/* Trace Continuity Labs — Brand CSS
   Colors: Blue #0A84FF, Silver #C0C0C0, Dark #0A0A0F */
:root {
  --blue: #0A84FF;
  --blue-dark: #0066CC;
  --blue-light: #3399FF;
  --silver: #C0C0C0;
  --silver-light: #F5F5F7;
  --dark: #0A0A0F;
  --dark-card: #12121A;
  --dark-border: #1E1E2A;
  --white: #FFFFFF;
  --gray: #8A8A9A;
  --green: #30D158;
  --red: #FF453A;
  --orange: #FF9F0A;
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--dark);
  color: var(--silver-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-light); }

/* Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,10,15,0.92); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--dark-border);
  padding: 0 24px; height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo img { height: 36px; }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: var(--gray); font-size: 14px; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-cta {
  background: var(--blue); color: var(--white) !important;
  padding: 8px 18px; border-radius: 8px; font-weight: 600; font-size: 13px;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--blue-dark); }
.mobile-menu { display: none; background: none; border: none; color: var(--white); font-size: 24px; cursor: pointer; }

/* Sections */
.section { padding: 100px 24px; max-width: 1200px; margin: 0 auto; }
.section-sm { padding: 60px 24px; max-width: 1200px; margin: 0 auto; }
.page-top { padding-top: 120px; }

/* Hero */
.hero {
  padding: 160px 24px 100px;
  text-align: center; max-width: 900px; margin: 0 auto;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700; letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--silver-light), var(--blue));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; line-height: 1.15; margin-bottom: 20px;
}
.hero p { font-size: 1.15rem; color: var(--gray); max-width: 640px; margin: 0 auto 32px; }
.hero-badge {
  display: inline-block; background: rgba(10,132,255,0.1);
  border: 1px solid rgba(10,132,255,0.3); color: var(--blue);
  padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 500;
  margin-bottom: 24px;
}

/* Buttons */
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 10px;
  font-weight: 600; font-size: 15px; border: none; cursor: pointer;
  transition: all 0.2s;
}
.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); }
.btn-outline {
  background: transparent; color: var(--silver-light);
  border: 1px solid var(--dark-border);
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }
.btn-sm { padding: 8px 18px; font-size: 13px; border-radius: 8px; }

/* Cards */
.card {
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: 12px; padding: 28px; transition: border-color 0.2s;
}
.card:hover { border-color: rgba(10,132,255,0.3); }
.card h3 { color: var(--white); font-size: 1.1rem; margin-bottom: 8px; }
.card p { color: var(--gray); font-size: 0.9rem; }

/* Grid */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }

/* Code / Console */
.console {
  background: #0D0D14; border: 1px solid var(--dark-border);
  border-radius: 10px; overflow: hidden; font-family: var(--mono); font-size: 13px;
}
.console-header {
  background: var(--dark-card); padding: 10px 16px;
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--dark-border);
}
.console-dot { width: 10px; height: 10px; border-radius: 50%; }
.console-dot.red { background: #FF5F57; }
.console-dot.yellow { background: #FEBC2E; }
.console-dot.green { background: #28C840; }
.console-body { padding: 16px; overflow-x: auto; line-height: 1.7; }
.console-body .highlight { color: var(--blue); }
.console-body .redacted { color: var(--red); }
.console-body .safe { color: var(--green); }
.console-body .token { color: var(--orange); }
.console-body .dim { color: #555; }

/* Playground */
.playground-tabs {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px;
  border-bottom: 1px solid var(--dark-border); padding-bottom: 16px;
}
.playground-tab {
  padding: 8px 16px; background: var(--dark-card);
  border: 1px solid var(--dark-border); border-radius: 8px;
  color: var(--gray); font-size: 13px; cursor: pointer;
  transition: all 0.2s; font-family: var(--font);
}
.playground-tab:hover { color: var(--white); border-color: var(--blue); }
.playground-tab.active { background: var(--blue); color: var(--white); border-color: var(--blue); }
.playground-panel { display: none; }
.playground-panel.active { display: block; }

textarea.input-area, input.input-field {
  width: 100%; background: #0D0D14; color: var(--silver-light);
  border: 1px solid var(--dark-border); border-radius: 8px;
  padding: 14px; font-family: var(--mono); font-size: 13px;
  resize: vertical; outline: none; transition: border-color 0.2s;
}
textarea.input-area:focus, input.input-field:focus { border-color: var(--blue); }
select.input-field {
  background: #0D0D14; color: var(--silver-light);
  border: 1px solid var(--dark-border); border-radius: 8px;
  padding: 10px 14px; font-size: 13px; outline: none;
}

