/* NightVault GitHub Pages — shared dark theme matching the app */
:root {
  --bg0:  #0a0a14;
  --bg1:  #11111d;
  --bg2:  #1a1a28;
  --bg3:  #232336;
  --accent:        #b78cff;
  --accent-light:  #d4b8ff;
  --accent-glow:   rgba(183, 140, 255, 0.12);
  --accent-border: rgba(183, 140, 255, 0.3);
  --text:          #f1f1f5;
  --text-secondary:#a1a1b5;
  --text-muted:    #6a6a80;
  --gold:          #ffc857;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg0);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 24px 96px;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--bg2);
  background: rgba(10, 10, 20, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-logo {
  font-weight: 900;
  font-size: 18px;
  letter-spacing: -0.5px;
}

.nav-logo .lock { margin-right: 6px; }

.nav-links { display: flex; gap: 24px; }
.nav-links a { color: var(--text-secondary); font-size: 14px; font-weight: 600; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

h1 {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -1px;
  margin: 0 0 16px;
}

h2 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.4px;
  margin: 40px 0 12px;
  color: var(--text);
}

h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 28px 0 10px;
  color: var(--accent-light);
}

p, li { color: var(--text-secondary); font-size: 15px; }

.lead {
  font-size: 17px;
  color: var(--text);
  margin-bottom: 32px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

table th, table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--bg2);
}

table th {
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 1.5px;
}

.callout {
  background: var(--accent-glow);
  border: 1px solid var(--accent-border);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 14px;
}

.muted {
  color: var(--text-muted);
  font-size: 13px;
}

.divider {
  border: none;
  border-top: 1px solid var(--bg2);
  margin: 40px 0;
}

footer {
  border-top: 1px solid var(--bg2);
  padding: 32px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

footer a { color: var(--text-muted); margin: 0 8px; }

/* Landing-only */
.hero {
  text-align: center;
  padding: 80px 24px 60px;
  background: radial-gradient(ellipse at top, var(--accent-glow), transparent 60%);
}

.hero-emoji { font-size: 72px; margin-bottom: 16px; }

.hero h1 {
  font-size: 56px;
  letter-spacing: -2px;
  margin-bottom: 16px;
}

.hero .tagline {
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 32px;
}

.cta {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 16px;
  text-decoration: none;
  box-shadow: 0 8px 32px rgba(183, 140, 255, 0.4);
}

.cta:hover { text-decoration: none; opacity: 0.95; }

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  max-width: 960px;
  margin: 60px auto;
  padding: 0 24px;
}

.feature {
  background: var(--bg1);
  border: 1px solid var(--bg3);
  border-radius: 16px;
  padding: 24px;
}

.feature-emoji { font-size: 28px; margin-bottom: 12px; }
.feature h3 { color: var(--text); margin: 0 0 6px; }
.feature p { font-size: 13px; margin: 0; }

@media (max-width: 600px) {
  .container { padding: 32px 20px 64px; }
  .hero h1 { font-size: 40px; }
  .hero { padding: 48px 20px 40px; }
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 13px; }
}