/* PADI v8 landing page — wapka-inspired, fully responsive
   Purple→blue gradient hero, big counter, clean feature grid, pricing cards.
   Mobile-first: works perfectly on phones, scales up to desktop.
*/

/* ====== NAV ====== */
.landing-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.2s, box-shadow 0.2s;
  padding: 16px 0;
}
.landing-nav.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  padding: 10px 0;
}
.dark-theme .landing-nav.scrolled {
  background: rgba(15,15,20,0.95);
}
.landing-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.landing-brand {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #fff, #fff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: white;
  transition: color 0.2s;
}
.landing-nav.scrolled .landing-brand {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  -webkit-background-clip: text;
  background-clip: text;
  color: #6366f1;
}
.landing-brand .brand-dot {
  -webkit-text-fill-color: #f59e0b;
  color: #f59e0b;
}
.landing-nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}
.landing-nav-links a {
  color: rgba(255,255,255,0.9);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s;
}
.landing-nav.scrolled .landing-nav-links a {
  color: var(--fg);
}
.landing-nav-links a:hover { opacity: 0.7; }
.landing-nav-login {
  color: white !important;
}
.landing-nav.scrolled .landing-nav-login {
  color: var(--accent) !important;
}
.landing-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  padding: 4px 8px;
}
.landing-nav.scrolled .landing-nav-toggle { color: var(--fg); }

/* ====== HERO ====== */
.landing-hero {
  position: relative;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #6366f1 100%);
  min-height: 90vh;
  min-height: 90dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 20px 80px;
  overflow: hidden;
}
.landing-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(139, 92, 246, 0.4) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(99, 102, 241, 0.4) 0%, transparent 50%);
  animation: heroPulse 8s ease-in-out infinite;
}
@keyframes heroPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}
.landing-hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}
.landing-hero-title {
  color: white;
  font-size: clamp(28px, 6vw, 56px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
}
.landing-hero-title .accent {
  background: rgba(255,255,255,0.2);
  padding: 0 8px;
  border-radius: 8px;
  display: inline-block;
}
.landing-hero-sub {
  color: rgba(255,255,255,0.9);
  font-size: clamp(15px, 2.5vw, 20px);
  margin-bottom: 32px;
  line-height: 1.5;
}
.landing-hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.landing-hero-cta .btn-primary {
  background: white;
  color: #6366f1;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  border: none;
}
.landing-hero-cta .btn-ghost {
  background: rgba(255,255,255,0.15);
  color: white;
  border: 1px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(4px);
}
.landing-stats {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
}
.landing-stat {
  text-align: center;
}
.landing-stat-num {
  color: white;
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.landing-stat-label {
  color: rgba(255,255,255,0.8);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.landing-wave {
  position: absolute;
  bottom: -1px;
  left: 0; right: 0;
  line-height: 0;
}
.landing-wave svg {
  width: 100%;
  height: 60px;
  fill: var(--bg);
}
.dark-theme .landing-wave svg { fill: var(--bg); }

/* ====== SECTIONS ====== */
.landing-section {
  padding: 80px 20px;
}
.landing-section-alt {
  background: var(--bg-subtle);
}
.landing-container {
  max-width: 1200px;
  margin: 0 auto;
}
.landing-section-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.landing-section-sub {
  text-align: center;
  color: var(--fg-muted);
  font-size: clamp(14px, 2vw, 18px);
  margin-bottom: 48px;
}

/* ====== FEATURES GRID ====== */
.landing-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.landing-feature {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  padding: 28px;
  text-align: center;
  transition: transform 0.15s, box-shadow 0.15s;
}
.landing-feature:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.08);
}
.landing-feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}
.landing-feature h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.landing-feature p {
  color: var(--fg-muted);
  font-size: 14px;
  line-height: 1.5;
}

/* ====== SHOWCASE ====== */
.landing-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.landing-showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  padding: 16px;
  display: flex;
  gap: 14px;
  align-items: center;
  text-decoration: none;
  color: inherit;
  transition: transform 0.1s;
}
.landing-showcase-card:active { transform: scale(0.98); }
.landing-showcase-avatar {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 18px;
  flex-shrink: 0;
}
.landing-showcase-info { flex: 1; min-width: 0; }
.landing-showcase-info strong { font-size: 15px; }
.landing-showcase-info p { margin: 2px 0; }

/* ====== PRICING ====== */
.landing-pricing {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 700px;
  margin: 0 auto;
}
.landing-pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 20px;
  padding: 32px 24px;
  text-align: center;
}
.landing-pricing-featured {
  border: 2px solid #6366f1;
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.2);
  position: relative;
}
.landing-price {
  font-size: 48px;
  font-weight: 800;
  margin: 16px 0;
  color: var(--fg);
}
.landing-price sup { font-size: 20px; vertical-align: super; }
.landing-price span { font-size: 16px; color: var(--fg-muted); font-weight: 400; }
.landing-pricing-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  text-align: left;
}
.landing-pricing-list li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--fg);
  border-bottom: 1px solid var(--border-soft);
}
.landing-pricing-list li:last-child { border: none; }

/* ====== FINAL CTA ====== */
.landing-cta {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  padding: 80px 20px;
  text-align: center;
}
.landing-cta h2 {
  color: white;
  font-size: clamp(24px, 4vw, 36px);
  margin-bottom: 12px;
}
.landing-cta p {
  color: rgba(255,255,255,0.9);
  margin-bottom: 24px;
}
.landing-cta .btn-primary {
  background: white;
  color: #6366f1;
  border: none;
}

/* ====== FOOTER ====== */
.landing-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-soft);
  padding: 48px 20px 24px;
}
.landing-footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.landing-footer-grid h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--fg);
}
.landing-footer-grid a {
  display: block;
  padding: 4px 0;
  color: var(--fg-muted);
  font-size: 13px;
  text-decoration: none;
}
.landing-footer-grid a:hover { color: var(--accent); }
.landing-footer-bottom {
  text-align: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-soft);
}

/* ====== RESPONSIVE ====== */
@media (max-width: 768px) {
  .landing-nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--bg-card);
    flex-direction: column;
    padding: 16px 20px;
    gap: 12px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
  }
  .landing-nav-links.open { display: flex; }
  .landing-nav-links a { color: var(--fg) !important; }
  .landing-nav-toggle { display: block; }
  .landing-stats { gap: 20px; }
  .landing-hero { min-height: 80vh; padding: 80px 16px 60px; }
  .landing-section { padding: 60px 16px; }
  .landing-features-grid { grid-template-columns: 1fr; }
  .landing-pricing { grid-template-columns: 1fr; }
  .landing-footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}

@media (max-width: 480px) {
  .landing-hero-title { font-size: 28px; }
  .landing-hero-sub { font-size: 15px; }
  .landing-hero-cta { flex-direction: column; }
  .landing-hero-cta .btn { width: 100%; }
  .landing-stats { gap: 16px; }
  .landing-stat-num { font-size: 24px; }
  .landing-footer-grid { grid-template-columns: 1fr; }
}

/* ====== DARK THEME OVERRIDES ====== */
.dark-theme .landing-nav.scrolled {
  background: rgba(15,15,20,0.95);
}
.dark-theme .landing-feature,
.dark-theme .landing-showcase-card,
.dark-theme .landing-pricing-card,
.dark-theme .landing-footer {
  background: var(--bg-card);
}