/* Limba Labs — shared stylesheet
   Converted from the Claude Design refinement pass into plain, deployable CSS.
   Palette: #FAFAF8 (bg), #282828 (ink), #E8563F (coral), #B8B8B8 (gray) */

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

:root {
  --bg: #FAFAF8;
  --ink: #282828;
  --coral: #E8563F;
  --coral-dim: #C24D3A;
  --gray: #B8B8B8;
  --dim: #6C6C69;
  --cream-dim: #F0EFEB;
  --dark-card: #393938;
  --dark-border: #454545;
  --dark-text: #C6C5C2;
  --dark-text-mono: #C2C2C1;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--coral); }
input, textarea, button { font-family: 'Space Grotesk', sans-serif; }
::selection { background: var(--coral); color: var(--bg); }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 clamp(20px, 4vw, 36px); }
.mono { font-family: 'JetBrains Mono', monospace; }

.tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--coral-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
}
.tag::before { content: "◆"; font-size: 9px; color: var(--coral); }
.tag.on-dark { color: var(--coral); }

/* ---------- Header ---------- */
header { padding: 18px 0; border-bottom: 1px solid var(--gray); }
header .wrap { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo .logo-mark { height: 44px; width: auto; display: block; }
.logo .logo-word { height: 16px; width: auto; display: block; }
footer .logo { gap: 14px; }
footer .logo .logo-mark { height: 52px; }
footer .logo .logo-word { height: 19px; }
nav { display: flex; align-items: center; gap: clamp(16px, 3vw, 30px); flex-wrap: wrap; }
nav a.navlink { font-size: 13.5px; color: var(--dim); transition: color .18s ease; }
nav a.navlink:hover { color: var(--ink); }
.btn-header {
  background: var(--ink); color: var(--bg); padding: 10px 18px; font-size: 13px; font-weight: 600;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: background .18s ease;
}
.btn-header:hover { background: var(--coral); color: var(--bg); }

/* ---------- Buttons (shared) ---------- */
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-solid {
  background: var(--coral); color: var(--bg); padding: 15px 26px; font-weight: 600; font-size: 14.5px;
  display: inline-flex; align-items: center; gap: 8px;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: background .18s ease; border: none; cursor: pointer;
}
.btn-solid:hover { background: var(--coral-dim); color: var(--bg); }
.btn-outline {
  background: var(--ink); padding: 1.5px; display: inline-flex;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.btn-outline .notch-fill {
  background: var(--bg); color: var(--ink); padding: 14px 26px; font-weight: 600; font-size: 14.5px;
  display: inline-flex; align-items: center; gap: 8px;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: background .18s ease, color .18s ease;
}
.btn-outline:hover .notch-fill { background: var(--ink); color: var(--bg); }

/* ---------- Hero ---------- */
.hero { padding: clamp(80px, 12vw, 124px) 0 clamp(64px, 9vw, 92px); }
.hero h1 {
  font-size: clamp(44px, 7vw, 76px); font-weight: 700; letter-spacing: -0.025em; line-height: 0.98;
  margin-bottom: clamp(20px, 3vw, 28px); max-width: 760px; text-wrap: balance;
}
.hero p {
  font-size: clamp(16px, 1.6vw, 18px); color: var(--dim); max-width: 560px; margin-bottom: 36px;
  line-height: 1.55; text-wrap: pretty;
}
.hero .cta-row { margin-bottom: 44px; }
.hero-location { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--dim); }

/* ---------- Section heads ---------- */
.section-head { margin-bottom: clamp(36px, 5vw, 52px); max-width: 620px; }
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 38px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.12;
  text-wrap: balance;
}
.section-head p { color: var(--dim); font-size: 15px; line-height: 1.6; text-wrap: pretty; margin-top: 14px; }
.section-head.on-dark h2 { color: var(--bg); }
.section-head.on-dark p { color: var(--dark-text-mono); }

section.dark { background: var(--ink); color: var(--bg); }
section { padding: clamp(72px, 10vw, 112px) 0; }

