/* SessionPilot marketing site — dark technical theme. Self-contained, no @import/CDN. */

:root {
  --bg: #0d0f14;
  --bg-elev: #12151d;
  --bg-elev-2: #171b26;
  --border: #232838;
  --text: #e6e8ec;
  --text-dim: #9aa3b2;
  --accent: #5b8cff;
  --accent-hover: #7ba3ff;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.25; }
p { color: var(--text-dim); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(13, 15, 20, 0.92);
  backdrop-filter: blur(6px);
  z-index: 10;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 0;
}
.nav-brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: var(--text); }
.nav-brand:hover { text-decoration: none; }
.nav-logo { height: 30px; width: auto; display: block; }
.nav-links { display: flex; gap: 24px; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.nav-links a { color: var(--text-dim); font-weight: 500; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); text-decoration: none; }

/* Hero */
.hero { padding: 72px 0 48px; text-align: center; }
.hero h1 { font-size: clamp(1.8rem, 4vw, 2.75rem); margin: 0 0 16px; }
.hero .lead { color: var(--text-dim); font-size: 1.15rem; max-width: 640px; margin: 0 auto 32px; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
}
.btn-primary { background: var(--accent); color: #0a0c10; }
.btn-primary:hover { background: var(--accent-hover); text-decoration: none; }
.btn-secondary { background: transparent; border-color: var(--border); color: var(--text); }
.btn-secondary:hover { border-color: var(--accent); text-decoration: none; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* Cards / grid */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; margin: 40px 0; }
.card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.card h3 { margin-top: 0; }
.card p { margin-bottom: 0; }

/* Feature groups */
.feature-group { margin: 48px 0; }
.feature-group h2 { border-bottom: 1px solid var(--border); padding-bottom: 12px; }
.feature-group ul { padding-left: 20px; color: var(--text-dim); }
.feature-group li { margin-bottom: 8px; }

/* Pricing tiers */
.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; margin: 40px 0; }
.tier { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; display: flex; flex-direction: column; }
.tier.featured { border-color: var(--accent); background: var(--bg-elev-2); }
.tier h3 { margin: 0 0 8px; }
.tier .price { font-size: 2rem; font-weight: 700; margin: 0 0 4px; color: var(--text); }
.tier .price span { font-size: 1rem; color: var(--text-dim); font-weight: 400; }
.tier ul { list-style: none; padding: 0; margin: 24px 0; color: var(--text-dim); flex-grow: 1; }
.tier li { padding: 6px 0; border-top: 1px solid var(--border); }
.tier li:first-child { border-top: none; }
.tier .btn { text-align: center; }

/* Forms */
form { max-width: 520px; }
label { display: block; margin: 16px 0 6px; font-weight: 600; }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
}
textarea { resize: vertical; min-height: 100px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
.hp-field { position: absolute; left: -9999px; top: -9999px; width: 1px; height: 1px; overflow: hidden; }
#result { margin-top: 16px; min-height: 1.5em; }
.hint { font-size: 0.85rem; color: var(--text-dim); margin-top: -2px; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); margin-top: 80px; padding: 32px 0; color: var(--text-dim); font-size: 0.9rem; }

/* Responsive */
@media (max-width: 640px) {
  .nav-links { gap: 14px; font-size: 0.9rem; }
  .hero { padding: 48px 0 32px; }
  .tier { padding: 24px 18px; }
}