/* ===== 萩高STUDIES Portal v1 ===== */
:root {
  --c-blue: #a51f42;
  --c-blue-50: #fff1f4;
  --c-blue-100: #fbd7e0;
  --c-green: #16a34a;
  --c-green-50: #ecfdf5;
  --c-green-100: #d1fae5;
  --c-orange: #f59e0b;
  --c-orange-50: #fff7ed;
  --c-orange-100: #fef3c7;
  --c-purple: #7c3aed;
  --c-purple-50: #f5f3ff;
  --c-purple-100: #ede9fe;
  --c-cyan: #0891b2;
  --c-cyan-50: #ecfeff;
  --c-cyan-100: #cffafe;
  --c-text: #1f2937;
  --c-text-soft: #4b5563;
  --c-text-muted: #6b7280;
  --c-border: #e5e7eb;
  --c-border-soft: #f3f4f6;
  --c-bg: #ffffff;
  --c-bg-soft: #f8fafc;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, .06);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, .08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --maxw: 1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; padding: 0; margin: 0; }
button { font-family: inherit; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--c-blue); color: #fff; padding: 8px 14px; border-radius: 0 0 8px 0; z-index: 100;
}
.skip-link:focus { left: 0; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--c-border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding-top: 14px; padding-bottom: 14px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark { display: inline-flex; }
.brand-mark img { display: block; }
.brand-text { display: inline-flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 17px; font-weight: 800; letter-spacing: .02em; }
.brand-sub { font-size: 11px; color: var(--c-text-muted); }
.brand.small .brand-name { font-size: 15px; }

.primary-nav ul {
  display: flex; gap: 4px; align-items: center;
}
.primary-nav a {
  display: inline-block; padding: 8px 12px; font-size: 14px; font-weight: 500;
  color: var(--c-text-soft); border-radius: 8px;
}
.primary-nav a:hover { background: var(--c-bg-soft); color: var(--c-blue); }
.nav-search-link span { display: inline; }

.nav-toggle {
  display: none; background: transparent; border: 1px solid var(--c-border);
  width: 40px; height: 40px; border-radius: 10px; cursor: pointer;
  align-items: center; justify-content: center; flex-direction: column; gap: 4px;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--c-text); border-radius: 2px; }

.mobile-nav { border-top: 1px solid var(--c-border); background: #fff; }
.mobile-nav ul { display: flex; flex-direction: column; }
.mobile-nav a { display: block; padding: 12px 20px; border-bottom: 1px solid var(--c-border-soft); font-size: 14px; }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(180deg, #fff1f4 0%, #f8fafc 100%);
  padding: 56px 0 64px;
}
.hero-inner {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center;
}
.hero-title {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.35; margin: 0 0 18px; font-weight: 800; letter-spacing: .01em;
}
.hero-title .accent { color: var(--c-blue); }
.hero-lead { font-size: 15px; color: var(--c-text-soft); margin: 0 0 26px; }

.hero-search {
  display: flex; align-items: center; gap: 0;
  background: #fff; border: 1px solid var(--c-border); border-radius: 999px;
  padding: 6px 6px 6px 18px; max-width: 520px;
  box-shadow: var(--shadow-md);
}
.header-search {
  width: min(520px, 52vw);
  max-width: 520px;
  margin-left: auto;
  box-shadow: none;
}
.hero-search-icon { color: var(--c-text-muted); margin-right: 8px; }
.search-target {
  flex: 0 0 auto; border: 0; border-right: 1px solid var(--c-border); outline: none;
  background: transparent; color: var(--c-text-soft); font-size: 13px; font-weight: 700;
  padding: 8px 10px 8px 0; margin-right: 8px; cursor: pointer;
}
.hero-search input {
  flex: 1; min-width: 0; border: 0; outline: none; background: transparent;
  font-size: 14px; padding: 10px 4px;
}
.btn-primary {
  background: var(--c-blue); color: #fff; border: 0;
  padding: 10px 20px; border-radius: 999px;
  font-size: 14px; font-weight: 700; cursor: pointer; white-space: nowrap;
  transition: background .15s ease;
}
.btn-primary:hover { background: #861a36; }

