/* BlockPropAI marketing site — dark-teal, matching the product palette
   (#12151f/#1a1d29/#242938 with #00d4aa accent). Plain CSS, no build. */
:root {
  --bg: #12151f; --bg2: #1a1d29; --card: #242938;
  --accent: #00d4aa; --accent-ink: #0b1420;
  --text: #f3f5f9; --muted: #9aa5b8; --border: #334155;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif; }
img { max-width: 100%; display: block; }

/* header */
.header { display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 0.9rem 5%; position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(18,21,31,0.85); backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.06); }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.15rem;
  color: var(--text); text-decoration: none; }
.logo img { height: 26px; }
.nav { display: flex; gap: 1.4rem; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav a:hover { color: var(--text); }
.cta-btn { background: var(--accent); color: var(--accent-ink); border: 0; font-weight: 700;
  padding: 0.6rem 1.2rem; border-radius: 8px; cursor: pointer; font-size: 0.95rem; }
.cta-btn:hover { filter: brightness(1.08); }
@media (max-width: 760px) { .nav { display: none; } }

/* hero */
.hero { padding: 130px 5% 48px; text-align: center;
  background:
    radial-gradient(1000px 500px at 80% -10%, rgba(0,212,170,0.18), transparent 60%),
    radial-gradient(800px 420px at 10% 0%, rgba(99,102,241,0.14), transparent 55%),
    var(--bg); }
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); line-height: 1.1; margin: 0 0 18px; font-weight: 800; }
.hero-sub { color: var(--muted); font-size: 1.15rem; line-height: 1.6; max-width: 660px; margin: 0 auto 26px; }
.hero-ctas { display: flex; gap: 12px; justify-content: center; margin-bottom: 30px; flex-wrap: wrap; }
.btn-primary { background: var(--accent); color: var(--accent-ink); border: 0; font-weight: 700;
  padding: 0.9rem 1.7rem; border-radius: 10px; font-size: 1.05rem; cursor: pointer; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border);
  padding: 0.9rem 1.7rem; border-radius: 10px; font-size: 1.05rem; cursor: pointer; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* signup form */
.signup { max-width: 560px; margin: 0 auto; }
.signup-row { display: flex; gap: 10px; }
.signup-row input[type="email"] { flex: 1; background: var(--card); border: 1px solid var(--border);
  color: var(--text); border-radius: 10px; padding: 0.85rem 1rem; font-size: 1rem; }
.signup-row input[type="email"]:focus { outline: none; border-color: var(--accent); }
.signup-row button { background: var(--accent); color: var(--accent-ink); border: 0; font-weight: 700;
  padding: 0.85rem 1.3rem; border-radius: 10px; cursor: pointer; white-space: nowrap; }
.signup-row button:disabled { opacity: 0.6; }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.demo-flag { color: var(--accent); font-size: 0.95rem; margin: 0 0 10px; font-weight: 600; }
.more-toggle { display: block; margin-top: 12px; color: var(--muted); font-size: 0.9rem; text-align: left; cursor: pointer; }
.signup textarea { width: 100%; margin-top: 8px; background: var(--card); border: 1px solid var(--border);
  color: var(--text); border-radius: 10px; padding: 0.7rem 0.9rem; font: inherit; }
.form-note { margin-top: 12px; font-weight: 600; color: var(--accent); min-height: 1.2em; }

/* hero screenshot */
.hero-shot { max-width: 1000px; margin: 44px auto 0; }
.hero-shot img { border-radius: 14px; border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 30px 80px rgba(0,0,0,0.55); }
.hero-shot figcaption { color: var(--muted); font-size: 0.9rem; margin-top: 12px; }

