/* ============================================
   ShieldBlock – Landing Page Styles
   GitHub Pages – Dark Premium Design
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  --bg-primary: #0a0a1a;
  --bg-secondary: #111128;
  --bg-card: #16163a;
  --bg-glass: rgba(22, 22, 58, 0.65);
  --text-primary: #e8e8f0;
  --text-secondary: #9d9db8;
  --text-muted: #6b6b8a;
  --accent-purple: #7c4dff;
  --accent-blue: #4f8cff;
  --accent-cyan: #00d2ff;
  --accent-green: #0f9b58;
  --accent-orange: #ff6d00;
  --gradient-hero: linear-gradient(135deg, #7c4dff 0%, #4f8cff 50%, #00d2ff 100%);
  --shadow-glow: 0 8px 40px rgba(124, 77, 255, 0.25);
  --radius-md: 16px;
  --radius-lg: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
[hidden] { display: none !important; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Language Switcher ── */
.lang-switcher {
  position: fixed; top: 16px; right: 16px; z-index: 100;
  display: flex; gap: 4px; padding: 4px;
  background: var(--bg-glass); backdrop-filter: blur(16px);
  border-radius: 100px; border: 1px solid rgba(255,255,255,0.08);
}
.lang-btn {
  padding: 6px 14px; border: none; border-radius: 100px;
  background: transparent; color: var(--text-muted);
  font-size: 13px; font-weight: 700; cursor: pointer;
  font-family: inherit; transition: all var(--transition);
}
.lang-btn:hover { color: var(--text-primary); }
.lang-btn--active {
  background: var(--accent-purple); color: #fff;
}

/* ── Background Animation ── */
.bg-animation { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(120px); opacity: 0.1; animation: orbFloat 20s ease-in-out infinite; }
.orb:nth-child(1) { width: 600px; height: 600px; background: var(--accent-purple); top: -10%; right: -10%; animation-duration: 25s; }
.orb:nth-child(2) { width: 500px; height: 500px; background: var(--accent-blue); bottom: -10%; left: -10%; animation-duration: 30s; animation-delay: -5s; }
.orb:nth-child(3) { width: 350px; height: 350px; background: var(--accent-cyan); top: 50%; left: 50%; animation-duration: 22s; animation-delay: -10s; }
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -60px) scale(1.08); }
  66% { transform: translate(-30px, 40px) scale(0.95); }
}

.app-wrapper { position: relative; z-index: 1; }

/* ── Scroll Animations ── */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in:nth-child(2) { transition-delay: 0.1s; }
.fade-in:nth-child(3) { transition-delay: 0.2s; }
.fade-in:nth-child(4) { transition-delay: 0.3s; }
.fade-in:nth-child(5) { transition-delay: 0.4s; }
.fade-in:nth-child(6) { transition-delay: 0.5s; }

/* ── Hero ── */
.hero { text-align: center; padding: 80px 24px 40px; }
.hero__shield {
  display: inline-flex; align-items: center; justify-content: center;
  width: 96px; height: 96px; border-radius: 50%;
  background: var(--gradient-hero); font-size: 48px; margin-bottom: 24px;
  box-shadow: var(--shadow-glow);
  animation: shieldPulse 3s ease-in-out infinite;
}
@keyframes shieldPulse {
  0%, 100% { box-shadow: 0 0 30px rgba(124, 77, 255, 0.3); transform: scale(1); }
  50% { box-shadow: 0 0 60px rgba(124, 77, 255, 0.5), 0 0 100px rgba(79, 140, 255, 0.2); transform: scale(1.05); }
}
.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 900; letter-spacing: -0.02em;
  background: var(--gradient-hero); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: 12px;
}
.hero__version-badge {
  color: var(--accent-purple); font-size: 14px; font-weight: 700;
  letter-spacing: 0.08em; margin-bottom: 16px;
  animation: badgePulse 2s ease-in-out infinite;
}
@keyframes badgePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.15rem); color: var(--text-secondary);
  max-width: 620px; margin: 0 auto 16px; line-height: 1.7;
}
.hero__subtitle strong { color: var(--text-primary); }
.hero__solo {
  font-size: 14px; color: var(--text-secondary); max-width: 520px;
  margin: 0 auto 28px; line-height: 1.7;
}
.hero__solo strong { color: var(--text-primary); }

