/* Premium sitewide animations & UI layer (v4.3) */

:root {
  --border-color: var(--border);
  --premium-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --premium-glow: 0 0 60px rgba(99, 102, 241, 0.15);
}

/* ─── Scroll reveal ─── */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--premium-ease), transform 0.7s var(--premium-ease);
}
.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-stagger > .reveal-on-scroll:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger > .reveal-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger > .reveal-on-scroll:nth-child(3) { transition-delay: 0.15s; }
.reveal-stagger > .reveal-on-scroll:nth-child(4) { transition-delay: 0.2s; }
.reveal-stagger > .reveal-on-scroll:nth-child(5) { transition-delay: 0.25s; }
.reveal-stagger > .reveal-on-scroll:nth-child(6) { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  .reveal-on-scroll { opacity: 1; transform: none; transition: none; }
  .hero-mesh, .floating-orb, .premium-shimmer, .page-hero::before { animation: none !important; }
}

/* ─── Header scroll state ─── */
.site-header {
  transition: height 0.35s var(--premium-ease), box-shadow 0.35s var(--premium-ease), background 0.35s ease;
}
.site-header.is-scrolled {
  box-shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
}
[data-theme="dark"] .site-header.is-scrolled {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

/* ─── Logo theme swap ─── */
.site-logo { height: 32px; width: auto; display: block; }
.site-logo--dark { display: none; }
[data-theme="dark"] .site-logo--light { display: none; }
[data-theme="dark"] .site-logo--dark { display: block; }

/* ─── Premium card (animated border) ─── */
.premium-card {
  position: relative;
  overflow: hidden;
}
.premium-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), #ec4899, var(--accent));
  background-size: 300% 100%;
  animation: premiumGradient 4s ease infinite;
  opacity: 0;
  transition: opacity 0.35s ease;
}
.premium-card:hover::before,
.premium-card.is-featured::before { opacity: 1; }
@keyframes premiumGradient {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.card-glass.premium-card:hover {
  transform: translateY(-4px);
}

/* ─── Page hero (static/legal/listing pages) ─── */
.page-hero {
  text-align: center;
  padding: 40px 28px 44px;
  margin-bottom: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 80% at 50% -20%, var(--accent-glow), transparent 65%),
    radial-gradient(ellipse 40% 50% at 100% 100%, var(--mesh-2), transparent 60%);
  pointer-events: none;
}
.page-hero__icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 24px var(--accent-glow);
  position: relative; z-index: 1;
}
.page-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
  position: relative; z-index: 1;
}
.page-hero p {
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.65;
  position: relative; z-index: 1;
}

/* ─── Prose (legal/content) ─── */
.prose h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 28px 0 10px;
}
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { margin-bottom: 12px; }
.prose ul, .prose ol { padding-left: 1.25rem; margin-bottom: 16px; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }

.legal-page { max-width: 820px; margin: 0 auto; }

/* ─── Hero enhancements ─── */
.hero {
  border: 1px solid var(--border);
  box-shadow: var(--premium-glow);
}
.hero .floating-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  pointer-events: none;
  animation: floatOrb 8s ease-in-out infinite;
}
.hero .floating-orb--1 {
  width: 180px; height: 180px;
  top: -40px; left: 10%;
  background: rgba(99, 102, 241, 0.25);
}
.hero .floating-orb--2 {
  width: 140px; height: 140px;
  bottom: -20px; right: 15%;
  background: rgba(139, 92, 246, 0.2);
  animation-delay: -3s;
}
@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(12px, -16px) scale(1.08); }
}

.btn-primary {
  position: relative;
  overflow: hidden;
}
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.18) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}
.btn-primary:hover::after { transform: translateX(100%); }

/* ─── Tool card premium shine ─── */
.tool-card::after {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: linear-gradient(45deg, transparent 45%, rgba(255,255,255,0.06) 50%, transparent 55%);
  transform: rotate(25deg) translateY(100%);
  transition: transform 0.6s ease;
  pointer-events: none;
}
.tool-card:hover::after { transform: rotate(25deg) translateY(-30%); }

/* ─── Features strip (homepage) ─── */
.features-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}
.feature-chip {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.feature-chip:hover {
  border-color: rgba(99, 102, 241, 0.35);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.feature-chip__icon {
  width: 42px; height: 42px; flex-shrink: 0;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-glow);
  color: var(--accent);
  font-size: 1.1rem;
}
.feature-chip strong { display: block; font-size: 0.92rem; margin-bottom: 4px; }
.feature-chip span { font-size: 0.82rem; color: var(--text-muted); line-height: 1.45; }

/* ─── Pricing premium ─── */
.pricing-card {
  position: relative;
  transition: transform 0.35s var(--premium-ease), box-shadow 0.35s ease;
}
.pricing-card:hover {
  transform: translateY(-8px) scale(1.02);
}
.pricing-card.featured {
  animation: pricingPulse 3s ease-in-out infinite;
}
@keyframes pricingPulse {
  0%, 100% { box-shadow: 0 0 40px var(--accent-glow); }
  50% { box-shadow: 0 0 60px rgba(99, 102, 241, 0.35); }
}