/* ---------- Philosophy ---------- */
.flow-line {
  font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--dark-text-mono);
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 38px;
}
.flow-line span.node { color: var(--coral); }
.philosophy-body { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: clamp(24px, 4vw, 50px); }
.philosophy-body p { color: var(--dark-text); font-size: 15px; line-height: 1.65; margin-bottom: 14px; text-wrap: pretty; }

/* ---------- Grid card frame/fill (two-layer clip-path border technique) ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 18px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }

.frame {
  padding: 1.5px;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  transition: transform .18s ease, background .18s ease;
}
.frame .notch-fill {
  height: 100%;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}
.frame.frame-lg {
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}
.frame.frame-lg .notch-fill {
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

/* Service cards & process steps: coral frame, cream-dim fill */
.svc-card, .step {
  background: var(--coral);
}
.svc-card .notch-fill, .step .notch-fill {
  background: var(--cream-dim); padding: 28px;
}
.svc-card:hover, .step:hover { transform: translateY(-3px); }
.svc-card .n { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--coral-dim); margin-bottom: 16px; }
.svc-card h3, .step h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.svc-card p, .step p { color: var(--dim); font-size: 13.5px; line-height: 1.55; text-wrap: pretty; }
.step .big-num { font-family: 'JetBrains Mono', monospace; font-size: 32px; font-weight: 500; color: var(--coral); opacity: 0.45; margin-bottom: 14px; }

/* Differentiator cards: dark border frame, dark fill */
.diff-card { background: var(--dark-border); }
.diff-card .notch-fill { background: var(--dark-card); padding: 26px; }
.diff-card:hover { background: var(--coral); transform: translateY(-3px); }
.diff-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; color: var(--coral); }
.diff-card p { color: var(--dark-text); font-size: 13.5px; line-height: 1.55; text-wrap: pretty; }

/* Case study / work cards: dark border frame, dark fill, larger cut */
.case-card { background: var(--dark-border); }
.case-card .notch-fill { background: var(--dark-card); padding: 32px; display: flex; flex-direction: column; }
.case-card:hover { background: var(--coral); transform: translateY(-3px); }
.case-category { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--coral); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 14px; }
.case-card h3 { font-size: 22px; font-weight: 600; margin-bottom: 12px; }
.case-card p { color: var(--dark-text); font-size: 14.5px; line-height: 1.6; margin-bottom: 20px; flex-grow: 1; text-wrap: pretty; }
.case-link { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--coral); }
.case-link:hover { color: var(--coral); text-decoration: underline; text-underline-offset: 4px; }
.case-card-empty { background: #626262; }
.case-card-empty .notch-fill { background: var(--ink); }

/* ---------- About ---------- */
.about-single { max-width: 640px; }
.about-single h2 { font-size: clamp(26px, 3.2vw, 34px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.12; margin-bottom: 20px; text-wrap: balance; }
.about-single p { color: var(--dim); font-size: 15.5px; line-height: 1.65; margin-bottom: 16px; text-wrap: pretty; }