/* ── Badges ── */
.badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 20px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 100px;
  background: var(--bg-glass); backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.08);
  font-size: 13px; font-weight: 600; color: var(--text-secondary);
  transition: all var(--transition);
}
.badge:hover { border-color: rgba(124,77,255,0.3); color: var(--text-primary); transform: translateY(-2px); }
.badge__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-green); animation: dotBlink 2s ease-in-out infinite; }
@keyframes dotBlink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

/* ── Stats Counter ── */
.stats-section { max-width: 900px; margin: 0 auto 60px; padding: 0 24px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card {
  text-align: center; padding: 28px 16px; border-radius: var(--radius-md);
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.06);
  transition: all var(--transition);
}
.stat-card:hover { transform: translateY(-4px); border-color: rgba(124,77,255,0.2); box-shadow: 0 12px 40px rgba(0,0,0,0.3); }
.stat-card__number {
  display: block; font-size: 2rem; font-weight: 900;
  background: var(--gradient-hero); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 4px;
}
.stat-card__label { font-size: 12px; color: var(--text-secondary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }

/* ── Section Titles ── */
.section-title { text-align: center; font-size: 1.5rem; font-weight: 800; margin-bottom: 12px; }
.section-desc { text-align: center; color: var(--text-secondary); margin-bottom: 32px; font-size: 15px; }

/* ── Download Buttons ── */
.download-section { text-align: center; max-width: 700px; margin: 0 auto 70px; padding: 0 24px; }
.download-buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.btn-download {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 32px; border-radius: 14px;
  font-size: 16px; font-weight: 700; color: #fff;
  text-decoration: none; border: none; cursor: pointer;
  transition: all var(--transition); position: relative; overflow: hidden;
}
.btn-download::before {
  content: ''; position: absolute; inset: 0;
  background: rgba(255,255,255,0.1); opacity: 0;
  transition: opacity var(--transition);
}
.btn-download:hover::before { opacity: 1; }
.btn-download:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.4); }
.btn-download:active { transform: translateY(0) scale(0.98); }
.btn-download--chrome { background: linear-gradient(135deg, #4f8cff, #1a73e8); }
.btn-download--firefox { background: linear-gradient(135deg, #ff6d00, #e65100); }
.btn-download__icon { font-size: 22px; }
.btn-download__text small { display: block; font-size: 11px; font-weight: 400; opacity: 0.7; margin-top: 2px; }

/* ── Features Grid ── */
.features-section { max-width: 1000px; margin: 0 auto 70px; padding: 0 24px; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.feature-card {
  padding: 28px 24px; border-radius: var(--radius-md);
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.06);
  transition: all var(--transition); position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-hero); transform: scaleX(0); transform-origin: left;
  transition: transform 0.5s ease;
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.12); box-shadow: 0 16px 48px rgba(0,0,0,0.4); }
.feature-card__icon { font-size: 36px; margin-bottom: 14px; display: block; }
.feature-card__title { font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; }
.feature-card__desc { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.feature-card__desc strong { color: var(--accent-cyan); }

/* ── How It Works ── */
.how-section { max-width: 700px; margin: 0 auto 70px; padding: 0 24px; }
.how-steps { display: flex; flex-direction: column; gap: 20px; }
.how-step {
  display: flex; gap: 20px; align-items: flex-start;
  padding: 24px; border-radius: var(--radius-md);
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.06);
  transition: all var(--transition);
}
.how-step:hover { border-color: rgba(124,77,255,0.2); transform: translateX(8px); }
.how-step__number {
  flex-shrink: 0; width: 44px; height: 44px; border-radius: 50%;
  background: var(--gradient-hero); display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 900; color: #fff;
}
.how-step__content h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.how-step__content p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.how-step__content strong { color: var(--accent-cyan); }

