:root {
  scroll-behavior: smooth;
}

body {
  color: var(--text);
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 50%, var(--bg) 100%);
  min-height: 100vh;
}

[data-theme="light"] body {
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface-soft) 50%, var(--bg) 100%);
}

.container {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-soft) 100%);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  font-family: var(--heading-family);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.site-nav a {
  color: var(--muted);
  transition: color var(--transition);
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--primary);
}

.menu-toggle {
  display: none;
  font-size: 1.25rem;
  color: var(--text);
  cursor: pointer;
}

.lang-switch {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  font-family: var(--code-family);
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  font-size: 1.1rem;
}

.theme-toggle-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.18), transparent 55%);
  pointer-events: none;
}

[data-theme="light"] .theme-toggle-btn::before {
  background: radial-gradient(circle at center, rgba(0, 0, 0, 0.15), transparent 55%);
}

.theme-toggle-btn:hover,
.lang-btn:hover,
.theme-toggle-btn:focus,
.lang-btn:focus {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.12);
}

.hero {
  padding: 4rem 0 3rem;
}

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent-light);
  font-size: 0.85rem;
  margin-bottom: 1rem;
  font-family: var(--code-family);
}

[data-theme="light"] .hero .eyebrow {
  color: #8b5e3c;
}

.hero h1 {
  font-family: var(--heading-family);
  font-size: clamp(2.25rem, 4vw, 4rem);
  margin: 0 0 1rem;
  line-height: 1.05;
}

.hero-text {
  max-width: 42rem;
  margin-bottom: 2rem;
  color: var(--muted);
  font-family: var(--font-family);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.75rem;
  border-radius: 999px;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  font-size: 1.1rem;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, rgba(0, 179, 255, 0.92), rgba(50, 116, 232, 0.92));
  color: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 0 0 1px rgba(255, 210, 130, 0.3), 0 10px 24px rgba(0, 132, 255, 0.2);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.22);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.35) 0%, rgba(255, 180, 90, 0.55) 22%, rgba(255, 148, 46, 0.38) 38%, rgba(255, 255, 255, 0.12) 48%, transparent 58%);
  transform: translateX(-100%);
  opacity: 0;
  transition: transform 0.35s ease, opacity 0.35s ease;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: 999px;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 215, 140, 0.14), rgba(255, 255, 255, 0.04));
}

.btn-primary:hover,
.btn-primary:focus {
  transform: translateY(-1px);
  background: linear-gradient(135deg, rgba(0, 179, 255, 0.88), rgba(50, 116, 232, 0.88));
  box-shadow: inset 0 0 0 1px rgba(255, 185, 75, 0.4), 0 16px 36px rgba(0, 132, 255, 0.22);
}

.btn-primary:hover::before,
.btn-primary:focus::before {
  opacity: 1;
  transform: translateX(100%);
}

.overview {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 4rem;
}

.overview-card {
  position: relative;
  display: block;
  background: linear-gradient(180deg, var(--surface), var(--surface-soft));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  overflow: hidden;
  color: inherit;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.overview-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.03) 25%, transparent 50%);
  opacity: 0;
  transform: translate(-40%, -40%) rotate(-15deg);
  transition: opacity var(--transition), transform var(--transition);
  pointer-events: none;
}

.overview-card:hover,
.overview-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.16);
  border-color: rgba(255, 255, 255, 0.16);
}

.overview-card:hover::before,
.overview-card:focus-visible::before {
  opacity: 1;
  transform: translate(0%, 0%) rotate(-15deg);
}

.overview-card h2,
.overview-card p {
  position: relative;
  z-index: 1;
}

.page-content {
  padding: 3rem 0;
}

.page-content h1,
.page-content h2 {
  color: var(--text);
  font-family: var(--heading-family);
}

.page-content p,
.page-content li {
  color: var(--muted);
  font-family: var(--font-family);
}

.cards-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.contact-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

@media (max-width: 860px) {
  .header-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav {
    flex-direction: column;
    gap: 0.75rem;
    display: none;
  }

  .site-nav.open {
    display: flex;
  }

  .menu-toggle {
    display: inline-flex;
  }
}