/* ---------- Contact ---------- */
.final-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: clamp(32px, 5vw, 56px); align-items: center; }
.final-grid h2 { font-size: clamp(30px, 3.8vw, 42px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.08; margin-bottom: 16px; text-wrap: balance; }
.final-grid p { color: var(--dim); font-size: 15.5px; line-height: 1.6; margin-bottom: 8px; text-wrap: pretty; }
.contact-form { background: var(--coral); padding: 1.5px; clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px)); }
.contact-form .notch-fill { background: var(--cream-dim); padding: 32px; clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px)); }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-family: 'JetBrains Mono', monospace; font-size: 11.5px; color: var(--dim); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 6px; }
.form-row input, .form-row textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--gray); border-radius: 2px;
  padding: 12px 14px; font-size: 14px; color: var(--ink); transition: border-color .18s ease;
}
.form-row input:focus, .form-row textarea:focus { border-color: var(--coral); outline: none; }
.form-row textarea { min-height: 90px; resize: vertical; }
.form-submit { width: 100%; margin-top: 6px; justify-content: center; }
.form-submit[disabled] { opacity: 0.6; cursor: default; }
.form-row input.invalid, .form-row textarea.invalid { border-color: var(--coral-dim); }
.contact-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-status { font-size: 13.5px; line-height: 1.5; color: var(--ink); margin-top: 12px; min-height: 20px; }
.form-status a { color: var(--coral-dim); text-decoration: underline; }
.contact-alt { margin-top: 26px; }
.final-grid .contact-alt p { margin-bottom: 12px; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--gray); padding: clamp(40px, 6vw, 56px) 0 34px; }
.footer-top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; margin-bottom: 44px; }
.footer-brand p { color: var(--dim); font-size: 13.5px; max-width: 240px; margin-top: 10px; }
.footer-cols { display: flex; gap: clamp(36px, 5vw, 60px); flex-wrap: wrap; }
.footer-col span.mono { display: block; font-size: 11px; color: var(--dim); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 14px; }
.footer-col .links { display: flex; flex-direction: column; gap: 8px; }
.footer-col .links a { font-size: 13.5px; color: var(--ink); transition: color .18s ease; }
.footer-col .links a:hover { color: var(--coral); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-top: 24px; border-top: 1px solid var(--gray); font-size: 12.5px; color: var(--dim); }

/* ---------- Case study page specific ---------- */
.cs-hero { padding: clamp(64px, 9vw, 92px) 0 clamp(48px, 7vw, 72px); border-bottom: 1px solid var(--gray); }
.cs-hero .tag { margin-bottom: 18px; }
.cs-hero h1 { font-size: clamp(36px, 5vw, 54px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.05; margin-bottom: 18px; max-width: 780px; text-wrap: balance; }
.cs-hero p { font-size: 16.5px; color: var(--dim); max-width: 640px; line-height: 1.6; text-wrap: pretty; }
.cs-section { padding: clamp(56px, 8vw, 84px) 0; border-bottom: 1px solid var(--gray); }
.cs-section:last-of-type { border-bottom: none; }
.cs-section-inner { max-width: 780px; }
.cs-section h2 {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--coral-dim);
  text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 20px;
}
.cs-section.dark h2 { color: var(--coral); }
.cs-section h3 { font-size: clamp(22px, 2.6vw, 28px); font-weight: 700; letter-spacing: -0.01em; margin-bottom: 20px; line-height: 1.2; }
.cs-section p { font-size: 15.5px; line-height: 1.65; color: var(--dim); margin-bottom: 16px; text-wrap: pretty; }
.cs-section.dark p { color: var(--dark-text); }
.cs-section ul { margin: 0 0 16px 0; padding-left: 22px; }
.cs-section li { font-size: 15.5px; line-height: 1.65; color: var(--dim); margin-bottom: 10px; text-wrap: pretty; }
.cs-section.dark li { color: var(--dark-text); }
.cs-section li strong { color: var(--ink); }
.cs-section.dark li strong { color: var(--bg); }

.tech-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.tech-pill {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--ink);
  border: 1px solid var(--gray); padding: 8px 14px; border-radius: 2px;
}

.route-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.route-table th, .route-table td { text-align: left; padding: 10px 14px; font-size: 13.5px; border-bottom: 1px solid var(--gray); }
.route-table th { font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--dim); font-weight: 500; }
.route-table td.mono, .route-table td code { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; }

.result-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 18px; margin-top: 28px; }
.result-stat { border-left: 2px solid var(--coral); padding-left: 16px; }
.result-stat .label { font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--dark-text-mono); margin-bottom: 6px; }
.result-stat .value { font-size: 15px; color: var(--bg); line-height: 1.5; }

.cs-cta { padding: clamp(64px, 9vw, 96px) 0; text-align: left; }
.cs-cta h2 { font-size: clamp(26px, 3.2vw, 36px); font-weight: 700; letter-spacing: -0.02em; margin-bottom: 16px; max-width: 600px; text-wrap: balance; }
.cs-cta p { color: var(--dim); font-size: 15.5px; margin-bottom: 30px; max-width: 480px; }

.quote-block {
  border-left: 3px solid var(--coral); padding-left: 22px; margin: 28px 0;
}
.quote-block p { font-size: 17px; font-style: italic; color: var(--ink); margin-bottom: 10px; }
.cs-section.dark .quote-block p { color: var(--bg); }
.quote-block .attribution { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--dim); font-style: normal; }
.cs-section.dark .quote-block .attribution { color: var(--dark-text-mono); }

@media (max-width: 720px) {
  nav a.navlink { display: none; }
}
@media (max-width: 480px) {
  header .wrap { flex-wrap: nowrap; gap: 12px; }
  header .logo { gap: 8px; }
  header .logo .logo-mark { height: 34px; }
  header .logo .logo-word { height: 12px; }
  .btn-header { padding: 9px 12px; font-size: 12px; white-space: nowrap; }
}
}

/* ---------- Case study hero: stat bar ---------- */
.cs-hero-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 30px; flex-wrap: wrap; }
.stat-bar {
  background: var(--ink); padding: 20px 24px; display: flex; gap: 28px; flex-wrap: wrap;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}
.stat-bar .stat { text-align: left; }
.stat-bar .stat .num { font-family: 'JetBrains Mono', monospace; font-size: 22px; font-weight: 600; color: var(--coral); }
.stat-bar .stat .lbl { font-size: 11px; color: var(--dark-text-mono); text-transform: uppercase; letter-spacing: 0.04em; margin-top: 2px; max-width: 110px; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tech-tag { font-family: 'JetBrains Mono', monospace; font-size: 11.5px; color: var(--dim); border: 1px solid var(--gray); padding: 5px 10px; border-radius: 2px; }

/* ---------- Before / After diagram ---------- */
.diagram-compare { display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 28px; }
.diagram-panel { border: 1px solid var(--gray); padding: 24px; }
.diagram-panel.bad { border-color: #D99; background: #FBF2F0; }
.diagram-panel.good { border-color: var(--coral); background: var(--cream-dim); }
.diagram-panel .panel-label {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 16px; display: inline-block; padding: 3px 10px; border-radius: 2px;
}
.diagram-panel.bad .panel-label { background: #E8563F; color: #fff; }
.diagram-panel.good .panel-label { background: var(--coral); color: #fff; }
.flow-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.flow-node {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; background: var(--bg); border: 1px solid var(--gray);
  padding: 10px 14px; border-radius: 2px; white-space: nowrap;
}
.flow-node.blocked { border-color: #C0392B; color: #C0392B; background: #FDEDEB; text-decoration: line-through; }
.flow-node.win { border-color: var(--coral); color: var(--coral-dim); background: #FFF3F0; font-weight: 600; }
.flow-arrow-h { color: var(--gray); font-size: 16px; flex-shrink: 0; }
.flow-outcome { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.outcome-pill { font-size: 12px; padding: 6px 12px; border-radius: 2px; }
.outcome-pill.bad-pill { background: #FDEDEB; color: #C0392B; }
.outcome-pill.good-pill { background: #FFF3F0; color: var(--coral-dim); }

.diagram-branch { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.branch-stack { display: flex; flex-direction: column; gap: 6px; }

/* ---------- Numbered process flow (horizontal steps) ---------- */
.process-flow { display: flex; align-items: stretch; gap: 0; flex-wrap: wrap; margin-top: 24px; }
.process-step {
  flex: 1; min-width: 140px; text-align: center; padding: 20px 14px; position: relative;
  border: 1px solid var(--gray); background: var(--bg);
}
.process-step + .process-step { border-left: none; }
.process-step .step-icon { font-size: 22px; margin-bottom: 10px; }
.process-step .step-label { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.process-step .step-sub { font-family: 'JetBrains Mono', monospace; font-size: 10.5px; color: var(--dim); }
.process-step.highlight { background: var(--coral); border-color: var(--coral); color: #fff; }
.process-step.highlight .step-sub { color: rgba(255,255,255,0.8); }

