/* ProtoComp marketing site — shared design tokens + components
   OLED-first, clinical, medical-software grade. */

:root {
  /* Surfaces */
  --bg:               #000000;
  --surface:          #0A0A0A;
  --surface-raised:   #111111;
  --border-subtle:    rgba(255, 255, 255, 0.06);
  --border-medium:    rgba(255, 255, 255, 0.10);

  /* Text */
  --text:             #F0F0F0;
  --text-secondary:   rgba(255, 255, 255, 0.55);
  --text-tertiary:    rgba(255, 255, 255, 0.30);

  /* Accents */
  --cyan:             #00E5FF;
  --cyan-glow:        rgba(0, 229, 255, 0.30);
  --cyan-soft:        rgba(0, 229, 255, 0.08);
  --amber:            #FFAB00;
  --amber-soft:       rgba(255, 171, 0, 0.10);
  --green:            #00E676;
  --red:              #FF3D3D;

  /* Radii */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 14px;

  /* Layout */
  --max-w: 1200px;
  --form-w: 430px;

  /* Fonts */
  --font-sans: 'DM Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--cyan); color: #000; }

a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover { color: var(--cyan); }

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

/* ─────────────────────────────────────────
   Type system
   ───────────────────────────────────────── */

.eyebrow {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0;
}

.eyebrow-muted {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin: 0;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}

h1 { font-size: clamp(40px, 5.5vw, 64px); line-height: 1.05; }
h2 { font-size: clamp(32px, 4vw, 44px); line-height: 1.1; }
h3 { font-size: clamp(22px, 2.4vw, 28px); line-height: 1.2; }
h4 { font-size: 18px; line-height: 1.3; }

p { margin: 0; color: var(--text-secondary); }
p.lead { font-size: clamp(18px, 1.6vw, 20px); color: var(--text-secondary); max-width: 64ch; }

.text-primary   { color: var(--text); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary  { color: var(--text-tertiary); }
.text-cyan      { color: var(--cyan); }
.text-amber     { color: var(--amber); }

/* ─────────────────────────────────────────
   Layout
   ───────────────────────────────────────── */

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
  border-bottom: 1px solid var(--border-subtle);
}

@media (max-width: 640px) {
  section { padding: 64px 0; }
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 48px;
  max-width: 720px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (max-width: 800px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.row { display: flex; gap: 16px; flex-wrap: wrap; }

/* ─────────────────────────────────────────
   Nav
   ───────────────────────────────────────── */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border-subtle);
}
.nav-inner {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 24px;
}
.nav-brand {
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--text);
}
.nav-brand b { color: var(--cyan); font-weight: 500; }
.nav-brand:hover { color: var(--text); }
.nav-links {
  display: flex;
  gap: 0;
  align-items: stretch;
}
.nav-links a {
  position: relative;
  display: flex;
  align-items: center;
  font-size: 13.5px;
  color: var(--text-secondary);
  padding: 0 16px;
  transition: color 0.15s ease;
}
.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  left: 16px; right: 16px; bottom: -1px;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transition: transform 0.18s ease;
}
.nav-links a:not(.nav-cta):hover { color: var(--text); }
.nav-links a:not(.nav-cta):hover::after { transform: scaleX(1); }
.nav-links a.active:not(.nav-cta) { color: var(--text); }
.nav-links a.active:not(.nav-cta)::after { transform: scaleX(1); }
.nav-cta {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.3px;
  color: #000;
  background: var(--cyan);
  border: 1px solid var(--cyan);
  padding: 7px 14px;
  border-radius: 8px;
  margin-left: 8px;
  transition: background 0.15s ease, color 0.15s ease;
}
.nav-cta:hover {
  color: #000;
  background: #5cefff;
}
@media (max-width: 720px) {
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ─────────────────────────────────────────
   Buttons
   ───────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 12px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.18s ease;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--cyan);
  color: #000;
  border-color: var(--cyan);
}
.btn-primary:hover {
  color: #000;
  box-shadow: 0 0 24px var(--cyan-glow);
  transform: translateY(-1px);
}
.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-medium);
}
.btn-secondary:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.03);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
  padding: 14px 8px;
}
.btn-ghost:hover { color: var(--cyan); }

