/* ---------- Tokens ---------- */
:root {
  --radius: 0.75rem;
  --background: oklch(0.16 0.012 180);
  --foreground: oklch(0.97 0.005 180);
  --surface: oklch(0.20 0.015 180);
  --card: oklch(0.22 0.018 180);
  --primary: oklch(0.82 0.19 148);
  --primary-glow: oklch(0.88 0.22 148);
  --primary-foreground: oklch(0.16 0.012 180);
  --muted-foreground: oklch(0.68 0.02 180);
  --border: oklch(0.30 0.02 180 / 60%);

  --gradient-hero:
    radial-gradient(ellipse at 50% 0%, oklch(0.82 0.19 148 / 0.25), transparent 60%),
    linear-gradient(180deg, oklch(0.18 0.014 180), oklch(0.14 0.010 180));
  --gradient-primary: linear-gradient(135deg, var(--primary), var(--primary-glow));
  --gradient-text: linear-gradient(135deg, oklch(0.97 0.005 180), oklch(0.82 0.19 148));

  --shadow-glow: 0 20px 60px -20px oklch(0.82 0.19 148 / 0.5);
  --shadow-card: 0 10px 40px -20px oklch(0 0 0 / 0.5);

  --font-display: "Instrument Serif", ui-serif, Georgia, serif;
  --font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -0.02em; font-weight: 500; line-height: 1.05; }

.italic { font-style: italic; }
.center { text-align: center; }
.muted { color: var(--muted-foreground); font-size: 0.9rem; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.container-narrow { max-width: 780px; margin: 0 auto; padding: 0 1.5rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(20px);
  background: color-mix(in oklab, var(--background) 70%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-display); font-size: 1.5rem; }
.brand-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); box-shadow: var(--shadow-glow); }
.nav-links { display: none; gap: 2rem; font-size: 0.9rem; color: var(--muted-foreground); }
.nav-links a:hover { color: var(--foreground); }
@media (min-width: 768px) { .nav-links { display: flex; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  border-radius: 999px; font-weight: 600; white-space: nowrap;
  transition: all 0.3s ease; cursor: pointer; border: 0;
}
.btn-md { padding: 0.7rem 1.25rem; font-size: 0.85rem; }
.btn-lg { padding: 1rem 1.75rem; font-size: 1rem; }
.btn-primary { background: var(--gradient-primary); color: var(--primary-foreground); box-shadow: var(--shadow-glow); }
.btn-primary:hover { transform: scale(1.02); filter: brightness(1.1); }
.btn-ghost { background: transparent; color: var(--foreground); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--surface); }
.arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--gradient-hero); }
.grid-lines {
  position: absolute; inset: 0; opacity: 0.4; pointer-events: none;
  background-image:
    linear-gradient(oklch(0.82 0.19 148 / 0.06) 1px, transparent 1px),
    linear-gradient(90deg, oklch(0.82 0.19 148 / 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero-inner {
  position: relative; padding: 5rem 1.5rem 6rem;
  display: grid; gap: 4rem; align-items: center;
}
@media (min-width: 1024px) { .hero-inner { grid-template-columns: 1.1fr 1fr; padding-top: 7rem; padding-bottom: 8rem; } }

.badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  border: 1px solid var(--border); background: color-mix(in oklab, var(--surface) 60%, transparent);
  padding: 0.4rem 1rem; border-radius: 999px; font-size: 0.75rem;
  color: var(--muted-foreground); font-weight: 500;
}
.h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); margin-top: 1.5rem; }
.h2 { font-size: clamp(2rem, 4vw, 3rem); margin-top: 0.75rem; }
.lead { margin-top: 1.5rem; font-size: 1.05rem; color: var(--muted-foreground); max-width: 40rem; }
.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cta-row { margin-top: 2.5rem; display: flex; flex-wrap: wrap; gap: 1rem; }
.checks { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: 1.5rem; font-size: 0.9rem; color: var(--muted-foreground); }

/* ---------- Chat card ---------- */
.hero-visual { position: relative; }
.hero-glow { position: absolute; inset: -1.5rem; border-radius: 1.5rem; background: oklch(0.82 0.19 148 / 0.1); filter: blur(60px); }
.chat-card {
  position: relative; background: var(--background);
  border: 1px solid var(--border); border-radius: 1rem;
  padding: 1.5rem; box-shadow: var(--shadow-card);
}
.chat-head { display: flex; align-items: center; gap: 0.75rem; border-bottom: 1px solid var(--border); padding-bottom: 1rem; }
.chat-avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--gradient-primary); display: grid; place-items: center; color: var(--primary-foreground); }
.chat-title { font-size: 0.9rem; font-weight: 600; }
.chat-status { font-size: 0.75rem; color: var(--primary); }
.chat-body { margin-top: 1.25rem; display: flex; flex-direction: column; gap: 0.75rem; }
.bubble { max-width: 80%; padding: 0.6rem 1rem; border-radius: 1rem; font-size: 0.9rem; }
.bubble.in { align-self: flex-start; background: var(--surface); border-bottom-left-radius: 0.25rem; }
.bubble.out { align-self: flex-end; background: var(--gradient-primary); color: var(--primary-foreground); border-bottom-right-radius: 0.25rem; }
.chat-foot { display: flex; align-items: center; gap: 0.5rem; padding-top: 0.5rem; font-size: 0.75rem; color: var(--muted-foreground); }
.dot-pulse { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100% { opacity: 1 } 50% { opacity: .3 } }

