/* ═══ PDCAhub Landing Page Styles ═════════════════════════════════════════ */

/* ── Nav ─────────────────────────────────────────────────────────────────── */
.land-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(15, 17, 23, 0.85); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.land-nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: 64px;
}
.land-nav-brand {
  display: flex; align-items: center; gap: 8px;
  font-size: 22px; font-weight: 800; color: var(--text); text-decoration: none;
}
.land-nav-brand strong { color: var(--accent); font-weight: 800; }
.land-nav-logo { width: 32px; height: 32px; border-radius: 6px; }
.land-nav-links { display: flex; align-items: center; gap: 24px; }
.land-nav-links a {
  color: var(--text-muted); text-decoration: none; font-size: 14px; transition: color 0.15s;
}
.land-nav-links a:hover { color: var(--text); }
.land-nav-login { font-weight: 600; }
.land-nav-cta { padding: 8px 20px; }
.land-nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 24px; cursor: pointer; }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.land-hero {
  position: relative; padding: 120px 24px 80px; text-align: center; overflow: hidden;
}
.land-hero-bg {
  position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(ellipse at 30% 0%, rgba(79,124,255,0.15), transparent 60%),
              radial-gradient(ellipse at 70% 30%, rgba(0,212,170,0.12), transparent 60%);
}
.land-hero-content { max-width: 800px; margin: 0 auto; }
.land-hero-badge {
  display: inline-block; background: var(--surface2); border: 1px solid var(--border);
  border-radius: 20px; padding: 6px 16px; font-size: 13px; color: var(--accent);
  margin-bottom: 24px;
}
.land-hero-title {
  font-size: clamp(28px, 5vw, 52px); font-weight: 800; line-height: 1.15; margin-bottom: 20px;
}
.grad-text {
  background: linear-gradient(135deg, #4f7cff, #00d4aa); -webkit-background-clip: text;
  background-clip: text; -webkit-text-fill-color: transparent;
}
.land-hero-sub {
  font-size: 17px; color: var(--text-muted); max-width: 600px; margin: 0 auto 32px; line-height: 1.6;
}
.land-hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 48px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.land-hero-stats { display: flex; gap: 40px; justify-content: center; flex-wrap: wrap; }
.land-hero-stat { text-align: center; }
.land-hero-stat strong { display: block; font-size: 32px; font-weight: 800; color: var(--accent); }
.land-hero-stat small { color: var(--text-muted); font-size: 13px; }

/* ── Trust Bar ──────────────────────────────────────────────────────────── */
.land-trust {
  background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 16px 24px; overflow: hidden;
}
.land-trust-inner {
  max-width: 1200px; margin: 0 auto; display: flex; gap: 32px; flex-wrap: wrap; justify-content: center;
}
.land-trust-item { font-size: 13px; color: var(--text-muted); white-space: nowrap; }

/* ── Sections ────────────────────────────────────────────────────────────── */
.land-section { padding: 80px 24px; }
.land-section-alt { background: var(--surface); }
.land-section-inner { max-width: 1200px; margin: 0 auto; }
.land-section-title {
  font-size: clamp(24px, 4vw, 36px); font-weight: 800; text-align: center; margin-bottom: 12px;
}
.land-section-sub {
  text-align: center; color: var(--text-muted); font-size: 16px; margin-bottom: 48px;
}

/* ── Features Grid ───────────────────────────────────────────────────────── */
.land-features-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px;
}
.land-feature-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; transition: border-color 0.15s, transform 0.15s;
}
.land-feature-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.land-feature-icon { font-size: 32px; margin-bottom: 12px; }
.land-feature-card h3 { font-size: 16px; margin-bottom: 8px; }
.land-feature-card p { font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.land-feature-tag {
  display: inline-block; margin-top: 10px; background: var(--surface2);
  border-radius: 8px; padding: 2px 10px; font-size: 11px; color: var(--accent); font-weight: 600;
}

/* ── Gallery ─────────────────────────────────────────────────────────────── */
.land-gallery {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 20px;
}
.land-gallery-item {
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  transition: transform 0.15s;
}
.land-gallery-item:hover { transform: translateY(-4px); }
.land-gallery-item img { width: 100%; height: auto; display: block; }
.land-gallery-label {
  display: block; padding: 10px 14px; font-size: 12px; color: var(--text-muted);
  background: var(--surface2);
}