.hero-art svg { width: 100%; height: auto; }

/* ===== Section common ===== */
.section-title { font-size: 22px; font-weight: 800; margin: 0; letter-spacing: .02em; }
.section-title.center { text-align: center; }
.section-lead { font-size: 13px; color: var(--c-text-muted); margin: 4px 0 0; }
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 12px;
  margin-bottom: 18px;
}
.link-more { font-size: 13px; color: var(--c-blue); font-weight: 600; }
.link-more:hover { text-decoration: underline; }

/* ===== Buckets ===== */
.buckets { padding: 56px 0 32px; }
.buckets .section-title { margin-bottom: 28px; }
.bucket-grid {
  display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px;
}
.bucket-card {
  display: block; padding: 28px 22px; border-radius: var(--radius-lg);
  border: 1px solid var(--c-border); background: #fff;
  text-align: left; transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.bucket-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.bucket-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 16px; font-size: 28px; margin-bottom: 14px;
}
.bucket-card h3 { font-size: 17px; margin: 0 0 10px; font-weight: 800; }
.bucket-card p { font-size: 13px; color: var(--c-text-soft); margin: 0 0 16px; line-height: 1.6; }
.bucket-cta {
  display: inline-block; font-size: 13px; font-weight: 700; padding: 8px 16px;
  border-radius: 999px; color: #fff;
}

.bucket-stats { background: var(--c-blue-50); border-color: #f3b7c6; }
.bucket-stats .bucket-icon { background: #fff; color: var(--c-blue); border: 1px solid #f3b7c6; }
.bucket-stats h3 { color: var(--c-blue); }
.bucket-stats .bucket-cta { background: var(--c-blue); }

.bucket-learn { background: var(--c-green-50); border-color: #bbf7d0; }
.bucket-learn .bucket-icon { background: #fff; color: var(--c-green); border: 1px solid #bbf7d0; }
.bucket-learn h3 { color: var(--c-green); }
.bucket-learn .bucket-cta { background: var(--c-green); }

.bucket-game { background: var(--c-orange-50); border-color: #fde68a; }
.bucket-game .bucket-icon { background: #fff; color: var(--c-orange); border: 1px solid #fde68a; }
.bucket-game h3 { color: #d97706; }
.bucket-game .bucket-cta { background: var(--c-orange); }

.bucket-utility { background: var(--c-purple-50); border-color: #ddd6fe; }
.bucket-utility .bucket-icon { background: #fff; color: var(--c-purple); border: 1px solid #ddd6fe; }
.bucket-utility h3 { color: var(--c-purple); }
.bucket-utility .bucket-cta { background: var(--c-purple); }

.bucket-creative { background: var(--c-purple-50); border-color: #ddd6fe; }
.bucket-creative .bucket-icon { background: #fff; color: var(--c-purple); border: 1px solid #ddd6fe; }
.bucket-creative h3 { color: var(--c-purple); }
.bucket-creative .bucket-cta { background: var(--c-purple); }

.bucket-lifestyle { background: var(--c-cyan-50); border-color: #a5f3fc; }
.bucket-lifestyle .bucket-icon { background: #fff; color: var(--c-cyan); border: 1px solid #a5f3fc; }
.bucket-lifestyle h3 { color: var(--c-cyan); }
.bucket-lifestyle .bucket-cta { background: var(--c-cyan); }

