/*
 * front-page.css
 *
 * トップページ専用の見た目を整えます。
 */

.front-page {
  background: var(--kuma-bg);
}

/* Hero */

.front-hero {
  background: linear-gradient(
    135deg,
    var(--kuma-soft-bg),
    #ffffff
  );
  border-bottom: 1px solid var(--kuma-border);
}

.front-hero__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 4rem 1rem;
}

.front-hero__eyebrow {
  margin: 0 0 0.75rem;
  color: var(--kuma-accent);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.front-hero__title {
  margin: 0 0 1rem;
  color: #345243;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.35;
}

.front-hero__lead {
  max-width: 42rem;
  margin: 0;
  color: var(--kuma-muted);
  font-size: 1.125rem;
  line-height: 1.9;
}

/* Common section */

.front-section {
  padding: 3rem 1rem;
}

.front-section__inner {
  max-width: 1120px;
  margin: 0 auto;
}

.front-section h2 {
  margin: 0 0 1.5rem;
  padding-left: 0.75rem;
  border-left: 6px solid var(--kuma-accent);
  color: var(--kuma-text);
  font-size: 1.6rem;
}

/* World cards */

.front-world-grid,
.front-pickup-grid,
.front-latest-grid {
  display: grid;
  gap: 1rem;
}

.front-world-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.front-world-card {
  display: block;
  min-height: 8rem;
  padding: 1.25rem;
  border: 1px solid var(--kuma-border);
  border-top: 6px solid var(--kuma-accent);
  border-radius: 16px;
  background: #ffffff;
  color: var(--kuma-text);
  text-decoration: none;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.front-world-card:hover,
.front-world-card:focus {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.front-world-card__label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--kuma-accent);
  font-size: 1.25rem;
  font-weight: 700;
}

.front-world-card__text {
  display: block;
  color: var(--kuma-muted);
  line-height: 1.8;
}

/* 色空間カード */

.front-world-card.kuma-world-education {
  --kuma-soft-bg: #eef7ed;
  --kuma-accent: #6fa86f;
  background: #f8fcf7;
}

.front-world-card.kuma-world-ai {
  --kuma-soft-bg: #eaf3fa;
  --kuma-accent: #5b8db8;
  background: #f7fbfe;
}

.front-world-card.kuma-world-language {
  --kuma-soft-bg: #f1eaf7;
  --kuma-accent: #8a6fb0;
  background: #fbf8fe;
}

.front-world-card.kuma-world-society {
  --kuma-soft-bg: #f2eadf;
  --kuma-accent: #a07855;
  background: #fdfaf6;
}

.front-world-card.kuma-world-thought {
  --kuma-soft-bg: #ece9e3;
  --kuma-accent: #777066;
  background: #faf9f6;
}

.front-world-card.kuma-world-record {
  --kuma-soft-bg: #eeeeee;
  --kuma-accent: #666666;
  background: #fafafa;
}

/* Pickup */

.front-pickup {
  background: var(--kuma-soft-bg);
  border-top: 1px solid var(--kuma-border);
  border-bottom: 1px solid var(--kuma-border);
}

.front-pickup-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.front-pickup-card,
.front-latest-card {
  display: block;
  padding: 1.25rem;
  border: 1px solid var(--kuma-border);
  border-radius: 16px;
  background: #ffffff;
  color: var(--kuma-text);
  text-decoration: none;
}

.front-pickup-card h3 {
  margin: 0 0 0.75rem;
  color: var(--kuma-accent);
  font-size: 1.2rem;
}

.front-pickup-card p {
  margin: 0;
  color: var(--kuma-muted);
  line-height: 1.8;
}

/* Latest */

.front-latest-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.front-latest-card__title {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.front-latest-card__title a {
  color: var(--kuma-text);
  text-decoration: none;
}

.front-latest-card__title a:hover,
.front-latest-card__title a:focus {
  text-decoration: underline;
}

.front-latest-card__meta {
  margin: 0 0 0.75rem;
  color: var(--kuma-muted);
  font-size: 0.875rem;
}

.front-latest-card__excerpt {
  margin: 0;
  color: var(--kuma-muted);
  line-height: 1.8;
}

/* Responsive */

@media (max-width: 900px) {
  .front-world-grid,
  .front-pickup-grid,
  .front-latest-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .front-hero__inner {
    padding: 3rem 1rem;
  }

  .front-world-grid,
  .front-pickup-grid,
  .front-latest-grid {
    grid-template-columns: 1fr;
  }

  .front-section {
    padding: 2.25rem 1rem;
  }
}