/* Sudoku Quest — landing & privacy (EAC Dev Studios) */
:root {
  --ink: #101827;
  --panel: #17243b;
  --turquoise: #58d7d0;
  --gold: #f6c65b;
  --paper: #f4f7fb;
  --muted: #8b9cb8;
  --glass: rgba(23, 36, 59, 0.72);
  --radius: 16px;
  --shadow: 0 24px 64px rgba(16, 24, 39, 0.35);
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--paper);
  background: var(--ink);
  line-height: 1.6;
  min-height: 100vh;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(88, 215, 208, 0.18), transparent 55%),
    radial-gradient(ellipse 70% 50% at 85% 80%, rgba(246, 198, 91, 0.12), transparent 50%),
    linear-gradient(165deg, #0c1220 0%, var(--ink) 45%, #0f1a2e 100%);
}

.container {
  width: min(960px, 92vw);
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
.site-header {
  padding: 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.brand span {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  margin-left: 1.25rem;
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--turquoise);
}

/* Hero */
.hero {
  padding: 3rem 0 4rem;
  text-align: center;
}

.hero-card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(88, 215, 208, 0.15);
  border-radius: 24px;
  padding: 2.5rem 1.5rem 2rem;
  box-shadow: var(--shadow);
}

.hero-icon {
  width: 120px;
  height: 120px;
  border-radius: 28px;
  margin: 0 auto 1.5rem;
  display: block;
  box-shadow: 0 12px 40px rgba(88, 215, 208, 0.25);
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--paper) 0%, var(--turquoise) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 32rem;
  margin: 0 auto 1.75rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--turquoise) 0%, #3ec4bc 100%);
  color: var(--ink);
  box-shadow: 0 8px 24px rgba(88, 215, 208, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(88, 215, 208, 0.45);
}

.btn-primary.disabled {
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-secondary {
  background: transparent;
  color: var(--turquoise);
  border: 1px solid rgba(88, 215, 208, 0.4);
}

.btn-secondary:hover {
  background: rgba(88, 215, 208, 0.08);
}

.badge-soon {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--gold);
  background: rgba(246, 198, 91, 0.12);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
}

/* Features */
.features {
  padding: 2rem 0 4rem;
}

.features h2 {
  text-align: center;
  font-size: 1.35rem;
  margin-bottom: 1.5rem;
  color: var(--paper);
}

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

.feature {
  background: var(--glass);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.feature h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  color: var(--turquoise);
}

.feature p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Privacy page */
.privacy-page {
  padding: 2rem 0 4rem;
}

.privacy-card {
  background: var(--glass);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow);
}

.privacy-card h1 {
  margin-top: 0;
  font-size: 1.75rem;
  color: var(--turquoise);
}

.privacy-card h2 {
  font-size: 1.15rem;
  margin-top: 2rem;
  color: var(--gold);
}

.privacy-card p,
.privacy-card li {
  color: #c8d4e8;
  font-size: 0.95rem;
}

.privacy-card ul {
  padding-left: 1.25rem;
}

.privacy-card a {
  color: var(--turquoise);
}

.meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.lang-toggle {
  margin-bottom: 1.5rem;
}

.lang-toggle button {
  background: transparent;
  border: 1px solid rgba(88, 215, 208, 0.35);
  color: var(--turquoise);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  margin-right: 0.5rem;
  font-size: 0.85rem;
}

.lang-toggle button.active {
  background: rgba(88, 215, 208, 0.15);
}

[lang-section].hidden {
  display: none;
}

/* Footer */
.site-footer {
  padding: 2rem 0 2.5rem;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 0.85rem;
}

.site-footer a {
  color: var(--turquoise);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

@media (max-width: 520px) {
  .nav a {
    margin-left: 0.75rem;
    font-size: 0.85rem;
  }

  .hero-card {
    padding: 2rem 1rem 1.5rem;
  }
}