/* ===== Recommended ===== */
.recommend { padding: 32px 0 24px; }
.recommend-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  align-items: stretch;
}
.recommend-card {
  position: relative;
  display: flex; flex-direction: column; padding: 18px;
  border: 1px solid var(--c-border); border-radius: var(--radius-md); background: #fff;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  height: 100%;
  border-top: 4px solid var(--c-border);
}
.recommend-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: #cbd5e1; }
.recommend-cat {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 700; letter-spacing: .04em;
  padding: 3px 10px; border-radius: 999px; align-self: flex-start;
  margin-bottom: 10px;
  background: var(--c-bg-soft); color: var(--c-text-soft);
}
.recommend-thumb {
  height: 120px; border-radius: 10px; margin-bottom: 14px;
  display: flex; align-items: center; justify-content: center; font-size: 38px;
  background: linear-gradient(135deg, #fff1f4, #ede9fe);
  overflow: hidden;
}
.recommend-thumb.has-img { padding: 0; background: #f1f5f9; }
.recommend-thumb.has-img img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.recommend-card h3 { font-size: 15px; margin: 0 0 6px; font-weight: 800; }
.recommend-card p { font-size: 12px; color: var(--c-text-soft); margin: 0 0 12px; line-height: 1.55; }
.recommend-card .tag-row { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 10px; }
.recommend-card .cta { font-size: 12px; color: var(--c-blue); font-weight: 700; margin-top: auto; }

/* category accents */
.recommend-card.b-stats   { border-top-color: var(--c-blue); }
.recommend-card.b-stats   .recommend-cat { background: var(--c-blue-100); color: var(--c-blue); }
.recommend-card.b-stats   .recommend-thumb { background: linear-gradient(135deg, #fbd7e0, #fff1f4); }
.recommend-card.b-stats   .cta { color: var(--c-blue); }

.recommend-card.b-learn   { border-top-color: var(--c-green); }
.recommend-card.b-learn   .recommend-cat { background: var(--c-green-100); color: #047857; }
.recommend-card.b-learn   .recommend-thumb { background: linear-gradient(135deg, #d1fae5, #ecfdf5); }
.recommend-card.b-learn   .cta { color: var(--c-green); }

.recommend-card.b-game    { border-top-color: var(--c-orange); }
.recommend-card.b-game    .recommend-cat { background: var(--c-orange-100); color: #b45309; }
.recommend-card.b-game    .recommend-thumb { background: linear-gradient(135deg, #fef3c7, #fff7ed); }
.recommend-card.b-game    .cta { color: #d97706; }

.recommend-card.b-utility { border-top-color: var(--c-purple); }
.recommend-card.b-utility .recommend-cat { background: var(--c-purple-100); color: var(--c-purple); }
.recommend-card.b-utility .recommend-thumb { background: linear-gradient(135deg, #ede9fe, #f5f3ff); }
.recommend-card.b-utility .cta { color: var(--c-purple); }

.recommend-card.b-creative { border-top-color: var(--c-purple); }
.recommend-card.b-creative .recommend-cat { background: var(--c-purple-100); color: var(--c-purple); }
.recommend-card.b-creative .recommend-thumb { background: linear-gradient(135deg, #ede9fe, #f5f3ff); }
.recommend-card.b-creative .cta { color: var(--c-purple); }

.recommend-card.b-lifestyle { border-top-color: var(--c-cyan); }
.recommend-card.b-lifestyle .recommend-cat { background: var(--c-cyan-100); color: var(--c-cyan); }
.recommend-card.b-lifestyle .recommend-thumb { background: linear-gradient(135deg, #cffafe, #ecfeff); }
.recommend-card.b-lifestyle .cta { color: var(--c-cyan); }
.recommend-empty { grid-column: 1 / -1; }

/* ===== Catalog ===== */
.catalog { padding: 32px 0 48px; background: var(--c-bg-soft); }
.catalog .section-title { margin-bottom: 18px; }
.chip-row {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px;
}
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border: 1px solid var(--c-border); border-radius: 999px;
  background: #fff; font-size: 13px; font-weight: 600; color: var(--c-text-soft);
  cursor: pointer; transition: all .15s ease;
}
.chip:hover { border-color: #cbd5e1; }
.chip.active { background: var(--c-blue); color: #fff; border-color: var(--c-blue); }
.chip .chip-icon { font-size: 14px; }

