/* Runtime Care — design tokens & shared styles.
   Direction: dark engineering-studio, warm amber accent, editorial type
   pairing (Fraunces display / Inter body), generous rhythm, no default
   Tailwind/shadcn look. */

:root {
  --color-bg: oklch(16% 0.014 55);
  --color-bg-raised: oklch(20% 0.016 55);
  --color-bg-inset: oklch(13% 0.012 55);
  --color-border: oklch(32% 0.02 55 / 0.6);
  --color-border-soft: oklch(32% 0.02 55 / 0.3);
  --color-text: oklch(93% 0.01 70);
  --color-text-dim: oklch(72% 0.015 70);
  --color-text-faint: oklch(56% 0.014 70);
  --color-accent: oklch(78% 0.14 75);
  --color-accent-strong: oklch(83% 0.16 75);
  --color-accent-ink: oklch(20% 0.03 75);
  --color-teal: oklch(72% 0.09 195);
  --color-danger: oklch(68% 0.19 25);
  --color-success: oklch(75% 0.15 145);

  --font-display: 'Fraunces', ui-serif, Georgia, serif;
  --font-body: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace;

  --text-xs: clamp(0.76rem, 0.73rem + 0.15vw, 0.83rem);
  --text-sm: clamp(0.86rem, 0.83rem + 0.15vw, 0.94rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.08rem);
  --text-lg: clamp(1.15rem, 1.08rem + 0.35vw, 1.32rem);
  --text-xl: clamp(1.4rem, 1.26rem + 0.7vw, 1.75rem);
  --text-2xl: clamp(1.9rem, 1.6rem + 1.5vw, 2.6rem);
  --text-hero: clamp(2.6rem, 1.9rem + 3.6vw, 4.6rem);

  --space-xs: 0.5rem;
  --space-sm: 0.9rem;
  --space-md: 1.6rem;
  --space-lg: clamp(2.2rem, 1.8rem + 2vw, 3.6rem);
  --space-xl: clamp(3.5rem, 2.6rem + 4.5vw, 6.5rem);
  --space-section: clamp(4.5rem, 3.4rem + 5.5vw, 8.5rem);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --duration-fast: 150ms;
  --duration-normal: 320ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

body {
  margin: 0;
  background:
    radial-gradient(ellipse 90% 60% at 15% -10%, oklch(30% 0.05 75 / 0.35), transparent 55%),
    radial-gradient(ellipse 70% 50% at 100% 0%, oklch(28% 0.04 195 / 0.18), transparent 60%),
    var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--color-accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--color-accent-strong); }

.wrap { max-width: 1120px; margin-inline: auto; padding-inline: clamp(1.25rem, 4vw, 2.5rem); }
.wrap-narrow { max-width: 800px; margin-inline: auto; padding-inline: clamp(1.25rem, 4vw, 2.5rem); }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.12; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
p { margin: 0; color: var(--color-text-dim); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.eyebrow::before {
  content: '';
  width: 0.5em;
  height: 0.5em;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px oklch(78% 0.14 75 / 0.18);
}