/* ─────────────────────────────────────────
   Cards
   ───────────────────────────────────────── */

.card {
  background: var(--surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.18s ease, transform 0.18s ease;
}
.card:hover {
  border-color: var(--border-medium);
}
.card-link {
  cursor: pointer;
}
.card-link:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 24px var(--cyan-glow);
}
.card-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--text-tertiary);
  text-transform: uppercase;
}
.card-amber {
  border-color: rgba(255, 171, 0, 0.35);
  background: var(--amber-soft);
}
.card-amber .eyebrow { color: var(--amber); }
.card-soon {
  opacity: 0.65;
}
.card-soon::after {
  content: 'COMING SOON';
  position: absolute;
  top: 16px; right: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.2px;
  color: var(--amber);
  padding: 4px 8px;
  border: 1px solid rgba(255, 171, 0, 0.35);
  border-radius: 6px;
}
.card-soon { position: relative; }

/* ─────────────────────────────────────────
   Form
   ───────────────────────────────────────── */

.input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border-medium);
  border-radius: 12px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  padding: 14px 16px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-soft);
}
.input::placeholder { color: var(--text-tertiary); }

.waitlist-form {
  display: flex;
  gap: 8px;
  max-width: var(--form-w);
}
.waitlist-form .input { flex: 1; }

/* ─────────────────────────────────────────
   Stat blocks (proof section)
   ───────────────────────────────────────── */

.stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 32px 0;
}
.stat-number {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(36px, 5vw, 56px);
  color: var(--cyan);
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ─────────────────────────────────────────
   Hero
   ───────────────────────────────────────── */

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
  padding: 72px 0 80px;
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 920px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
}
.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}
.hero h1 { max-width: 16ch; }
.hero .lead { max-width: 46ch; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
}
.hero-meta .live {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

/* ─────────────────────────────────────────
   Product console (hero panel + reusable)
   ───────────────────────────────────────── */

.console {
  background: var(--surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--r-lg);
  overflow: hidden;
  font-size: 14px;
}
.console-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--surface-raised);
}
.console-bar .dots { display: flex; gap: 6px; }
.console-bar .dots i {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--border-medium);
  display: block;
}
.console-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.console-title b { color: var(--cyan); font-weight: 500; }
.console-meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 0.5px;
}
.console-section {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
}
.console-section:last-child { border-bottom: none; }
.console-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}
/* compound rows */
.cmp-row {
  display: grid;
  grid-template-columns: 14px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 7px 0;
}
.cmp-row + .cmp-row { border-top: 1px solid var(--border-subtle); }
.cmp-dot { width: 7px; height: 7px; border-radius: 50%; }
.cmp-dot.green { background: var(--green); }
.cmp-dot.amber { background: var(--amber); }
.cmp-dot.cyan  { background: var(--cyan); }
.cmp-name { color: var(--text); font-weight: 500; font-size: 13.5px; }
.cmp-name span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 0.5px;
  margin-left: 8px;
  text-transform: uppercase;
}
.cmp-dose {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 0.2px;
}
/* adjustment readout rows */
.adj-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0;
}
.adj-row + .adj-row { border-top: 1px solid var(--border-subtle); }
.adj-key { color: var(--text-secondary); font-size: 13.5px; }
.adj-key small {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-tertiary);
  letter-spacing: 0.3px;
  margin-top: 2px;
}
.adj-val {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.adj-val.down { color: var(--amber); }
.adj-val.neutral { color: var(--text); }

.page-header {
  padding: 96px 0 64px;
  border-bottom: 1px solid var(--border-subtle);
}
.page-header h1 { max-width: 22ch; }
.page-header .eyebrow { margin-bottom: 16px; }

/* ─────────────────────────────────────────
   FAQ accordion
   ───────────────────────────────────────── */

.faq-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 48px;
}
.faq-group-head {
  margin-bottom: 8px;
}
.faq-item {
  border: 1px solid var(--border-subtle);
  background: var(--surface);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 0.15s;
}
.faq-item[open] { border-color: var(--border-medium); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--cyan);
  font-size: 22px;
  line-height: 1;
  transition: transform 0.2s;
}
.faq-item[open] summary::after {
  content: '−';
}
.faq-item summary:hover { color: var(--cyan); }
.faq-answer {
  padding: 0 24px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  max-width: 70ch;
}