/* ── Demo Cards ─────────────────────────────────────────────────────────── */
.land-demo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.land-demo-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; text-align: center;
}
.land-demo-industry {
  display: inline-block; background: var(--surface2); border-radius: 12px;
  padding: 2px 12px; font-size: 12px; color: var(--accent); margin-bottom: 12px;
}
.land-demo-card h3 { margin-bottom: 8px; }
.land-demo-card p { font-size: 13px; color: var(--text-muted); margin-bottom: 12px; line-height: 1.5; }
.land-demo-card code {
  display: block; background: var(--bg); border-radius: 6px; padding: 8px; font-size: 12px;
  margin-bottom: 16px; color: var(--text-muted);
}
.land-demo-note {
  text-align: center; margin-top: 24px; padding: 16px; background: var(--surface2);
  border-radius: var(--radius); color: var(--text-muted); font-size: 13px;
}

/* ── Pricing ─────────────────────────────────────────────────────────────── */
.land-pricing-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px;
  max-width: 1000px; margin: 0 auto;
}
.land-pricing-card {
  background: var(--surface); border: 2px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; text-align: center; position: relative; transition: border-color 0.15s;
}
.land-pricing-card:hover { border-color: var(--primary); }
.land-pricing-featured { border-color: var(--primary); transform: scale(1.03); }
.land-pricing-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: white; padding: 3px 14px; border-radius: 12px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.5px;
}
.land-pricing-card h3 { font-size: 18px; margin-bottom: 4px; }
.land-pricing-price { font-size: 40px; font-weight: 800; margin: 12px 0 4px; }
.land-pricing-price small { font-size: 14px; color: var(--text-muted); font-weight: 400; }
.land-pricing-desc { color: var(--text-muted); font-size: 13px; margin-bottom: 20px; }
.land-pricing-features { text-align: left; margin-bottom: 24px; }
.land-pricing-features li {
  list-style: none; padding: 5px 0; font-size: 13px; color: var(--text-muted);
}
.land-pricing-no { color: #555 !important; opacity: 0.5; }
.btn-block { display: block; width: 100%; }
.land-pricing-note { text-align: center; color: var(--text-muted); font-size: 12px; margin-top: 24px; }

/* ── FAQ ─────────────────────────────────────────────────────────────────── */
.land-faq-inner { max-width: 800px; margin: 0 auto; }
.land-faq-item {
  border-bottom: 1px solid var(--border); padding: 16px 0;
}
.land-faq-item h3 { font-size: 15px; margin-bottom: 6px; }
.land-faq-item p { font-size: 14px; color: var(--text-muted); line-height: 1.5; }

/* ── CTA Final ───────────────────────────────────────────────────────────── */
.land-cta-final {
  background: linear-gradient(135deg, #0f3460, #16213e); padding: 80px 24px; text-align: center;
}
.land-cta-inner { max-width: 600px; margin: 0 auto; }
.land-cta-final h2 { font-size: 28px; margin-bottom: 12px; }
.land-cta-final p { color: rgba(255,255,255,0.7); margin-bottom: 24px; font-size: 16px; }
.land-cta-final small { display: block; margin-top: 12px; color: rgba(255,255,255,0.4); font-size: 13px; }

/* ── Footer ───────────────────────────────────────────────────────────────── */
.land-footer { background: var(--surface); border-top: 1px solid var(--border); padding: 48px 24px 24px; }
.land-footer-inner {
  max-width: 1200px; margin: 0 auto; display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 32px;
}
.land-footer-col h4 { font-size: 14px; margin-bottom: 12px; }
.land-footer-col a, .land-footer-col p {
  display: block; font-size: 13px; color: var(--text-muted); text-decoration: none; margin-bottom: 6px;
}
.land-footer-col a:hover { color: var(--text); }
.land-footer-logo { width: 40px; height: 40px; border-radius: 8px; margin-bottom: 12px; }
.land-footer-bottom {
  max-width: 1200px; margin: 32px auto 0; padding-top: 20px; border-top: 1px solid var(--border);
  text-align: center;
}
.land-footer-bottom p { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .land-nav-links { display: none; }
  .land-nav-links.land-nav-mobile-open {
    display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0;
    background: var(--surface); border-bottom: 1px solid var(--border); padding: 16px; gap: 12px;
  }
  .land-nav-toggle { display: block; }
  .land-hero { padding-top: 100px 16px 60px; }
  .land-hero-stats { gap: 20px; }
  .land-hero-stat strong { font-size: 24px; }
  .land-section { padding: 48px 16px; }
  .land-footer-inner { grid-template-columns: 1fr 1fr; gap: 20px; }
  .land-pricing-featured { transform: none; }
  .land-gallery { grid-template-columns: 1fr; }
}