/* Landing page 3 styles (introduction_3).
   Audience: object-scan photogrammetry users (game / 3DCG asset creators).
   Own design language: dark background so 3D renders and Shorts pop,
   single teal accent, sans-serif.
   CSP: style-src 'self' — keep all styles in this file, no inline styles. */

:root {
  --lp3-bg: #0d1117;
  --lp3-bg-raised: #161c26;
  --lp3-bg-card: #1b2330;
  --lp3-border: #ffffff1f;
  --lp3-text: #e6e9ef;
  --lp3-muted: #9aa4b2;
  --lp3-accent: #3ad6c5;
  --lp3-accent-strong: #21b3a4;
  --lp3-accent-ink: #062a26;
}

body.lp3 {
  margin: 0;
  min-height: 100vh;
  background-color: var(--lp3-bg);
  color: var(--lp3-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
}

body.lp3 h1,
body.lp3 h2,
body.lp3 h3 {
  color: #ffffff;
  line-height: 1.25;
  font-weight: 700;
}
body.lp3 h1 { font-size: 2.4rem; margin: 0 0 1rem; }
body.lp3 h2 { font-size: 1.8rem; text-align: center; margin: 0 0 1rem; }
body.lp3 h3 { font-size: 1.15rem; margin: 0 0 0.5rem; }

body.lp3 a {
  color: var(--lp3-accent);
}

body.lp3 *,
body.lp3 *::before,
body.lp3 *::after {
  box-sizing: border-box;
}

.lp3-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Buttons ---------- */

body.lp3 a.lp3-btn {
  display: inline-block;
  color: var(--lp3-text);
  font-size: 1rem;
  text-decoration: none;
  text-align: center;
  background-color: #ffffff10;
  border: 1px solid var(--lp3-border);
  border-radius: 8px;
  padding: 0.6rem 1.4rem;
}
body.lp3 a.lp3-btn:hover {
  background-color: #ffffff1e;
}
body.lp3 a.lp3-btn-primary {
  color: var(--lp3-accent-ink);
  font-weight: 700;
  background-color: var(--lp3-accent);
  border-color: var(--lp3-accent);
}
body.lp3 a.lp3-btn-primary:hover {
  background-color: var(--lp3-accent-strong);
  border-color: var(--lp3-accent-strong);
}

/* ---------- Header ---------- */

.lp3-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: #0d1117e6;
  border-bottom: 1px solid var(--lp3-border);
  backdrop-filter: blur(6px);
}
.lp3-header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.8rem;
  padding-bottom: 0.8rem;
}
.lp3-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: #ffffff;
  text-decoration: none;
}

/* ---------- Hero ---------- */

.lp3-hero {
  padding: 4rem 0 3.5rem;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, #1e3a5c66, transparent);
}
.lp3-hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  align-items: center;
}
.lp3-hero-sub {
  font-size: 1.15rem;
  color: var(--lp3-muted);
  margin: 0 0 1.2rem;
}
.lp3-badges {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 0 0 1.5rem;
}
.lp3-badges li {
  border: 1px solid var(--lp3-border);
  border-radius: 999px;
  background-color: #ffffff0a;
  color: var(--lp3-text);
  font-size: 0.85rem;
  padding: 0.25rem 0.85rem;
}
.lp3-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}
.lp3-cta-note {
  color: var(--lp3-muted);
  font-size: 0.85rem;
  margin: 0.8rem 0 0;
}
.lp3-hero-figure {
  margin: 0;
  border: 1px solid var(--lp3-border);
  border-radius: 12px;
  overflow: hidden;
  background-color: var(--lp3-bg-card);
}
.lp3-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
}
.lp3-hero-figure figcaption {
  color: var(--lp3-muted);
  font-size: 0.85rem;
  padding: 0.6rem 0.9rem;
  border-top: 1px solid var(--lp3-border);
}

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

.lp3-section {
  padding: 3.5rem 0;
}
.lp3-section-alt {
  background-color: var(--lp3-bg-raised);
  border-top: 1px solid var(--lp3-border);
  border-bottom: 1px solid var(--lp3-border);
}
.lp3-section-lead {
  text-align: center;
  color: var(--lp3-muted);
  max-width: 720px;
  margin: 0 auto 2rem;
}

.lp3-card {
  background-color: var(--lp3-bg-card);
  border: 1px solid var(--lp3-border);
  border-radius: 12px;
  padding: 1.4rem;
}

/* ---------- Shorts gallery ---------- */

.lp3-shorts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}
.lp3-short {
  min-width: 0;
  background-color: var(--lp3-bg-card);
  border: 1px solid var(--lp3-border);
  border-radius: 12px;
  overflow: hidden;
}
.lp3-short iframe {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  aspect-ratio: 9 / 16;
  border: 0;
  background-color: #000000;
}
.lp3-short figcaption {
  color: var(--lp3-muted);
  font-size: 0.82rem;
  padding: 0.5rem 0.8rem;
}
.lp3-shorts-note {
  text-align: center;
  color: var(--lp3-muted);
  font-size: 0.9rem;
  margin: 1.5rem 0 0;
}

