/* 統合開発者ドキュメントポータル（/） */

:root {
  --header-height: 60px;
  --header-bg: #ffffff;
  --header-text: #334155;
  --header-border: #e2e8f0;
  --main-bg: #fff;
  --text: #334155;
  --text-muted: #64748b;
  --link: #2563eb;
  --link-hover: #1d4ed8;
  --block-border: #e2e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background: var(--main-bg);
}

body.page-catalog {
  height: auto;
  min-height: 100vh;
  overflow: auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--header-bg);
  color: var(--header-text);
  border-bottom: 1px solid var(--header-border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: 100%;
  padding: 0.2rem 1.5rem;
  height: 100%;
}

.logo-link {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  text-decoration: none;
  color: inherit;
}

.logo-img {
  width: auto;
  display: block;
}

.header-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  border-left: 1px solid var(--header-border);
  padding-left: 1rem;
  white-space: nowrap;
}

.service-site-links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.page-catalog .catalog-header-links {
  margin-left: auto;
}

.service-site-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--header-border);
  border-radius: 5px;
  transition: color 0.15s, border-color 0.15s;
}

.service-site-link:hover {
  color: var(--link);
  border-color: var(--link);
}

.service-link-sep {
  color: var(--header-border);
  font-size: 0.75rem;
  user-select: none;
}

.page-catalog-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
  --catalog-columns: 3;
  --catalog-gap: 1rem;
}

.catalog-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  line-height: 1.3;
  color: var(--text);
}

.catalog-lead {
  font-size: 1rem;
  color: var(--text-muted);
  margin: 0 0 0.5rem;
  max-width: 720px;
  line-height: 1.7;
  line-break: strict;
  word-break: keep-all;
}

.catalog-section {
  margin-top: 2.5rem;
}

.catalog-section-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 1rem;
  color: var(--text);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(var(--catalog-columns), minmax(0, 1fr));
  gap: var(--catalog-gap);
  align-items: stretch;
}

.catalog-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--block-border);
  border-radius: 8px;
  padding: 1.25rem 1.35rem;
  background: var(--main-bg);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.catalog-card:hover {
  border-color: var(--link);
  box-shadow: 0 2px 10px rgba(37, 99, 235, 0.1);
}

.catalog-card-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.catalog-card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
  flex: 1;
}

.page-catalog .copyright {
  padding-top: 3rem;
  max-width: none;
  color: var(--text-muted);
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .page-catalog-main {
    padding: 1.5rem 1rem 2rem;
    --catalog-columns: 1;
  }

  .catalog-hero h1 {
    font-size: 1.5rem;
  }

  .page-catalog .catalog-header-links {
    display: none;
  }
}

@media (min-width: 769px) and (max-width: 960px) {
  .page-catalog-main {
    --catalog-columns: 2;
  }
}