/* ---------- Stats ---------- */
.stats { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: color-mix(in oklab, var(--surface) 40%, transparent); }
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; padding: 2rem 1.5rem; text-align: center; }
@media (min-width: 768px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } }
.stat-n { font-family: var(--font-display); font-size: 2.25rem; color: var(--primary); }
.stat-l { margin-top: 0.25rem; font-size: 0.7rem; color: var(--muted-foreground); text-transform: uppercase; letter-spacing: 0.1em; }

/* ---------- Sections ---------- */
.section { padding: 6rem 0; }
.section-alt { padding: 6rem 0; background: color-mix(in oklab, var(--surface) 40%, transparent); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 48rem; }
.section-head.center { margin: 0 auto; text-align: center; }
.eyebrow { color: var(--primary); font-size: 0.85rem; font-weight: 500; letter-spacing: 0.15em; text-transform: uppercase; }
.eyebrow.center { text-align: center; }

/* ---------- Grids/Cards ---------- */
.grid-3 { margin-top: 3.5rem; display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }
.grid-4 { margin-top: 3.5rem; display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid-4 { grid-template-columns: repeat(4, 1fr); } }
.two-col { display: grid; gap: 4rem; align-items: center; grid-template-columns: 1fr; }
@media (min-width: 1024px) { .two-col { grid-template-columns: repeat(2, 1fr); } }

.card { border: 1px solid var(--border); background: var(--card); border-radius: 1rem; padding: 2rem; }
.card.sm { padding: 1.5rem; }
.card .ico { font-size: 1.5rem; color: var(--primary); }
.card h3 { margin-top: 1.25rem; font-size: 1.25rem; }
.card h4 { margin-top: 1rem; font-size: 1.05rem; font-family: var(--font-sans); font-weight: 600; }
.card p { margin-top: 0.5rem; color: var(--muted-foreground); font-size: 0.95rem; }
.card blockquote { color: var(--foreground); line-height: 1.6; }
.card figcaption { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.card .who { font-weight: 600; }
.card .role { color: var(--muted-foreground); font-size: 0.85rem; }
.step-n { font-family: var(--font-display); color: var(--primary); font-size: 3.5rem; line-height: 1; }

.check-list { margin-top: 2rem; display: grid; gap: 1rem; }
.check-list li { display: flex; gap: 0.75rem; align-items: flex-start; }
.chk { display: inline-grid; place-items: center; width: 20px; height: 20px; margin-top: 2px; border-radius: 50%; background: var(--gradient-primary); color: var(--primary-foreground); font-size: 0.7rem; flex-shrink: 0; }

/* ---------- Pricing ---------- */
.pricing {
  margin-top: 3.5rem; position: relative; overflow: hidden;
  border: 1px solid color-mix(in oklab, var(--primary) 40%, transparent);
  background: var(--card); border-radius: 1.5rem; padding: 2.5rem;
  box-shadow: var(--shadow-glow);
}
@media (min-width: 768px) { .pricing { padding: 3.5rem; } }
.pricing-badge { position: absolute; top: 0; right: 0; background: var(--gradient-primary); color: var(--primary-foreground); font-size: 0.7rem; font-weight: 700; padding: 0.4rem 1rem; border-bottom-left-radius: 1rem; }
.pricing-head { display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: space-between; align-items: flex-end; }
.plan-name { font-size: 1.75rem; }
.strike { color: var(--muted-foreground); text-decoration: line-through; font-size: 0.85rem; }
.price { font-family: var(--font-display); font-size: 3rem; line-height: 1; }
.price span { font-family: var(--font-sans); font-size: 1rem; color: var(--muted-foreground); }
.feat-grid { margin-top: 2.5rem; display: grid; gap: 0.75rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .feat-grid { grid-template-columns: repeat(2, 1fr); } }
.feat-grid li { display: flex; gap: 0.5rem; }
.pricing-cta { margin-top: 2.5rem; display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }

/* ---------- FAQ ---------- */
.faq { margin-top: 3rem; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border); padding: 1.25rem 0; }
.faq details:last-child { border-bottom: 0; }
.faq summary { display: flex; justify-content: space-between; align-items: center; gap: 1rem; font-weight: 500; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq .plus { color: var(--primary); font-size: 1.5rem; transition: transform .2s; }
.faq details[open] .plus { transform: rotate(45deg); }
.faq details p { margin-top: 0.75rem; color: var(--muted-foreground); }

/* ---------- Final CTA ---------- */
.final-cta { position: relative; overflow: hidden; padding: 7rem 0; background: var(--gradient-hero); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; padding: 2.5rem 1.5rem; gap: 1rem; color: var(--muted-foreground); font-size: 0.9rem; }
.footer-inner .brand { font-size: 1.1rem; color: var(--foreground); }