.result-box {
  background: #0D0D14; border: 1px solid var(--dark-border);
  border-radius: 8px; padding: 16px; margin-top: 16px;
  font-family: var(--mono); font-size: 13px; white-space: pre-wrap;
  word-break: break-word; max-height: 400px; overflow-y: auto;
}

/* Metrics */
.metric-card {
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: 10px; padding: 20px; text-align: center;
}
.metric-value { font-size: 2rem; font-weight: 700; color: var(--blue); }
.metric-label { font-size: 0.8rem; color: var(--gray); margin-top: 4px; }

/* Pricing */
.price-card {
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: 14px; padding: 32px; position: relative;
}
.price-card.featured { border-color: var(--blue); }
.price-card.featured::before {
  content: 'Most Popular'; position: absolute; top: -12px; left: 50%;
  transform: translateX(-50%); background: var(--blue); color: var(--white);
  padding: 4px 16px; border-radius: 12px; font-size: 12px; font-weight: 600;
}
.price-amount { font-size: 2.5rem; font-weight: 700; color: var(--white); }
.price-period { font-size: 0.9rem; color: var(--gray); }
.price-features { list-style: none; margin: 20px 0; }
.price-features li { padding: 8px 0; color: var(--gray); font-size: 0.9rem; }
.price-features li::before { content: '✓ '; color: var(--green); font-weight: 600; }

/* Footer */
.footer {
  border-top: 1px solid var(--dark-border); padding: 40px 24px;
  text-align: center; color: var(--gray); font-size: 0.85rem;
}

/* Badges/Tags */
.tag {
  display: inline-block; padding: 3px 10px; border-radius: 6px;
  font-size: 11px; font-weight: 600;
}
.tag-blue { background: rgba(10,132,255,0.15); color: var(--blue); }
.tag-green { background: rgba(48,209,88,0.15); color: var(--green); }
.tag-red { background: rgba(255,69,58,0.15); color: var(--red); }
.tag-orange { background: rgba(255,159,10,0.15); color: var(--orange); }

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute;
    top: 64px; left: 0; right: 0; background: var(--dark);
    padding: 20px; border-bottom: 1px solid var(--dark-border);
  }
  .hero { padding: 120px 16px 60px; }
  .section { padding: 60px 16px; }
  .grid-3 { grid-template-columns: 1fr; }
}

/* Utility */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full { width: 100%; }
.hidden { display: none; }
.loading { opacity: 0.5; pointer-events: none; }
.fade-in { animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.pulse { animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }

/* ─── HOMEPAGE SECTIONS ─────────────────────────────────── */

/* Hero */
.home-hero {
  position: relative;
  overflow: hidden;
}
.hero-bg-img {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  width: 100%; height: 100%; object-fit: cover; opacity: 0.15;
  z-index: 1;
}
.home-hero .section { position: relative; z-index: 2; }
.hero-headline {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700; letter-spacing: -0.02em;
  color: var(--white); line-height: 1.1; margin-bottom: 20px;
}
.hero-sub {
  font-size: 1.15rem; color: var(--silver-light);
  max-width: 640px; margin: 0 auto;
}

/* Section headline/sub */
.section-headline {
  font-size: 1.8rem; font-weight: 700; color: var(--white);
  margin-bottom: 16px; letter-spacing: -0.01em;
}
.section-sub {
  font-size: 1rem; color: var(--gray);
  line-height: 1.8; margin-bottom: 20px;
}
.section-problem {
  border-top: 1px solid var(--dark-border);
  border-bottom: 1px solid var(--dark-border);
}
.problem-body p { color: var(--gray); font-size: 1rem; line-height: 1.9; margin-bottom: 16px; }
.problem-warning {
  color: var(--white) !important; font-weight: 600;
  font-size: 1.05rem; margin-top: 8px;
}

/* Section: Who decides */
.section-who { background: var(--dark); }
.three-questions {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; margin-top: 40px;
}
.q-card {
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: 12px; padding: 28px;
}
.q-num {
  font-family: var(--mono); font-size: 1.5rem; font-weight: 700;
  color: var(--blue); margin-bottom: 12px;
}
.q-label {
  font-size: 0.95rem; font-weight: 600; color: var(--white);
  margin-bottom: 12px; line-height: 1.4;
}
.q-answer { font-size: 0.85rem; color: var(--gray); line-height: 1.7; }

/* Section: Architecture flow */
.section-arch { background: var(--dark); }
.arch-flow {
  display: flex; align-items: center; justify-content: center;
  gap: 4px; margin: 40px 0 32px;
  flex-wrap: wrap; row-gap: 16px;
}
.arch-step {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.arch-icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--blue); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
}
.arch-label {
  font-size: 0.7rem; color: var(--gray); text-align: center;
  max-width: 80px; line-height: 1.3;
}
.arch-arrow {
  font-size: 1.2rem; color: var(--dark-border); flex-shrink: 0;
}