/* ─────────────────────────────────────────
   Tech page bits
   ───────────────────────────────────────── */

.arch {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.arch-row {
  display: grid;
  gap: 12px;
}
.arch-row.r4 { grid-template-columns: repeat(4, 1fr); }
.arch-row.r3 { grid-template-columns: repeat(3, 1fr); }
.arch-row.r1 { grid-template-columns: 1fr; }
@media (max-width: 800px) {
  .arch-row.r4, .arch-row.r3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .arch-row.r4, .arch-row.r3 { grid-template-columns: 1fr; }
}
.arch-cell {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.arch-cell.engine {
  background: var(--surface-raised);
  border-color: var(--border-medium);
  padding: 22px;
  min-height: 140px;
}
.arch-cell.ai {
  background: var(--cyan-soft);
  border-color: rgba(0, 229, 255, 0.30);
  padding: 22px;
}
.arch-cell.corpus {
  background: var(--surface-raised);
  border-color: var(--border-medium);
  padding: 22px;
}
.arch-cell-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--cyan);
}
.arch-cell.ai .arch-cell-label { color: var(--cyan); }
.arch-cell-title { font-weight: 600; color: var(--text); font-size: 15px; }
.arch-cell-body { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

.arch-connector {
  height: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.arch-connector::before {
  content: '';
  width: 1px;
  height: 100%;
  background: var(--border-medium);
}

.belief {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 0;
  border-top: 1px solid var(--border-subtle);
}
.belief:last-child { border-bottom: 1px solid var(--border-subtle); }
.belief-head {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--cyan);
}
.belief-body { color: var(--text-secondary); max-width: 70ch; }

.does-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  overflow: hidden;
}
@media (max-width: 640px) { .does-grid { grid-template-columns: 1fr; } }
.does-col {
  padding: 24px;
  background: var(--surface);
}
.does-col + .does-col {
  border-left: 1px solid var(--border-subtle);
}
@media (max-width: 640px) {
  .does-col + .does-col { border-left: none; border-top: 1px solid var(--border-subtle); }
}
.does-head {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.does-head.yes { color: var(--green); }
.does-head.no  { color: var(--red); }
.does-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.does-list li {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.does-list li::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--text-tertiary);
  margin-top: 9px;
  flex-shrink: 0;
}

/* ─────────────────────────────────────────
   Bullet lists (generic)
   ───────────────────────────────────────── */

.bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.bullets li {
  position: relative;
  padding-left: 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.55;
}
.bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

/* ─────────────────────────────────────────
   Footer
   ───────────────────────────────────────── */

footer.site {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border-subtle);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin: 0 0 16px;
  font-weight: 500;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  font-size: 14px;
  color: var(--text-secondary);
}
.footer-col a:hover { color: var(--cyan); }
.footer-tag {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  max-width: 32ch;
}
.footer-bottom {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

/* ─────────────────────────────────────────
   Inline pills / chips
   ───────────────────────────────────────── */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--border-medium);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.pill-cyan { color: var(--cyan); border-color: rgba(0, 229, 255, 0.4); }
.pill-amber { color: var(--amber); border-color: rgba(255, 171, 0, 0.4); }
.dot {
  width: 6px; height: 6px; border-radius: 50%; background: currentColor;
}

/* ─────────────────────────────────────────
   Banner
   ───────────────────────────────────────── */

.banner-amber {
  border: 1px solid rgba(255, 171, 0, 0.35);
  background: var(--amber-soft);
  border-radius: var(--r-md);
  padding: 20px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.banner-amber-body {
  font-size: 14px;
  color: var(--text);
  max-width: 50ch;
}
.banner-amber a {
  color: var(--amber);
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
}

/* ─────────────────────────────────────────
   Beta badge (nav + headings)
   ───────────────────────────────────────── */

.beta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--amber);
  border: 1px solid rgba(255, 171, 0, 0.35);
  border-radius: 5px;
  padding: 1px 5px;
  margin-left: 6px;
  vertical-align: middle;
  line-height: 1.4;
}