.search-summary {
  margin-bottom: 16px; padding: 10px 14px; background: #fff;
  border: 1px solid var(--c-border); border-radius: 10px; font-size: 13px; color: var(--c-text-soft);
}
.search-summary strong { color: var(--c-blue); }

.bucket-block { margin-bottom: 36px; scroll-margin-top: 80px; }
.bucket-block.hidden { display: none; }
.bucket-block-title {
  font-size: 16px; font-weight: 800; margin: 0 0 14px;
  display: flex; align-items: center; gap: 10px;
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-stats { background: var(--c-blue); }
.dot-learn { background: var(--c-green); }
.dot-game { background: var(--c-orange); }
.dot-utility { background: var(--c-purple); }
.dot-creative { background: var(--c-purple); }
.dot-lifestyle { background: var(--c-cyan); }

.tool-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
.tool-card {
  display: flex; flex-direction: column; padding: 0; gap: 0; overflow: hidden;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-md);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  border-top: 3px solid var(--c-border);
}
.tool-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: #cbd5e1; }
.tool-thumb {
  height: 130px;
  display: flex; align-items: center; justify-content: center; font-size: 40px;
  background: linear-gradient(135deg, #fff1f4, #ede9fe);
  overflow: hidden;
  border-bottom: 1px solid var(--c-border);
}
.tool-thumb.has-img { background: #f1f5f9; }
.tool-thumb.has-img img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.tool-card .tool-body {
  display: flex; flex-direction: column; gap: 6px;
  padding: 12px 14px 14px; flex: 1;
}
.tool-card h4 { font-size: 14px; margin: 0; font-weight: 700; line-height: 1.4; }
.tool-card .tool-url { font-size: 11px; color: var(--c-text-muted); word-break: break-all; }
.tool-card .tool-desc {
  font-size: 12px; color: var(--c-text-soft); margin: 0; line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.tool-card .tag-row { display: flex; flex-wrap: wrap; gap: 4px; margin-top: auto; padding-top: 4px; }

/* tool-card のバケット別アクセント */
.tool-card.b-stats   { border-top-color: var(--c-blue); }
.tool-card.b-stats   .tool-thumb:not(.has-img) { background: linear-gradient(135deg, #fbd7e0, #fff1f4); }
.tool-card.b-learn   { border-top-color: var(--c-green); }
.tool-card.b-learn   .tool-thumb:not(.has-img) { background: linear-gradient(135deg, #d1fae5, #ecfdf5); }
.tool-card.b-game    { border-top-color: var(--c-orange); }
.tool-card.b-game    .tool-thumb:not(.has-img) { background: linear-gradient(135deg, #fef3c7, #fff7ed); }
.tool-card.b-utility { border-top-color: var(--c-purple); }
.tool-card.b-utility .tool-thumb:not(.has-img) { background: linear-gradient(135deg, #ede9fe, #f5f3ff); }
.tool-card.b-creative { border-top-color: var(--c-purple); }
.tool-card.b-creative .tool-thumb:not(.has-img) { background: linear-gradient(135deg, #ede9fe, #f5f3ff); }
.tool-card.b-lifestyle { border-top-color: var(--c-cyan); }
.tool-card.b-lifestyle .tool-thumb:not(.has-img) { background: linear-gradient(135deg, #cffafe, #ecfeff); }

.tag {
  display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 999px;
  background: var(--c-bg-soft); color: var(--c-text-soft); font-weight: 500;
}
.tag.b-stats { background: var(--c-blue-100); color: var(--c-blue); }
.tag.b-learn { background: var(--c-green-100); color: #047857; }
.tag.b-game { background: var(--c-orange-100); color: #b45309; }
.tag.b-utility { background: var(--c-purple-100); color: var(--c-purple); }
.tag.b-creative { background: var(--c-purple-100); color: var(--c-purple); }
.tag.b-lifestyle { background: var(--c-cyan-100); color: var(--c-cyan); }

.empty-msg {
  text-align: center; color: var(--c-text-muted); font-size: 14px;
  padding: 40px 0;
}

