/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #0d1117;
  --color-surface: #161b22;
  --color-surface-hover: #1c2129;
  --color-border: #30363d;
  --color-text: #e6edf3;
  --color-text-muted: #8b949e;
  --color-accent: #198DA0;
  --color-accent-light: #CDEAF5;
  --color-inky-body: #EAF7FE;
  --color-inky-dark: #5C5B5D;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  --font-mono: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
  --max-width: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
}

html { font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Homepage ── */
.home {
  min-height: 100vh;
  padding: 15vh 2rem 2rem;
}

.home-inner {
  text-align: center;
  max-width: 1000px;
  margin: 0 auto;
}

.home-title {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.home-tagline {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-text-muted);
  margin-bottom: 3rem;
}

.home-cards {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.home-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 280px;
  height: 320px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all 0.2s ease;
  text-decoration: none;
  color: var(--color-text);
  position: relative;
  overflow: hidden;
}

.home-card-mascot {
  width: 160px;
  height: 160px;
  object-fit: contain;
}

.home-card-name {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: auto;
  margin-bottom: 0.25rem;
}

.home-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.home-card:hover {
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(25, 141, 160, 0.15);
  text-decoration: none;
}

.home-card--disabled {
  cursor: default;
  opacity: 0.6;
}

.home-card--disabled:hover {
  border-color: var(--color-border);
  background: var(--color-surface);
  transform: none;
  box-shadow: none;
}


.home-card-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background: var(--color-border);
  color: var(--color-text-muted);
  font-weight: 600;
}

/* ── Staggered Card Entry (4) ── */
@keyframes card-enter {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.home-card {
  opacity: 0;
  animation: card-enter 0.6s ease-out forwards;
}

.home-card:nth-child(1) { animation-delay: 0.1s; }
.home-card:nth-child(2) { animation-delay: 0.3s; }
.home-card:nth-child(3) { animation-delay: 0.5s; }

/* ── About Section (6) ── */
.home-about {
  max-width: 800px;
  margin: 6rem auto 0;
  text-align: center;
  padding: 0 2rem;
}

.home-about-heading {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.home-about-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
}

.home-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  text-align: left;
}

.home-feature {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
}

.home-feature-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.home-feature-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

@media (max-width: 640px) {
  .home-features {
    grid-template-columns: 1fr;
  }
}

/* ── Dot Grid Background ── */
.bg-option-dots .home {
  background-image: radial-gradient(circle, var(--color-border) 1px, transparent 1px);
  background-size: 32px 32px;
}