/* ── Comparison Table ── */
.comparison-section { max-width: 900px; margin: 0 auto 70px; padding: 0 24px; }
.table-wrapper { overflow-x: auto; border-radius: var(--radius-md); }
.comparison-table { width: 100%; border-collapse: collapse; }
.comparison-table th, .comparison-table td {
  padding: 14px 18px; text-align: left; font-size: 14px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.comparison-table th { background: var(--bg-card); font-weight: 700; }
.comparison-table td { background: rgba(255,255,255,0.02); color: var(--text-secondary); }
.comparison-table tr:hover td { background: rgba(255,255,255,0.04); }
.comparison-table .check { color: var(--accent-green); font-weight: 700; }
.comparison-table .cross { color: #ff4757; }
.comparison-table .highlight { background: rgba(124,77,255,0.08) !important; color: var(--text-primary); font-weight: 600; }

/* ── Privacy Section ── */
.privacy-section { max-width: 800px; margin: 0 auto 70px; padding: 0 24px; }
.privacy-inner {
  padding: 40px; border-radius: var(--radius-lg);
  background: var(--bg-glass); backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.06); text-align: center;
}
.privacy-list { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 20px; }
.privacy-list li {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 100px;
  background: rgba(15,155,88,0.08); border: 1px solid rgba(15,155,88,0.15);
  color: var(--accent-green); font-size: 14px; font-weight: 600;
  transition: all var(--transition);
}
.privacy-list li:hover { transform: translateY(-2px); background: rgba(15,155,88,0.12); }

/* ── Guide Steps ── */
.guide-section { max-width: 700px; margin: 0 auto 50px; padding: 0 24px; }
.guide-steps { display: flex; flex-direction: column; gap: 16px; }
.guide-step {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 20px; border-radius: var(--radius-md);
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.06);
  transition: all var(--transition);
}
.guide-step:hover { border-color: rgba(124,77,255,0.2); }
.guide-step__num {
  flex-shrink: 0; width: 36px; height: 36px; border-radius: 50%;
  background: var(--gradient-hero); display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 900; color: #fff;
}
.guide-step__text { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.guide-step__text strong { color: var(--text-primary); }
.guide-step__text a { color: var(--accent-cyan); text-decoration: none; }
.guide-step__text a:hover { text-decoration: underline; }
.guide-step__text code {
  background: var(--bg-primary); padding: 2px 8px; border-radius: 6px;
  color: var(--accent-cyan); font-size: 13px;
}

/* ── Footer ── */
.site-footer {
  text-align: center; padding: 40px 24px;
  border-top: 1px solid rgba(255,255,255,0.05);
  color: var(--text-muted); font-size: 13px;
}
.site-footer a { color: var(--accent-blue); text-decoration: none; }
.site-footer a:hover { color: var(--accent-purple); }
.footer-version { margin-bottom: 8px; font-size: 14px; color: var(--text-secondary); }
.footer-badge {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 8px; padding: 5px 14px; border-radius: 100px;
  background: rgba(15,155,88,0.08); border: 1px solid rgba(15,155,88,0.15);
  color: var(--accent-green); font-size: 12px; font-weight: 600;
}
.footer-badge__dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent-green);
  display: inline-block; animation: dotBlink 2s ease-in-out infinite;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero { padding: 60px 16px 30px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .download-buttons { flex-direction: column; align-items: center; }
  .btn-download { width: 100%; max-width: 320px; justify-content: center; }
  .comparison-table th, .comparison-table td { padding: 10px 12px; font-size: 12px; }
  .privacy-inner { padding: 24px; }
  .privacy-list { flex-direction: column; align-items: center; }
  .how-step:hover { transform: none; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 20px 12px; }
  .stat-card__number { font-size: 1.5rem; }
}