/* VentureLab landing page — echoes the app's indigo/purple gradient and glassmorphism look. */

:root {
  --indigo: #667eea;
  --purple: #764ba2;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --bg: #f8fafc;
  --card: #ffffff;
  --ink: #333333;
  --ink-soft: #64748b;
  --line: #e1e5e9;
  --radius: 16px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

h2 {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

a { color: var(--indigo); }

/* ---- Top nav ---- */

.topnav {
  background: var(--gradient);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 12px rgba(102, 126, 234, 0.25);
}

.topnav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand { font-weight: 700; font-size: 1.15rem; color: #fff; letter-spacing: -0.01em; }
.brand-accent { opacity: 0.85; font-weight: 600; }

.topnav-links { display: flex; align-items: center; gap: 1.5rem; }
.topnav-links a { color: rgba(255, 255, 255, 0.85); text-decoration: none; font-size: 0.95rem; }
.topnav-links a:hover { color: #fff; }

.nav-cta {
  background: rgba(255, 255, 255, 0.2);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 10px;
  backdrop-filter: blur(10px);
}
.nav-cta:hover { background: rgba(255, 255, 255, 0.3); }

/* ---- Hero (app-style gradient with white copy) ---- */

.hero {
  background: var(--gradient);
  color: #fff;
  padding: 72px 0 88px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before { content: ""; width: 34px; height: 2px; background: rgba(255, 255, 255, 0.6); }

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin-bottom: 1.4rem;
}
.hero h1 em { font-style: italic; font-weight: 600; }

.sub {
  font-size: 1.08rem;
  color: rgba(255, 255, 255, 0.88);
  max-width: 34rem;
  margin-bottom: 2.2rem;
}

/* ---- Download block ---- */

.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 12px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-primary {
  background: #fff;
  color: var(--purple);
  padding: 14px 34px;
  font-size: 1.05rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2); }

.platform-toggle { display: inline-flex; gap: 6px; margin-left: 14px; vertical-align: middle; }

.platform-btn {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 8px;
  padding: 7px 13px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  font-family: inherit;
  backdrop-filter: blur(10px);
}
.platform-btn:hover { background: rgba(255, 255, 255, 0.22); }
.platform-btn.active { background: #fff; border-color: #fff; color: var(--purple); font-weight: 600; }

.version { margin-top: 0.9rem; font-size: 0.9rem; color: rgba(255, 255, 255, 0.85); }
.alt-asset { margin-left: 8px; color: #fff; }
.platform-note { font-size: 0.82rem; margin-top: 0.4rem; color: rgba(255, 255, 255, 0.75); max-width: 30rem; }
.platform-note strong { color: #fff; }
.all-releases { font-size: 0.85rem; margin-top: 0.2rem; }
.all-releases a { color: rgba(255, 255, 255, 0.75); }
.all-releases a:hover { color: #fff; }

.local-tag {
  margin-top: 2.4rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 32rem;
}

/* ---- Screenshot carousel ---- */

.hero-shots { min-width: 0; }

.carousel {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
  aspect-ratio: 3 / 2;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.carousel img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  opacity: 0;
  transition: opacity 0.7s ease;
}
.carousel img.active { opacity: 1; }

/* Placeholder tiles shown until real screenshots are dropped into docs/screenshots/ */
.mock-preview {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 22px;
}

.mock-tile {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}
.mock-tile span { font-size: 2.2rem; }

.carousel-dots { display: flex; justify-content: center; gap: 8px; margin-top: 16px; }

.carousel-dots button {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  padding: 0;
}
.carousel-dots button.active { background: #fff; }

/* ---- Sections ---- */

.tools { padding: 72px 24px; }

.grid { display: grid; gap: 24px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid.four { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1); }
.card h3 { margin-bottom: 0.6rem; font-size: 1.15rem; }
.card p { color: var(--ink-soft); font-size: 0.97rem; }

.tool-card { position: relative; overflow: hidden; }
.tool-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--accent, var(--gradient));
}
.tool-icon { font-size: 2.4rem; margin-bottom: 0.8rem; }

.providers-band {
  background: var(--gradient);
  color: #fff;
  padding: 72px 0;
}
.providers-band h2 { color: #fff; margin-bottom: 0.6rem; }
.band-sub { color: rgba(255, 255, 255, 0.85); margin-bottom: 2rem; max-width: 40rem; }
.providers-band .card.plain {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(10px);
  box-shadow: none;
}
.providers-band .card.plain:hover { transform: none; box-shadow: none; }
.providers-band .card.plain h3 { color: #fff; }
.providers-band .card.plain h3::after { content: ""; display: block; width: 28px; height: 2px; background: rgba(255, 255, 255, 0.6); margin-top: 8px; }
.providers-band .card.plain p { color: rgba(255, 255, 255, 0.8); }

.trust { padding: 80px 24px; }

.trust-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.trust-grid p { color: var(--ink-soft); font-size: 1.05rem; }

.trust-list { list-style: none; }
.trust-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.98rem;
}
.trust-list li:first-child { border-top: 1px solid var(--line); }
.trust-list strong { color: var(--ink); }

.docs-pointer { margin-top: 1.6rem; color: var(--ink-soft); font-size: 0.95rem; }

/* ---- Footer ---- */

.footer { border-top: 1px solid var(--line); padding: 28px 0; }

.footer-inner { display: flex; gap: 1.8rem; align-items: center; font-size: 0.9rem; }
.footer-inner a { color: var(--ink-soft); text-decoration: none; }
.footer-inner a:hover { color: var(--ink); }
.copyright { margin-left: auto; color: var(--ink-soft); }

/* ---- Responsive ---- */

@media (max-width: 860px) {
  .hero { padding: 48px 0 56px; }
  .hero-grid, .trust-grid { grid-template-columns: 1fr; }
  .grid.two { grid-template-columns: 1fr; }
  .grid.four { grid-template-columns: repeat(2, 1fr); }
  .platform-toggle { margin-left: 0; margin-top: 12px; display: flex; }
  .footer-inner { flex-wrap: wrap; }
  .copyright { margin-left: 0; width: 100%; }
}

@media (max-width: 520px) {
  .grid.four { grid-template-columns: 1fr; }
}