/* ─── Dashboard stat cards ─── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.stat-card {
  padding: 22px 20px;
  text-align: center;
  transition: transform 0.3s var(--premium-ease);
}
.stat-card:hover { transform: translateY(-4px); }
.stat-card__icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 10px;
  opacity: 0.9;
}
.stat-card strong {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
}

/* ─── 404 page ─── */
.error-page {
  text-align: center;
  padding: 60px 24px 80px;
  max-width: 520px;
  margin: 0 auto;
}
.error-page__code {
  font-size: clamp(5rem, 18vw, 8rem);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent), var(--accent-2), #ec4899);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: errorFloat 3s ease-in-out infinite;
}
@keyframes errorFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.error-page p { color: var(--text-secondary); margin: 20px 0 32px; font-size: 1.05rem; }

/* ─── Auth premium ─── */
.auth-card {
  box-shadow: var(--shadow-lg), var(--premium-glow);
}
.auth-card.premium-card::before { opacity: 0.6; }
.auth-card .google-btn { margin-bottom: 4px; }

/* ─── Category hero upgrade ─── */
.category-hero {
  position: relative;
  overflow: hidden;
}
.category-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, var(--accent-glow), transparent 70%);
  opacity: 0.5;
  pointer-events: none;
}

/* ─── Footer fade ─── */
.site-footer .footer-links a {
  transition: color var(--transition), transform 0.2s ease;
}
.site-footer .footer-links a:hover {
  transform: translateX(4px);
}

/* ─── Mobile bottom nav slide up ─── */
@keyframes navSlideUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.mobile-bottom-nav {
  animation: navSlideUp 0.5s var(--premium-ease) both;
}

/* ─── Section title accent ─── */
.section-head h2 {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ─── Pro CTA banner ─── */
.pro-cta-banner {
  text-align: center;
  background: linear-gradient(135deg, rgba(99,102,241,0.14), rgba(139,92,246,0.08));
  border: 1px solid rgba(99, 102, 241, 0.2);
  position: relative;
  overflow: hidden;
}
.pro-cta-banner::before {
  content: '';
  position: absolute;
  inset: -50%;
  background: conic-gradient(from 0deg, transparent, rgba(99,102,241,0.08), transparent 30%);
  animation: premiumSpin 12s linear infinite;
}
@keyframes premiumSpin { to { transform: rotate(360deg); } }
.pro-cta-banner > * { position: relative; z-index: 1; }

/* ─── Android APK header button ─── */
.btn-apk-download {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-decoration: none;
  color: #fff;
  background: linear-gradient(135deg, #3ddc84, #1b8f4a);
  border: 1px solid rgba(61, 220, 132, 0.4);
  box-shadow: 0 4px 14px rgba(61, 220, 132, 0.25);
  transition: transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn-apk-download:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(61, 220, 132, 0.35);
}
.btn-apk-download.is-pending {
  background: linear-gradient(135deg, #64748b, #334155);
  border-color: rgba(148, 163, 184, 0.38);
  box-shadow: 0 4px 14px rgba(51, 65, 85, 0.22);
}
.btn-apk-download i { font-size: 1rem; }
@media (max-width: 640px) {
  .btn-apk-download .apk-label { display: none; }
  .btn-apk-download { padding: 8px 10px; min-width: 36px; min-height: 36px; justify-content: center; }
}

[data-theme="dark"] .google-btn {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.listing-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.listing-header h1 {
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

/* ─── Compact premium polish ─── */
.page-hero {
  padding: 28px 20px 30px;
  margin-bottom: 16px;
  border-radius: 14px;
}
.page-hero__icon {
  width: 46px;
  height: 46px;
  margin-bottom: 12px;
  border-radius: 14px;
  font-size: 1.15rem;
}
.page-hero h1 {
  font-size: clamp(1.45rem, 3.4vw, 2rem);
  margin-bottom: 7px;
}
.page-hero p {
  font-size: 0.92rem;
  max-width: 520px;
}
.legal-page { max-width: 760px; }
.prose h2 { margin: 20px 0 8px; font-size: 1rem; }
.prose p,
.prose li { margin-bottom: 9px; font-size: 0.92rem; }
.prose ul,
.prose ol { margin-bottom: 12px; }
.category-hero {
  padding: 24px 18px;
  margin-bottom: 14px;
}
.category-hero h1 { font-size: clamp(1.35rem, 3.2vw, 1.9rem); }
.listing-header {
  margin-bottom: 14px;
  padding-bottom: 12px;
}
.listing-header h1 {
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  margin-bottom: 5px;
}
.listing-header p { font-size: 0.9rem; color: var(--text-secondary); }
.pricing-card { border-radius: 14px; }
.pricing-card:hover { transform: translateY(-3px); }
.btn-apk-download {
  padding: 6px 10px;
  font-size: 0.72rem;
}
@media (max-width: 640px) {
  .page-hero { padding: 24px 14px 26px; }
  .page-hero__icon { width: 42px; height: 42px; }
  .listing-header { margin-bottom: 12px; }
}