/* ===== Bottom row ===== */
.bottom-row { padding: 32px 0 64px; background: #fff; }
.hero-updates {
  padding: 48px 0;
  background: linear-gradient(180deg, #fff1f4 0%, #f8fafc 100%);
}
.bottom-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.panel {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg); padding: 22px;
}
.updates-list li, .articles-list li {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 0; border-bottom: 1px dashed var(--c-border-soft);
}
.updates-list li:last-child, .articles-list li:last-child { border-bottom: 0; }
.update-badge {
  font-size: 10px; font-weight: 800; padding: 3px 8px; border-radius: 4px;
  color: #fff; background: var(--c-blue); flex-shrink: 0;
}
.update-badge.new { background: var(--c-green); }
.update-badge.update { background: var(--c-blue); }
.update-text { flex: 1; font-size: 13px; color: var(--c-text); }
.update-date { font-size: 12px; color: var(--c-text-muted); flex-shrink: 0; }
.update-text a:hover { color: var(--c-blue); text-decoration: underline; }

.articles-list .article-thumb {
  width: 48px; height: 48px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #fff1f4, #ede9fe); font-size: 22px; flex-shrink: 0;
}
.articles-list .article-thumb.has-img { padding: 0; overflow: hidden; }
.articles-list .article-thumb img { width: 100%; height: 100%; object-fit: cover; }
.articles-list .article-title { font-size: 13px; font-weight: 700; line-height: 1.5; }
.articles-list .article-title:hover { color: var(--c-blue); text-decoration: underline; }
.articles-list .article-meta { display: flex; align-items: center; gap: 8px; font-size: 11px; color: var(--c-text-muted); margin-top: 4px; }
.articles-list .article-empty { color: var(--c-text-muted); font-size: 13px; justify-content: center; padding: 24px 0; }
.articles-search-summary { margin: 12px 0 0; font-size: 12px; color: var(--c-text-soft); }
.articles-search-summary strong { color: var(--c-blue); }

/* ===== Footer ===== */
.site-footer {
  background: var(--c-bg-soft); border-top: 1px solid var(--c-border);
  padding: 40px 0 24px; color: var(--c-text-soft); font-size: 13px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr auto; gap: 28px;
  margin-bottom: 24px;
}
.footer-grid h4 { font-size: 13px; font-weight: 800; margin: 0 0 10px; color: var(--c-text); }
.footer-grid ul li { margin-bottom: 6px; }
.footer-grid a:hover { color: var(--c-blue); }
.footer-desc { font-size: 12px; margin: 12px 0 0; line-height: 1.6; }
.footer-social { display: flex; gap: 8px; align-items: flex-start; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: #fff; border: 1px solid var(--c-border); font-weight: 800;
}
.footer-social a:hover { background: var(--c-blue); color: #fff; border-color: var(--c-blue); }
.footer-copy { font-size: 11px; color: var(--c-text-muted); text-align: right; padding-top: 16px; border-top: 1px solid var(--c-border); }

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .header-search { width: min(460px, 58vw); }
  .primary-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { max-width: 480px; margin: 8px auto 0; }
  .bucket-grid { grid-template-columns: repeat(2, 1fr); }
  .recommend-grid { grid-template-columns: repeat(2, 1fr); }
  .tool-grid { grid-template-columns: 1fr 1fr; }
  .bottom-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-social { grid-column: span 2; }
}
@media (max-width: 640px) {
  .header-inner { align-items: stretch; flex-direction: column; gap: 10px; }
  .header-search { width: 100%; max-width: none; margin-left: 0; }
  .brand { align-self: flex-start; }
  .hero-updates { padding: 28px 0; }
  .hero { padding: 40px 0 44px; }
  .hero-search { padding: 4px 4px 4px 14px; }
  .search-target { max-width: 72px; padding-right: 6px; margin-right: 5px; }
  .btn-primary { padding: 10px 14px; font-size: 13px; }
  .bucket-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .bucket-card { padding: 20px 16px; }
  .recommend-grid { grid-template-columns: 1fr; }
  .tool-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-social { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}