/* features */
.features { padding: 64px 5% 8px; }
.features h2 { text-align: center; font-size: 2rem; margin: 0 0 44px; }
.feature-row { display: flex; align-items: center; gap: 48px; max-width: 1060px; margin: 0 auto 64px; }
.feature-row.flip { flex-direction: row-reverse; }
.f-text { flex: 1; }
.f-text h3 { font-size: 1.45rem; margin: 0 0 10px; }
.f-text p { color: var(--muted); line-height: 1.65; margin: 0 0 12px; }
.f-text ul { color: var(--muted); line-height: 1.9; margin: 0; padding-left: 1.1rem; }
.f-text li::marker { color: var(--accent); }
.f-shot { flex: 1.15; min-width: 0; margin: 0; }
.f-shot img { border-radius: 12px; border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 18px 50px rgba(0,0,0,0.45); }
@media (max-width: 820px) { .feature-row, .feature-row.flip { flex-direction: column; gap: 20px; } }

/* how it works */
.how { padding: 16px 5% 48px; text-align: center; }
.how h2 { font-size: 2rem; margin-bottom: 28px; }
.how-steps { max-width: 680px; margin: 0 auto; text-align: left; line-height: 1.8;
  color: var(--muted); font-size: 1.05rem; }
.how-steps li { margin-bottom: 14px; padding-left: 4px; }
.how-steps li strong { color: var(--text); }
.how-steps li::marker { color: var(--accent); font-weight: 700; }

/* trust strip */
.truth-strip { background: linear-gradient(90deg, rgba(0,212,170,0.12), rgba(99,102,241,0.10));
  border-block: 1px solid rgba(255,255,255,0.06); text-align: center; padding: 30px 8%; }
.truth-strip p { margin: 0; font-size: 1.12rem; }

/* pricing */
.pricing { padding: 56px 8%; text-align: center; }
.pricing h2 { font-size: 2rem; margin-bottom: 14px; }
.pricing-line { font-size: 1.15rem; color: var(--muted); }
.pricing-line strong { color: var(--accent); }

/* faq */
.faq { padding: 8px 5% 64px; text-align: center; }
.faq h2 { font-size: 2rem; margin-bottom: 28px; }
.faq-grid { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.faq-item { max-width: 300px; text-align: left; background: var(--card);
  border: 1px solid var(--border); border-radius: 12px; padding: 20px 22px; }
.faq-item h3 { margin: 0 0 8px; font-size: 1rem; }
.faq-item p { margin: 0; color: var(--muted); line-height: 1.55; font-size: 0.95rem; }

/* footer */
.site-footer { padding: 34px 8%; border-top: 1px solid rgba(255,255,255,0.07);
  text-align: center; color: var(--muted); }
.site-footer a { color: var(--accent); text-decoration: none; }
.copyright { font-size: 0.85rem; color: #64748b; }

/* pricing tiers */
.price-grid { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.price-card { width: 250px; text-align: left; background: var(--card); border: 1px solid var(--border);
  border-radius: 14px; padding: 24px; }
.price-card.featured { border-color: var(--accent); box-shadow: 0 0 30px rgba(0,212,170,0.12); }
.price-card h3 { margin: 0 0 6px; }
.price { font-size: 2rem; font-weight: 800; margin: 0 0 14px; color: var(--text); }
.price span { font-size: 1rem; font-weight: 400; color: var(--muted); }
.price-card ul { margin: 0; padding-left: 1.1rem; color: var(--muted); line-height: 1.9; }
.price-card li::marker { color: var(--accent); }
.pricing-fine { color: #64748b; font-size: 0.85rem; margin-top: 22px; }
.preview-tag { color: var(--accent); font-weight: 600; font-size: 0.95rem; }

.hero-eyebrow { color: var(--accent); font-weight: 700; letter-spacing: 0.02em;
  font-size: 1.05rem; margin: 0 0 14px; }

/* AVA live demo frame */
.ava-live iframe { width: 100%; height: 620px; border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px; background: #0d1020; box-shadow: 0 24px 60px rgba(0,0,0,0.5); }
.ava-live figcaption { color: var(--muted); font-size: 0.9rem; margin-top: 10px; text-align: center; }
.ava-live a { color: var(--accent); text-decoration: none; }

/* AVA full-width demo */
.feature-stack { max-width: 1060px; margin: 0 auto 64px; }
.f-text-center { max-width: 720px; margin: 0 auto 28px; text-align: left; }
.ava-wide { margin: 0; }
.ava-wide iframe { width: 100%; height: 760px; }