/* GYST marketing site — tokens from DESIGN.md */
:root {
  --color-primary: #007AFF;
  --color-primary-tint: #F0F7FF;
  --color-success: #34C759;
  --color-gold: #FFD60A;
  --color-orange: #FF9F0A;
  --color-purple: #5E5CE6;
  --color-purple-tint: #F0EFFF;
  --color-blue: #0A84FF;
  --color-error: #FF3B30;
  --color-dark: #1C1C1E;
  --surface-canvas: #F6F5F4;
  --surface-card: #FFFFFF;
  --text-full: rgba(0, 0, 0, 1);
  --text-strong: rgba(0, 0, 0, 0.95);
  --text-muted: rgba(0, 0, 0, 0.6);
  --text-faint: rgba(0, 0, 0, 0.4);
  --text-warm: #615D59;
  --border-hairline: rgba(0, 0, 0, 0.08);
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Inter, sans-serif;
  --radius-card: 12px;
  --radius-button: 8px;
  --radius-pill: 9999px;
  --section-gap: 80px;
  --card-padding: 24px;
  --max-width: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-strong);
  background: var(--surface-canvas);
  -webkit-font-smoothing: antialiased;
}

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

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50; height: 64px;
  background: rgba(246, 245, 244, 0.92); backdrop-filter: blur(12px);
  box-shadow: 0 0.7px 1.5px rgba(0,0,0,0.015), 0 3px 9px rgba(0,0,0,0.03);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; max-width: 1440px; margin: 0 auto; padding: 0 24px; }
.nav-logo { font-weight: 700; font-size: 20px; color: var(--text-full); text-decoration: none; letter-spacing: -0.3px; }
.nav-links { display: flex; gap: 4px; align-items: center; list-style: none; }
.nav-links a {
  color: rgba(0,0,0,0.54); text-decoration: none; font-size: 14px; font-weight: 500;
  padding: 12px 16px; border-radius: var(--radius-button); transition: color 200ms ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text-full); }
.nav-cta { margin-left: 8px; }

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-block; background: var(--color-primary); color: #fff;
  font-size: 15px; font-weight: 500; text-decoration: none;
  padding: 10px 20px; border: none; border-radius: var(--radius-button);
  cursor: pointer; transition: opacity 200ms ease;
}
.btn-primary:hover { opacity: 0.9; }
.btn-ghost {
  display: inline-block; background: var(--color-primary-tint); color: var(--color-primary);
  font-size: 15px; font-weight: 500; text-decoration: none;
  padding: 10px 20px; border: none; border-radius: var(--radius-button);
  cursor: pointer; transition: background 200ms ease;
}
.btn-ghost:hover { background: #e3effd; }

/* ---------- Hero ---------- */
.hero { text-align: center; padding: 96px 0 var(--section-gap); }
.hero h1 {
  font-size: 72px; font-weight: 600; line-height: 1.1; letter-spacing: -2px;
  color: var(--text-full); max-width: 900px; margin: 0 auto 24px;
}
.highlight-pill {
  display: inline-block; background: var(--color-gold); color: #000;
  border-radius: var(--radius-pill); padding: 0 24px; line-height: 1.25;
}
.hero .subhead {
  font-size: 20px; color: var(--text-warm); max-width: 640px; margin: 0 auto 32px; line-height: 1.5;
}
.cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-note { margin-top: 16px; font-size: 14px; color: var(--text-faint); }

/* ---------- Sections ---------- */
.section { padding: calc(var(--section-gap) / 2) 0; }
.section + .section { padding-top: calc(var(--section-gap) / 2); }
.section-title { font-size: 48px; font-weight: 600; letter-spacing: -1.4px; line-height: 1.1; margin-bottom: 16px; color: var(--text-full); }
.section-intro { font-size: 20px; color: var(--text-warm); max-width: 640px; margin-bottom: 40px; }
.center { text-align: center; }
.center .section-intro { margin-left: auto; margin-right: auto; }

/* ---------- Cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.card {
  background: var(--surface-card); border: 1px solid var(--border-hairline);
  border-radius: var(--radius-card); padding: var(--card-padding);
}
.card h3 { font-size: 22px; font-weight: 700; letter-spacing: -0.24px; margin-bottom: 8px; color: var(--text-full); }
.card p { color: var(--text-warm); }