/* ---------- Header ---------- */
header.site {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: oklch(16% 0.014 55 / 0.82);
  border-bottom: 1px solid var(--color-border-soft);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.05rem;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--color-text);
  text-decoration: none;
}
.brand .mark {
  width: 1.6em;
  height: 1.6em;
  border-radius: 6px;
  background: linear-gradient(155deg, var(--color-accent), oklch(60% 0.13 45));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-accent-ink);
}
.nav-links { display: flex; gap: clamp(1rem, 2vw, 2rem); align-items: center; }
.nav-links a { color: var(--color-text-dim); text-decoration: none; font-size: var(--text-sm); }
.nav-links a:hover { color: var(--color-text); }
.nav-cta {
  font-size: var(--text-sm);
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--color-accent);
  color: var(--color-accent-strong) !important;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo), background var(--duration-fast);
}
.btn-primary { background: var(--color-accent); color: var(--color-accent-ink); }
.btn-primary:hover { background: var(--color-accent-strong); transform: translateY(-1px); box-shadow: 0 10px 24px -8px oklch(78% 0.14 75 / 0.45); color: var(--color-accent-ink); }
.btn-ghost { background: transparent; border-color: var(--color-border); color: var(--color-text); }
.btn-ghost:hover { border-color: var(--color-text-dim); transform: translateY(-1px); color: var(--color-text); }
.btn-block { width: 100%; }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(3.5rem, 4vw + 2rem, 6rem) var(--space-section); }
.hero-grid { display: grid; gap: var(--space-lg); grid-template-columns: 1.15fr 0.85fr; align-items: center; }
@media (max-width: 880px) { .hero-grid { grid-template-columns: 1fr; } }
.hero h1 { font-size: var(--text-hero); margin-block: 0.5em 0.4em; }
.hero h1 em { font-style: normal; color: var(--color-accent); }
.hero .lede { font-size: var(--text-lg); max-width: 46ch; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: var(--space-md); }
.hero-meta { display: flex; gap: var(--space-md); margin-top: var(--space-md); flex-wrap: wrap; }
.hero-meta div { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); }
.hero-meta strong { display: block; color: var(--color-text); font-size: var(--text-lg); font-family: var(--font-display); }

.hero-panel {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  box-shadow: 0 30px 60px -30px oklch(5% 0 0 / 0.7);
  position: relative;
  overflow: hidden;
}
.hero-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, oklch(78% 0.14 75 / 0.08), transparent 45%);
  pointer-events: none;
}
.hero-panel .dots { display: flex; gap: 6px; margin-bottom: var(--space-sm); }
.hero-panel .dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--color-border); }
.hero-panel pre { margin: 0; white-space: pre-wrap; color: var(--color-text-dim); line-height: 1.7; }
.hero-panel .diff-add { color: var(--color-success); }
.hero-panel .diff-del { color: var(--color-danger); text-decoration: line-through; opacity: 0.7; }
.hero-panel .diff-comment { color: var(--color-text-faint); }

/* ---------- Sections ---------- */
section { padding-block: var(--space-section); border-top: 1px solid var(--color-border-soft); }
section:first-of-type { border-top: none; }
.section-head { max-width: 62ch; margin-bottom: var(--space-lg); }
.section-head h2 { margin-top: 0.5em; }
.section-head p { margin-top: var(--space-sm); font-size: var(--text-lg); }

/* ---------- Symptom grid ---------- */
.symptom-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1px; background: var(--color-border-soft); border: 1px solid var(--color-border-soft); border-radius: var(--radius-md); overflow: hidden; }
.symptom-card { background: var(--color-bg-raised); padding: var(--space-md); display: flex; flex-direction: column; gap: 0.7rem; }
.symptom-card .icon { font-family: var(--font-mono); color: var(--color-danger); font-size: var(--text-lg); }
.symptom-card h4 { font-family: var(--font-body); font-size: var(--text-base); font-weight: 600; color: var(--color-text); }
.symptom-card p { font-size: var(--text-sm); }

/* ---------- Process ---------- */
.process { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md); }
@media (max-width: 880px) { .process { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .process { grid-template-columns: 1fr; } }
.process-step { position: relative; padding-top: var(--space-md); border-top: 2px solid var(--color-border); }
.process-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: var(--text-sm);
  display: block;
  margin-bottom: 0.6rem;
}
.process-step h4 { font-size: var(--text-base); font-weight: 600; margin-bottom: 0.4rem; }
.process-step p { font-size: var(--text-sm); }