/* Section: Before execution */
.section-before { background: var(--dark); }
.three-moments {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; margin-top: 40px;
}
.moment-card {
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: 12px; padding: 28px;
}
.moment-num {
  font-family: var(--mono); font-size: 1.5rem; font-weight: 700;
  color: var(--blue); margin-bottom: 12px;
}
.moment-title { font-size: 0.95rem; font-weight: 600; color: var(--white); margin-bottom: 10px; }
.moment-desc { font-size: 0.85rem; color: var(--gray); line-height: 1.7; }

/* Section: Five Core Rules */
.section-rules { background: var(--dark); }
.rules-grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 16px; margin-top: 40px;
}
.rule-card {
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: 12px; padding: 24px; text-align: center;
}
.rule-num {
  font-family: var(--mono); font-size: 2rem; font-weight: 700;
  color: rgba(10,132,255,0.2); margin-bottom: 8px;
}
.rule-card h3 { font-size: 0.85rem; color: var(--white); margin-bottom: 8px; }
.rule-card p { font-size: 0.78rem; color: var(--gray); line-height: 1.5; }

/* Section: Detection */
.section-detection { background: var(--dark); }
.detection-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 12px; margin: 24px 0;
}
.detect-card {
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: 8px; padding: 16px; text-align: center;
  font-size: 0.85rem; font-weight: 600; color: var(--silver-light);
  transition: border-color 0.2s;
}
.detect-card:hover { border-color: var(--blue); }

/* Section: Continuity */
.section-continuity { background: var(--dark-card); border-top: 1px solid var(--dark-border); border-bottom: 1px solid var(--dark-border); }
.continuity-inner {
  display: flex; gap: 48px; align-items: flex-start;
  max-width: 820px; margin: 0 auto;
}
.continuity-pillars { margin-top: 24px; }
.pillar {
  padding: 12px 0; border-bottom: 1px solid var(--dark-border);
  font-size: 0.9rem; color: var(--gray);
}
.pillar span { color: var(--blue); font-weight: 600; }

/* Section: Regulated */
.section-regulated { background: var(--dark); }
.verticals-grid {
  display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: center; margin: 32px 0 40px;
}
.vert-chip {
  background: rgba(10,132,255,0.1); border: 1px solid rgba(10,132,255,0.3);
  color: var(--blue); padding: 8px 20px; border-radius: 20px;
  font-size: 0.85rem; font-weight: 500;
}
.compliance-features {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.comp-feat {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: 10px; padding: 20px;
}
.comp-icon { color: var(--blue); font-size: 1.2rem; flex-shrink: 0; }

/* Section: PDF */
.section-pdf { background: var(--dark-card); border-top: 1px solid var(--dark-border); }
.pdf-card {
  display: flex; gap: 48px; align-items: center;
  background: var(--dark); border: 1px solid var(--dark-border);
  border-radius: 14px; padding: 48px; max-width: 900px; margin: 0 auto;
}
.pdf-info { flex: 1; }
.pdf-chapters {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4px 24px; margin-top: 16px;
}
.chapter {
  font-size: 0.8rem; color: var(--gray); font-family: var(--mono);
  padding: 4px 0; border-bottom: 1px solid var(--dark-border);
}
.pdf-visual {
  flex-shrink: 0; display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.pdf-icon { font-size: 3rem; color: rgba(10,132,255,0.2); }

/* Section: Trust */
.section-trust { background: var(--dark); }
.trust-flow {
  display: flex; align-items: center; justify-content: center;
  gap: 4px; margin: 32px 0; flex-wrap: wrap; row-gap: 12px;
}
.trust-node {
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: 8px; padding: 10px 16px;
  font-size: 0.8rem; font-weight: 500; color: var(--silver-light);
  white-space: nowrap;
}
.trust-enforce {
  border-color: var(--blue); color: var(--blue);
}
.trust-arrow { color: var(--dark-border); font-size: 1.2rem; flex-shrink: 0; }

/* Section: CTA */
.section-cta { background: var(--dark-card); border-top: 1px solid var(--dark-border); }

/* Responsive */
@media (max-width: 1024px) {
  .rules-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .three-questions { grid-template-columns: 1fr; }
  .three-moments { grid-template-columns: 1fr; }
  .rules-grid { grid-template-columns: 1fr 1fr; }
  .compliance-features { grid-template-columns: 1fr; }
  .detection-grid { grid-template-columns: repeat(2, 1fr); }
  .pdf-card { flex-direction: column; }
  .continuity-inner { flex-direction: column; }
  .pdf-chapters { grid-template-columns: 1fr; }
  .trust-flow { gap: 8px; }
}
@media (max-width: 480px) {
  .rules-grid { grid-template-columns: 1fr; }
}