sim-dec-verdict.win-v { background: var(--sf-green); color: #000; font-weight: 700; }
.sim-dec-verdict.lose-v { background: #2a2a2a; color: var(--sf-muted); }
.sim-dec-clause .ck { color: var(--sf-green-bold); font-weight: 700; }
.sim-dec-clause .cx { color: var(--sf-red); font-weight: 700; }
.sim-dec-clause .ctxt { color: var(--sf-text); }
.sim-dec-clause .cval { color: var(--sf-text-dim); }

.sim-record-note { color: var(--sf-text-dim); }
.sim-record-note.ok { color: var(--sf-green-bold); }
.sim-record-note strong { color: var(--sf-orange); }

.mp-formula { background: #0f0f0f; border: 1px solid var(--sf-border); }
.mp-formula summary { color: var(--sf-green-bold); font-weight: 600; }
.mp-formula-code {
  background: #000; color: var(--sf-text);
  font-family: "JetBrains Mono", "SF Mono", Menlo, monospace;
}
.mp-formula-code .cm { color: var(--sf-muted); }
.mp-formula-code .key { color: #7cc5ff; }
.mp-formula-code .val { color: #f5d97d; }
.mp-formula-code .fn { color: var(--sf-green-bold); font-weight: 700; }

.freshness-section { border-left: 4px solid var(--sf-orange) !important; }
.freshness-help { color: var(--sf-text-dim); font-size: 11px; cursor: help; border-bottom: 1px dotted var(--sf-muted); }
.freshness-body {
  background: #000; border: 1px solid var(--sf-border);
  color: var(--sf-text); font-family: "JetBrains Mono", "SF Mono", Menlo, monospace;
}
.freshness-body .fb-ok { color: var(--sf-green-bold); font-weight: 600; }
.freshness-body .fb-warn { color: var(--sf-orange); }
.freshness-body .fb-val { color: var(--sf-green-bold); font-weight: 700; font-size: 14px; }
.freshness-compare { background: transparent; }
.freshness-compare th { background: #0d0d0d; color: var(--sf-muted); font-weight: 600; }
.freshness-compare td { border-bottom: 1px solid var(--sf-border); color: var(--sf-text); }
.freshness-compare tr.fresh-beava td { background: var(--sf-green-light); color: var(--sf-green-bold); font-weight: 700; }

.warming-banner { background: #1f1810; border: 1px solid #3d3119; color: var(--sf-orange); font-weight: 500; }

/* Synthetic firehose */
.syn-intro {
  background: var(--sf-card); border: 1px solid var(--sf-border);
  border-left: 4px solid var(--sf-green); color: var(--sf-text);
}
.syn-intro strong { color: var(--sf-green-bold); }
.syn-section { background: var(--sf-card); border: 1px solid var(--sf-border); }
.syn-hd { border-bottom: 1px solid var(--sf-border); }
.syn-meta { color: var(--sf-muted); font-family: "JetBrains Mono", "SF Mono", Menlo, monospace; font-size: 11px; }

/* Synthetic row: override the base #fafafa (light theme) bg. Dark row on
   darker page, with clear layout: name | big mint value | muted sub-text. */
.syn-row {
  background: var(--sf-card-elev);
  border: 1px solid var(--sf-border);
  border-radius: 5px;
  padding: 8px 12px;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  font-size: 13px;
  color: var(--sf-text);
}
.syn-row:hover { background: #2a2a2a; border-color: #3a3a3a; }
.syn-row-name { color: var(--sf-text); font-weight: 600; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.syn-row-val  { color: var(--sf-green-bold); font-weight: 700; font-family: "JetBrains Mono", "SF Mono", Menlo, monospace; font-size: 14px; flex-shrink: 0; }
.syn-row-sub  { color: var(--sf-muted); font-family: "JetBrains Mono", "SF Mono", Menlo, monospace; font-size: 11px; flex-shrink: 0; text-align: right; }
.syn-row.syn-row-warn { border-color: rgba(255, 107, 107, 0.35); }
.syn-row.syn-row-warn .syn-row-val { color: var(--sf-red); }
.syn-footer { color: var(--sf-muted); border-top: 1px solid var(--sf-border); font-family: "JetBrains Mono", "SF Mono", Menlo, monospace; }
.syn-loading { color: var(--sf-muted); font-style: italic; }

/* Feature table (tutorial Step 3) */
.feat-table { background: #0f0f0f; border: 1px solid var(--sf-border); }
.feat-table thead th {
  background: #0d0d0d; color: var(--sf-muted);
  border-bottom: 1px solid var(--sf-border); font-weight: 600;
}
.feat-table tbody td { border-bottom: 1px solid var(--sf-border-dim); color: var(--sf-text); }
.feat-table .ft-key { color: #c29bff; }
.feat-table .ft-label { color: var(--sf-text-dim); }
.feat-table .ft-val { color: var(--sf-green-bold); font-weight: 600; }
.feat-table .ft-val.err { color: var(--sf-red); }
.ft-section-hd { color: var(--sf-green-bold); font-weight: 600; }

.raw-json summary { color: var(--sf-green); cursor: pointer; font-family: "Inter", sans-serif; }
.raw-json { color: var(--sf-text-dim); font-family: "JetBrains Mono", "SF Mono", Menlo, monospace; }

details, details summary { color: var(--sf-text); }

.footer-cta { background: var(--sf-card); border: 1px solid var(--sf-border); color: var(--sf-text); }
.footer-cta h3 { color: var(--sf-green-bold); }
.footer-cta p { color: var(--sf-text-dim); }
.footer-btn { background: var(--sf-green); color: #000; font-weight: 700; }
.footer-btn:hover { background: var(--sf-green-bold); }
.footer-fine { color: var(--sf-muted); }

/* Links generally */
a { color: var(--sf-green); }
a:hover { color: var(--sf-green-bold); }

/* Autorun button — strong green when active (pitch-ready). */
.tiny-btn.active {
  background: var(--sf-green);
  color: #000;
  border-color: var(--sf-green);
  font-weight: 700;
}
.tiny-btn.active:hover { background: var(--sf-green-bold); color: #000; }