/* ---------- Sample report teaser ---------- */
.report-teaser { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); align-items: center; }
@media (max-width: 880px) { .report-teaser { grid-template-columns: 1fr; } }
.report-card {
  background: var(--color-bg-inset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
}
.report-card .stat-row { display: flex; gap: var(--space-md); margin-bottom: var(--space-md); flex-wrap: wrap; }
.report-card .stat { font-family: var(--font-mono); }
.report-card .stat strong { display: block; font-size: var(--text-2xl); font-family: var(--font-display); color: var(--color-accent); }
.report-card .stat span { font-size: var(--text-xs); color: var(--color-text-faint); text-transform: uppercase; letter-spacing: 0.06em; }
.report-card table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.report-card td { padding: 0.5rem 0; border-top: 1px solid var(--color-border-soft); color: var(--color-text-dim); }
.report-card td:first-child { width: 2.5rem; font-family: var(--font-mono); color: var(--color-text-faint); }
.report-card td.sev { width: 3rem; font-family: var(--font-mono); font-size: var(--text-xs); }
.sev-p0 { color: var(--color-danger); font-weight: 700; }
.sev-p1 { color: var(--color-accent); font-weight: 700; }
.sev-p2 { color: var(--color-teal); font-weight: 700; }

/* ---------- Pricing ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); align-items: stretch; }
@media (max-width: 900px) { .pricing-grid { grid-template-columns: 1fr; } }
.price-card {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  position: relative;
}
.price-card.featured {
  border-color: var(--color-accent);
  background: linear-gradient(165deg, oklch(24% 0.03 75 / 0.7), var(--color-bg-raised) 55%);
  transform: translateY(-8px);
  box-shadow: 0 30px 60px -25px oklch(78% 0.14 75 / 0.35);
}
@media (max-width: 900px) { .price-card.featured { transform: none; } }
.price-card .badge {
  position: absolute;
  top: -0.75rem;
  right: 1.25rem;
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
}
.price-card h3 { font-size: var(--text-lg); }
.price-card .price { font-family: var(--font-display); font-size: var(--text-2xl); color: var(--color-text); }
.price-card .price small { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); font-weight: 400; }
.price-card ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.55rem; font-size: var(--text-sm); color: var(--color-text-dim); flex: 1; }
.price-card ul li { padding-left: 1.3em; position: relative; }
.price-card ul li::before { content: '→'; position: absolute; left: 0; color: var(--color-accent); font-family: var(--font-mono); }

/* ---------- Lead form ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; } }
form.lead-form { display: flex; flex-direction: column; gap: var(--space-sm); }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label { font-size: var(--text-xs); color: var(--color-text-faint); text-transform: uppercase; letter-spacing: 0.05em; font-family: var(--font-mono); }
.field input, .field select, .field textarea {
  background: var(--color-bg-inset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
  border-color: var(--color-accent);
}
.field textarea { resize: vertical; min-height: 6rem; }
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.form-status { font-size: var(--text-sm); min-height: 1.4em; }
.form-status.ok { color: var(--color-success); }
.form-status.err { color: var(--color-danger); }

.payment-card {
  background: var(--color-bg-inset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.payment-option { display: flex; flex-direction: column; gap: 0.5rem; padding-bottom: var(--space-sm); border-bottom: 1px solid var(--color-border-soft); }
.payment-option:last-child { border-bottom: none; padding-bottom: 0; }
.payment-option h4 { font-size: var(--text-base); }
.addr {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background: var(--color-bg);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  word-break: break-all;
  color: var(--color-text-dim);
}

/* ---------- Footer ---------- */
footer.site { border-top: 1px solid var(--color-border-soft); padding-block: var(--space-lg); }
.footer-grid { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-md); flex-wrap: wrap; }
.footer-grid .legal { font-size: var(--text-xs); color: var(--color-text-faint); max-width: 46ch; line-height: 1.6; }
.footer-links { display: flex; gap: var(--space-md); font-size: var(--text-sm); }
.footer-links a { color: var(--color-text-dim); text-decoration: none; }
.footer-links a:hover { color: var(--color-text); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity var(--duration-normal) var(--ease-out-expo), transform var(--duration-normal) var(--ease-out-expo); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Utility ---------- */
.center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }