/* PlanckBot marketing site — palette synced with ui/theme.py COLORS */
:root {
  --primary:     #5FD4A3;
  --primary-dim: #3FA07D;
  --accent:      #7EE5D6;
  --brass:       #D4A84A;
  --secondary:   #9F7EE5;

  --bg:          #07121C;
  --surface:     #0F1E2D;
  --surface2:    #162B3E;
  --border:      #1E3A50;
  --border-glow: #2F6B8E;

  --text:        #E8F5F0;
  --text-muted:  #6E8BA0;
  --text-dim:    #4A6578;

  --radius-md: 10px;
  --radius-lg: 14px;

  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo,
               Consolas, monospace;
}

*,
*::before,
*::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(1400px 900px at 15% -10%, rgba(95,212,163,0.08) 0%, transparent 55%),
    radial-gradient(1100px 700px at 85% 110%, rgba(126,229,214,0.05) 0%, transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--primary); }

code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.08em 0.4em;
  color: var(--accent);
}

pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text);
  box-shadow: 0 0 30px rgba(95,212,163,0.05);
}
pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
}

/* Decorative orbs behind content */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
}
.bg-orb--1 {
  top: -150px;
  left: -150px;
  width: 500px;
  height: 500px;
  background: rgba(95,212,163,0.12);
}
.bg-orb--2 {
  bottom: -200px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: rgba(126,229,214,0.08);
}

/* Layout shell */
main, header, footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
}

header.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 22px;
  padding-bottom: 22px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.2px;
}
.brand:hover { color: var(--primary); }
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  box-shadow: 0 0 22px rgba(95,212,163,0.3);
}
.brand-name .brand-plural {
  color: var(--primary);
}
header.nav nav a {
  color: var(--text-muted);
  margin-left: 28px;
  font-size: 14px;
  transition: color 0.15s ease;
}
header.nav nav a:hover { color: var(--text); }

/* Hero */
.hero {
  padding: 64px 0 56px;
  text-align: center;
}
.eyebrow {
  color: var(--primary);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 700;
  margin: 0 0 18px;
}
.hero h1 {
  font-size: clamp(34px, 5.5vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0 auto 22px;
  max-width: 920px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead {
  max-width: 720px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-muted);
}

.cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 36px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--primary);
  color: var(--bg);
  box-shadow: 0 0 30px rgba(95,212,163,0.35);
}
.btn-primary:hover {
  background: var(--accent);
  color: var(--bg);
  transform: translateY(-1px);
  box-shadow: 0 0 40px rgba(126,229,214,0.5);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.btn-lg {
  padding: 16px 34px;
  font-size: 17px;
}

.stat-row {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 180px;
}
.stat-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.stat-unit {
  font-size: 20px;
  color: var(--primary-dim);
  margin-left: 2px;
  font-weight: 700;
}
.stat-label {
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
  line-height: 1.4;
}

/* Screenshot section */
.shot {
  padding: 24px 0 48px;
  text-align: center;
}
.shot img {
  width: 100%;
  max-width: 1080px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow:
    0 0 40px rgba(95,212,163,0.12),
    0 20px 60px rgba(0,0,0,0.4);
}

/* Layer grid */
.layers {
  padding: 64px 0 48px;
}
.layers h2, .install h2, .features h2, .cta-block h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  text-align: center;
}
.section-lead {
  text-align: center;
  color: var(--text-muted);
  margin: 0 auto 36px;
  max-width: 640px;
}

.layer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.layer-grid article {
  background: linear-gradient(180deg, var(--surface) 0%, rgba(15,30,45,0.2) 120%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
}
.layer-tag {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--surface2);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  border: 1px solid var(--primary);
}
.layer-grid h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--text);
}
.layer-grid p {
  color: var(--text-muted);
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
}

/* Install */
.install {
  padding: 48px 0;
}
.install pre {
  max-width: 760px;
  margin: 0 auto 20px;
}

/* Features */
.features {
  padding: 64px 0 48px;
}
.feature-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}
.feature-grid li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
}
.feature-grid h3 {
  color: var(--primary);
  font-size: 15px;
  margin: 0 0 6px;
  letter-spacing: 0.2px;
}
.feature-grid p {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0;
  line-height: 1.55;
}

/* CTA block */
.cta-block {
  padding: 64px 0 72px;
  text-align: center;
}
.cta-block h2 {
  margin-bottom: 24px;
}

/* Footer */
footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 28px 36px;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 12px;
}

/* Responsive */
@media (max-width: 680px) {
  header.nav { padding: 16px 0; }
  header.nav nav a { margin-left: 14px; font-size: 13px; }
  .brand-name { font-size: 16px; }
  .hero { padding: 40px 0 32px; }
  .stat-row { gap: 20px; margin-top: 40px; }
  .stat { min-width: 130px; }
  .stat-num { font-size: 34px; }
  .layers, .install, .features, .cta-block { padding: 40px 0; }
  footer { flex-direction: column; text-align: center; }
}