/* Reset & base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: #0b0b0d;
  color: #f5f5f7;
  line-height: 1.6;
}

:root {
  --accent: #e2f64c;
  --accent-dark: #c8dc3d;
  --bg: #0b0b0d;
  --surface: #16161a;
  --card: #1e1e23;
  --border: #2a2a30;
  --muted: #9ca3af;
  --text: #f5f5f7;
  --max-width: 1040px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Language switcher & nav */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 11, 13, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.logo { font-weight: 800; font-size: 1.3rem; color: var(--text); display: flex; align-items: center; gap: 0.5rem; }
.logo img { width: 28px; height: 28px; border-radius: 6px; }

.nav-links { display: flex; gap: 1.25rem; font-size: 0.95rem; }

.lang-switcher { display: flex; gap: 0.35rem; }
.lang-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.35rem 0.55rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all .15s ease;
}
.lang-btn:hover, .lang-btn.active {
  background: var(--accent);
  color: #0b0b0d;
  border-color: var(--accent);
}

/* I18n visibility */
.i18n { display: none; }
body[data-lang="es"] .i18n.es,
body[data-lang="en"] .i18n.en,
body[data-lang="pt"] .i18n.pt,
body[data-lang="fr"] .i18n.fr,
body[data-lang="it"] .i18n.it,
body[data-lang="de"] .i18n.de { display: block; }

/* Hero */
.hero {
  text-align: center;
  padding: 5rem 1.5rem 6rem;
  background: radial-gradient(ellipse at top, #202024 0%, #0b0b0d 60%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 20%, rgba(226,246,76,0.08), transparent 50%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 720px; margin: 0 auto; }
.hero img { width: 120px; height: 120px; border-radius: 26px; box-shadow: 0 20px 60px rgba(0,0,0,0.4); margin-bottom: 1.5rem; }
.hero h1 { font-size: 3rem; margin: 0 0 0.75rem; letter-spacing: -0.03em; }
.hero h1 span { color: var(--accent); }
.hero p.lead { font-size: 1.25rem; color: var(--muted); max-width: 560px; margin: 0 auto 2rem; }
.badge {
  display: inline-block;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-size: 0.95rem;
}

/* Sections */
section { padding: 4.5rem 1.5rem; }
.section-inner { max-width: var(--max-width); margin: 0 auto; }
.section-title { font-size: 2rem; text-align: center; margin: 0 0 2.5rem; }

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.5rem;
  transition: transform .15s ease, border-color .15s ease;
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.feature-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.feature-card h3 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.feature-card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* CTA */
.cta {
  text-align: center;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #0b0b0d;
  font-weight: 700;
  padding: 0.9rem 1.6rem;
  border-radius: 12px;
  font-size: 1rem;
  margin-top: 1rem;
}
.btn:hover { background: var(--accent-dark); text-decoration: none; }

/* Page content */
.page-header {
  padding: 4rem 1.5rem 2rem;
  text-align: center;
  background: radial-gradient(ellipse at top, #202024 0%, #0b0b0d 60%);
}
.page-header h1 { font-size: 2.25rem; margin: 0 0 0.5rem; }
.page-header p { color: var(--muted); margin: 0; }

.content {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}
.content h2 { font-size: 1.5rem; margin-top: 2.5rem; }
.content h3 { font-size: 1.2rem; margin-top: 2rem; color: var(--accent); }
.content p, .content li { color: #d1d5db; }
.content ul { padding-left: 1.5rem; }
.content li { margin: 0.4rem 0; }
.content code { background: var(--card); padding: 0.15rem 0.35rem; border-radius: 4px; font-size: 0.9em; }
.content a { color: var(--accent); }

.lang-notice {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Footer */
footer {
  text-align: center;
  padding: 2.5rem 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 600px) {
  .hero h1 { font-size: 2.2rem; }
  .hero { padding: 3.5rem 1rem 4.5rem; }
  .topbar-inner { padding: 0.75rem 1rem; }
  .nav-links { display: none; }
}