:root {
  --primary: #43A047;
  --primary-dark: #2E7D32;
  --primary-light: #A5D6A7;
  --bg: #F0F7F0;
  --bg-white: #FFFFFF;
  --text: #1a1a1a;
  --text-light: #555;
  --text-muted: #888;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 6px 24px rgba(0,0,0,0.12);
  --radius: 12px;
  --max-width: 1100px;
  --nav-height: 64px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary-dark); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary); }

img { max-width: 100%; height: auto; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ── Nav ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-height);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: box-shadow 0.3s;
}
.nav.scrolled { box-shadow: 0 2px 16px rgba(0,0,0,0.08); }
.nav .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
}
.nav-brand {
  font-size: 1.35rem; font-weight: 700; color: var(--primary-dark);
  display: flex; align-items: center; gap: 8px;
}
.nav-brand svg { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a {
  font-size: 0.95rem; font-weight: 500; color: var(--text-light);
  padding: 6px 0; position: relative;
}
.nav-links a:hover,
.nav-links a.active { color: var(--primary-dark); }
.nav-links a::after {
  content: ""; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
  background: var(--primary); transition: width 0.2s;
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--text);
  margin: 5px 0; transition: 0.3s;
}

/* ── Hero ── */
.hero {
  padding: 140px 0 80px;
  text-align: center;
}
.hero h1 {
  font-size: 2.8rem; font-weight: 800; color: var(--primary-dark);
  margin-bottom: 16px; letter-spacing: -0.5px;
}
.hero p {
  font-size: 1.15rem; color: var(--text-light);
  max-width: 600px; margin: 0 auto 40px;
}

/* ── App Cards (main page) ── */
.apps-section { padding: 40px 0 80px; }
.apps-section h2 {
  text-align: center; font-size: 1.8rem; font-weight: 700;
  margin-bottom: 40px; color: var(--text);
}
.apps-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.app-card {
  background: var(--bg-white); border-radius: var(--radius);
  padding: 32px; box-shadow: var(--shadow);
  display: flex; align-items: flex-start; gap: 20px;
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none; color: inherit;
}
.app-card:hover {
  transform: translateY(-4px); box-shadow: var(--shadow-hover); color: inherit;
}
.app-card img {
  width: 72px; height: 72px; border-radius: 16px;
  flex-shrink: 0;
}
.app-card h3 { font-size: 1.2rem; margin-bottom: 6px; }
.app-card p { font-size: 0.92rem; color: var(--text-light); margin-bottom: 12px; }
.app-card .badge {
  display: inline-block; font-size: 0.75rem; font-weight: 600;
  padding: 3px 10px; border-radius: 20px;
  background: var(--primary-light); color: var(--primary-dark);
}

/* ── App Detail Hero ── */
.app-hero {
  padding: 140px 0 60px;
  text-align: center;
}
.app-hero img {
  width: 120px; height: 120px; border-radius: 28px;
  box-shadow: 0 4px 20px rgba(67,160,71,0.25);
  margin-bottom: 24px;
}
.app-hero h1 {
  font-size: 2.4rem; font-weight: 800; color: var(--primary-dark);
  margin-bottom: 12px;
}
.app-hero .tagline {
  font-size: 1.15rem; color: var(--text-light);
  max-width: 500px; margin: 0 auto 32px;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 50px;
  font-size: 1rem; font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
  border: none; cursor: pointer;
}
.btn-primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 4px 16px rgba(67,160,71,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px); color: #fff;
  box-shadow: 0 6px 24px rgba(67,160,71,0.4);
}
.btn svg { width: 20px; height: 20px; }

/* ── Features ── */
.features { padding: 60px 0; }
.features h2 {
  text-align: center; font-size: 1.8rem; font-weight: 700;
  margin-bottom: 12px;
}
.features .subtitle {
  text-align: center; color: var(--text-light);
  margin-bottom: 48px; font-size: 1rem;
}
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-white); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow);
  text-align: center; transition: transform 0.2s;
}
.feature-card:hover { transform: translateY(-3px); }
.feature-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 16px; font-size: 1.6rem;
}
.feature-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feature-card p { font-size: 0.88rem; color: var(--text-light); }

/* ── Premium ── */
.premium {
  padding: 60px 0;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: #fff; margin: 40px 0;
  border-radius: var(--radius);
}
.premium h2 { text-align: center; font-size: 1.8rem; margin-bottom: 12px; }
.premium .subtitle { text-align: center; opacity: 0.85; margin-bottom: 48px; }
.premium-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.premium-item {
  background: rgba(255,255,255,0.12); border-radius: 10px;
  padding: 24px; backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.15);
}
.premium-item h3 { font-size: 1rem; margin-bottom: 6px; }
.premium-item p { font-size: 0.85rem; opacity: 0.8; }

/* ── Languages ── */
.languages { padding: 60px 0; text-align: center; }
.languages h2 { font-size: 1.8rem; margin-bottom: 32px; }
.lang-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.lang-tag {
  padding: 8px 18px; border-radius: 20px;
  background: var(--bg-white); box-shadow: var(--shadow);
  font-size: 0.88rem; font-weight: 500; color: var(--text);
}

/* ── CTA ── */
.cta {
  padding: 80px 0; text-align: center;
}
.cta h2 { font-size: 1.8rem; margin-bottom: 16px; }
.cta p { color: var(--text-light); margin-bottom: 32px; }
.cta-links { margin-top: 20px; }
.cta-links a { font-size: 0.9rem; color: var(--text-muted); margin: 0 12px; }
.cta-links a:hover { color: var(--primary); }

/* ── Footer ── */
.footer {
  padding: 32px 0; border-top: 1px solid rgba(0,0,0,0.06);
  text-align: center; font-size: 0.85rem; color: var(--text-muted);
}
.footer a { color: var(--text-muted); }
.footer a:hover { color: var(--primary); }
.footer-links { margin-bottom: 8px; }
.footer-links a { margin: 0 12px; }

/* ── Privacy page ── */
.page-content {
  padding: 120px 0 80px;
  max-width: 780px; margin: 0 auto;
}
.page-content h1 {
  font-size: 2rem; font-weight: 700; margin-bottom: 8px;
  color: var(--primary-dark);
}
.page-content .last-updated {
  color: var(--text-muted); font-size: 0.9rem; margin-bottom: 40px;
}
.page-content h2 {
  font-size: 1.3rem; font-weight: 600; margin: 32px 0 12px;
  color: var(--text);
}
.page-content p,
.page-content ul {
  color: var(--text-light); margin-bottom: 16px;
}
.page-content ul { padding-left: 24px; }
.page-content li { margin-bottom: 6px; }

/* ── Animations ── */
.fade-in {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .app-hero h1 { font-size: 1.8rem; }
  .features-grid { grid-template-columns: 1fr; }
  .premium-grid { grid-template-columns: 1fr 1fr; }

  .nav-links {
    display: none; position: absolute; top: var(--nav-height);
    left: 0; right: 0; background: #fff;
    flex-direction: column; padding: 16px 24px; gap: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .hero { padding: 120px 0 60px; }
  .apps-grid { grid-template-columns: 1fr; }
  .premium-grid { grid-template-columns: 1fr; }
  .app-card { padding: 24px; }
}