/* ---------- What we built: icon grid ---------- */
.built-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 24px; }
.built-card { border: 1px solid var(--gray); padding: 22px; }
.built-card .icon { font-size: 24px; margin-bottom: 12px; }
.built-card h4 { font-size: 15.5px; font-weight: 600; margin-bottom: 8px; }
.built-card p { font-size: 13px; color: var(--dim); line-height: 1.5; margin-bottom: 0; }

/* ---------- Implementation timeline ---------- */
.timeline { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 4px; margin-top: 24px; }
.timeline-step { text-align: center; padding: 16px 8px; border-top: 3px solid var(--coral); background: var(--cream-dim); }
.timeline-step .t-num { font-family: 'JetBrains Mono', monospace; font-size: 18px; font-weight: 600; color: var(--coral-dim); }
.timeline-step .t-label { font-size: 11.5px; margin-top: 6px; line-height: 1.3; }

/* ---------- Results: verification cards ---------- */
.verify-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 24px; }
.verify-card { border: 1px solid var(--gray); padding: 20px; display: flex; gap: 12px; align-items: flex-start; }
.verify-check { color: #fff; background: var(--coral); width: 22px; height: 22px; border-radius: 50%; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; }
.verify-card h4 { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.verify-card p { font-size: 12.5px; color: var(--dim); line-height: 1.5; margin-bottom: 0; }

/* ---------- Video embed slot ---------- */
.video-slot {
  border: 1px dashed var(--gray); background: var(--cream-dim); aspect-ratio: 16/9; max-width: 720px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; text-align: center; padding: 20px;
}
.video-slot .play-icon { width: 52px; height: 52px; border-radius: 50%; background: var(--coral); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 20px; }
.video-slot .video-note { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--dim); max-width: 380px; }
.video-embed-wrap { max-width: 720px; }
.video-embed-wrap iframe { width: 100%; aspect-ratio: 16/9; border: none; }

@media (min-width: 640px) {
  .diagram-compare { grid-template-columns: 1fr; }
}

/* ---------- Interactive UML sequence diagram ---------- */
.seq-diagram { margin-top: 28px; border: 1px solid var(--gray); background: var(--bg); }
.seq-controls { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--gray); flex-wrap: wrap; gap: 10px; }
.seq-play {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; font-weight: 600; color: var(--bg);
  background: var(--coral); border: none; padding: 8px 16px; border-radius: 2px; cursor: pointer;
}
.seq-play:hover { background: var(--coral-dim); }
.seq-progress { font-family: 'JetBrains Mono', monospace; font-size: 11.5px; color: var(--dim); }
.seq-svg-wrap { overflow-x: auto; padding: 20px 10px; }
.seq-svg { display: block; margin: 0 auto; min-width: 560px; }
.seq-participant rect { fill: var(--cream-dim); stroke: var(--gray); stroke-width: 1.5; }
.seq-participant text { fill: var(--ink); font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 500; }
.seq-lifeline { stroke: var(--gray); stroke-width: 1; stroke-dasharray: 3 3; }
.seq-step { cursor: pointer; }
.seq-step line.seq-arrow-line { stroke: var(--ink); stroke-width: 1.5; transition: stroke .15s ease, stroke-width .15s ease; }
.seq-step polygon.seq-arrow-head { fill: var(--ink); transition: fill .15s ease; }
.seq-step text.seq-arrow-label { fill: var(--dim); font-family: 'JetBrains Mono', monospace; font-size: 11px; transition: fill .15s ease, font-weight .15s ease; }
.seq-step:hover line.seq-arrow-line, .seq-step.active line.seq-arrow-line { stroke: var(--coral); stroke-width: 2.5; }
.seq-step:hover polygon.seq-arrow-head, .seq-step.active polygon.seq-arrow-head { fill: var(--coral); }
.seq-step:hover text.seq-arrow-label, .seq-step.active text.seq-arrow-label { fill: var(--coral-dim); font-weight: 600; }
.seq-detail { padding: 16px 18px; border-top: 1px solid var(--gray); background: var(--cream-dim); min-height: 20px; }
.seq-detail-inner { font-size: 13.5px; color: var(--ink); line-height: 1.5; }