/* Accent feature blocks */
.feature-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center;
  border-radius: var(--radius-card); padding: 40px; margin-bottom: 24px;
}
.feature-block.reverse .feature-media { order: -1; }
.feature-block h2, .feature-block h3 { font-size: 40px; font-weight: 600; letter-spacing: -0.8px; line-height: 1.2; margin-bottom: 12px; }
.feature-block p { font-size: 17px; line-height: 1.55; }
.accent-gold { background: var(--color-gold); color: #000; }
.accent-gold p { color: rgba(0,0,0,0.75); }
.accent-purple { background: var(--color-purple); color: #fff; }
.accent-purple p { color: rgba(255,255,255,0.85); }
.accent-tint { background: var(--color-primary-tint); color: #000; }
.accent-tint p { color: var(--text-warm); }
.accent-dark { background: var(--color-dark); color: #fff; }
.accent-dark p { color: rgba(255,255,255,0.8); }

/* Screenshot placeholder frames */
.phone-frame {
  background: var(--surface-card); border-radius: var(--radius-card);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  aspect-ratio: 9 / 16; max-width: 280px; margin: 0 auto;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); font-size: 14px; text-align: center; padding: 16px;
  border: 1px solid var(--border-hairline);
}

/* ---------- Feature strip ---------- */
.strip { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.strip span {
  background: var(--surface-card); border: 1px solid var(--border-hairline);
  border-radius: var(--radius-pill); padding: 8px 16px; font-size: 14px; color: var(--text-muted);
}

/* ---------- Table ---------- */
.tier-table { width: 100%; border-collapse: collapse; background: var(--surface-card); border: 1px solid var(--border-hairline); border-radius: var(--radius-card); overflow: hidden; }
.tier-table th, .tier-table td { padding: 14px 20px; text-align: left; border-bottom: 1px solid var(--border-hairline); font-size: 15px; }
.tier-table th { font-weight: 600; color: var(--text-full); }
.tier-table td { color: var(--text-warm); }
.tier-table tr:last-child td { border-bottom: none; }
.pill-tag { display: inline-block; border-radius: var(--radius-pill); padding: 4px 12px; font-size: 12px; font-weight: 600; }
.pill-free { background: var(--color-primary-tint); color: var(--color-primary); }
.pill-pro { background: var(--color-gold); color: #000; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-list details {
  background: var(--surface-card); border: 1px solid var(--border-hairline);
  border-radius: var(--radius-card); padding: 20px 24px; margin-bottom: 12px;
}
.faq-list summary { font-size: 18px; font-weight: 600; cursor: pointer; color: var(--text-full); }
.faq-list details p { margin-top: 12px; color: var(--text-warm); }

/* ---------- Waitlist ---------- */
.waitlist { background: var(--color-dark); border-radius: var(--radius-card); padding: 64px 40px; text-align: center; color: #fff; }
.waitlist h2 { font-size: 40px; font-weight: 600; letter-spacing: -0.8px; margin-bottom: 12px; }
.waitlist p { color: rgba(255,255,255,0.8); max-width: 480px; margin: 0 auto 28px; }
.waitlist-form { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.waitlist-form input {
  height: 52px; width: min(360px, 100%); padding: 0 16px; font-size: 16px; font-family: var(--font-sans);
  background: #fff; border: 1px solid var(--border-hairline); border-radius: var(--radius-button); color: var(--text-full);
}
.waitlist-form button { height: 52px; font-size: 16px; }
.form-msg { margin-top: 16px; font-size: 15px; min-height: 22px; }
.form-msg.ok { color: var(--color-success); }
.form-msg.err { color: #ff6b61; }

/* ---------- Footer ---------- */
.footer { padding: 40px 0 48px; text-align: center; color: var(--text-faint); font-size: 14px; }
.footer a { color: var(--text-muted); text-decoration: none; margin: 0 8px; }
.footer a:hover { color: var(--text-full); }

/* ---------- Mobile ---------- */
@media (max-width: 720px) {
  .hero { padding-top: 56px; }
  .hero h1 { font-size: 44px; letter-spacing: -1.2px; }
  .section-title { font-size: 32px; letter-spacing: -0.8px; }
  .feature-block { grid-template-columns: 1fr; padding: 24px; }
  .feature-block.reverse .feature-media { order: 0; }
  .feature-block h2, .feature-block h3 { font-size: 28px; }
  .nav-links a:not(.btn-primary) { padding: 12px 8px; }
  .nav-links li.hide-mobile { display: none; }
  :root { --section-gap: 48px; }
}