/* ---------- "Real photogrammetry" section ---------- */

.lp3-real {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.lp3-real-card h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.lp3-real-tag {
  display: inline-block;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.15rem 0.7rem;
}
.lp3-real-tag-yes {
  color: var(--lp3-accent-ink);
  background-color: var(--lp3-accent);
}
.lp3-real-tag-no {
  color: #ffd9d9;
  background-color: #7a2e2e;
}
.lp3-real p {
  color: var(--lp3-muted);
  margin: 0;
}
.lp3-real-note {
  text-align: center;
  color: var(--lp3-muted);
  font-size: 0.95rem;
  max-width: 760px;
  margin: 1.6rem auto 0;
}

/* ---------- Use cases ---------- */

.lp3-usecases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.lp3-usecases p {
  color: var(--lp3-muted);
  margin: 0;
}

/* ---------- Steps ---------- */

.lp3-steps {
  list-style: none;
  counter-reset: lp3step;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 0;
  margin: 0;
}
.lp3-steps li {
  counter-increment: lp3step;
  background-color: var(--lp3-bg-card);
  border: 1px solid var(--lp3-border);
  border-radius: 12px;
  padding: 1.4rem;
}
.lp3-steps li::before {
  content: counter(lp3step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background-color: var(--lp3-accent);
  color: var(--lp3-accent-ink);
  font-weight: 700;
  margin-bottom: 0.7rem;
}
.lp3-steps p {
  color: var(--lp3-muted);
  margin: 0;
}

/* ---------- Pricing ---------- */

.lp3-free-card {
  text-align: center;
  background-color: var(--lp3-bg-card);
  border: 1px solid var(--lp3-accent);
  border-radius: 12px;
  padding: 1.6rem;
  margin-bottom: 1.5rem;
}
.lp3-free-card p {
  color: var(--lp3-muted);
  margin: 0.4rem 0 1rem;
}
.lp3-plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.lp3-plan {
  position: relative;
  background-color: var(--lp3-bg-card);
  border: 1px solid var(--lp3-border);
  border-radius: 12px;
  padding: 1.4rem;
}
.lp3-plan-featured {
  border-color: var(--lp3-accent);
}
.lp3-plan-tag {
  position: absolute;
  top: -0.8rem;
  left: 1rem;
  background-color: var(--lp3-accent);
  color: var(--lp3-accent-ink);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 999px;
  padding: 0.15rem 0.7rem;
}
.lp3-plan-spec {
  color: var(--lp3-muted);
  font-size: 0.85rem;
  margin: 0 0 0.8rem;
}
.lp3-plan-price {
  font-size: 1.7rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
}
.lp3-plan-price span {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--lp3-muted);
}
.lp3-plan-after {
  color: var(--lp3-muted);
  font-size: 0.85rem;
  margin: 0.2rem 0 0.8rem;
}
.lp3-plan ul {
  color: var(--lp3-muted);
  font-size: 0.9rem;
  padding-left: 1.1rem;
  margin: 0;
}
.lp3-pricing-notes {
  color: var(--lp3-muted);
  font-size: 0.85rem;
  max-width: 760px;
  margin: 1.5rem auto 0;
  padding-left: 1.1rem;
}
.lp3-pricing-cta {
  text-align: center;
  margin-top: 1.5rem;
}

/* ---------- FAQ ---------- */

.lp3-faq {
  max-width: 760px;
  margin: 0 auto;
}
.lp3-faq details {
  background-color: var(--lp3-bg-card);
  border: 1px solid var(--lp3-border);
  border-radius: 12px;
  padding: 0.9rem 1.2rem;
  margin-bottom: 0.7rem;
}
.lp3-faq summary {
  cursor: pointer;
  font-weight: 600;
}
.lp3-faq p {
  color: var(--lp3-muted);
  margin: 0.7rem 0 0;
}

/* ---------- Final CTA ---------- */

.lp3-final {
  text-align: center;
  padding: 4rem 0;
  background: radial-gradient(ellipse 70% 80% at 50% 110%, #1e3a5c66, transparent);
}
.lp3-final p {
  color: var(--lp3-muted);
  max-width: 640px;
  margin: 0 auto 1.5rem;
}
.lp3-final .lp3-cta-row {
  justify-content: center;
}

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

.lp3-footer {
  border-top: 1px solid var(--lp3-border);
  padding: 1.5rem 0;
  color: var(--lp3-muted);
  font-size: 0.85rem;
}
.lp3-footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
}
.lp3-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.lp3-footer a {
  color: var(--lp3-muted);
}

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

@media (max-width: 900px) {
  body.lp3 h1 { font-size: 1.8rem; }
  body.lp3 h2 { font-size: 1.5rem; }
  .lp3-hero { padding: 2.5rem 0; }
  .lp3-hero-grid,
  .lp3-real,
  .lp3-usecases,
  .lp3-plans {
    grid-template-columns: 1fr;
  }
  .lp3-steps {
    grid-template-columns: 1fr 1fr;
  }
  .lp3-shorts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .lp3-plan-featured {
    order: -1;
  }
}

@media (max-width: 520px) {
  .lp3-steps {
    grid-template-columns: 1fr;
  }
  .lp3-shorts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}