:root {
  --bg: #0b1329;
  --paper: #16223f;
  --fg: #f1f5f9;
  --muted: #94a3b8;
  --line: #3c4043;
  --divider: rgba(255, 255, 255, 0.2);
  --primary: #8ab4f8;
  --primary-hover: rgba(138, 180, 248, 0.16);
  --on-primary: #1f1f1f;
  --appbar: rgba(11, 19, 41, 0.80);
  --notice-bg: #16223f;
  --notice-fg: #8ab4f8;
  --disabled: rgba(255, 255, 255, 0.5);
  --sidebar-width: 260px;
  --header-height: 64px;
  --container: 1200px;
}

.theme-light {
  --bg: #f1f5f9;
  --paper: #ffffff;
  --fg: #1f1f1f;
  --muted: #5f6368;
  --line: #e0e0e0;
  --divider: rgba(0, 0, 0, 0.15);
  --primary: #1a73e8;
  --primary-hover: rgba(26, 115, 232, 0.16);
  --on-primary: #ffffff;
  --appbar: rgba(241, 245, 249, 0.85);
  --notice-bg: #e8f0fe;
  --notice-fg: #1557b0;
  --disabled: rgba(0, 0, 0, 0.38);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: Roboto, system-ui, -apple-system, "Segoe UI", "Noto Sans JP", sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Appbar */
.appbar {
  position: sticky;
  top: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: var(--header-height);
  padding: 0 20px;
  background: var(--appbar);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
.brand-logo { width: 32px; height: 32px; border-radius: 8px; object-fit: cover; }
.brand-name { font-weight: 800; font-size: 1.25rem; letter-spacing: -0.5px; }
.brand-tag { color: var(--muted); font-size: 0.75rem; }
.spacer { flex: 1; }
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: inherit;
  cursor: pointer;
}
.icon-btn:hover { background: var(--primary-hover); }
.menu-btn { display: none; }
.theme-light .icon-sun, :not(.theme-light) .icon-moon { display: none; }

/* Sidebar */
.shell { display: flex; }
.sidebar {
  position: sticky;
  top: var(--header-height);
  width: var(--sidebar-width);
  height: calc(100vh - var(--header-height));
  padding: 16px 8px;
  border-right: 1px solid var(--line);
  background: var(--appbar);
  backdrop-filter: blur(8px);
  overflow-y: auto;
  flex-shrink: 0;
}
.nav { display: flex; flex-direction: column; }
.nav-item {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 8px 16px;
  border-radius: 4px;
  color: var(--fg);
  text-decoration: none;
  font-weight: 500;
  margin-bottom: 4px;
}
/* MUI の ListItemIcon は min-width:40px で 24px アイコンを収めるため、実効の余白は 16px になる */
.nav-item svg { color: var(--muted); min-width: 40px; flex-shrink: 0; }
.nav-item:hover { background: var(--primary-hover); }
.nav-item.selected { background: var(--primary); color: var(--on-primary); font-weight: 700; }
.nav-item.selected svg { color: var(--on-primary); }

/* Main */
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; min-height: calc(100vh - var(--header-height)); }
.notice { margin: 0; padding: 10px 20px; background: var(--notice-bg); color: var(--notice-fg); font-size: 0.875rem; border-bottom: 1px solid var(--line); }
.view { flex: 1; width: 100%; max-width: var(--container); margin: 0 auto; padding: 20px; }

/* Explore Header & Search Section */
.explore-header { width: 100%; max-width: var(--container); margin: 0 auto; padding: 20px 20px 0; }
.explore-title { font-size: 2.125rem; font-weight: 800; margin: 0 0 8px; }
.explore-desc { color: var(--muted); font-size: 1rem; margin: 0; }
.search-bar-section { display: flex; flex-direction: column; gap: 16px; width: 100%; max-width: var(--container); margin: 20px auto 0; padding: 0 20px; }
.search-input-wrapper { position: relative; width: 100%; }
.search-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.search-input { width: 100%; height: 48px; padding: 8.5px 14px 8.5px 44px; border: 1px solid var(--line); border-radius: 4px; background: transparent; color: inherit; font: inherit; font-size: 0.875rem; transition: border-color 0.2s; }
.search-input:hover { border-color: var(--fg); }
.search-input:focus { outline: none; border: 2px solid var(--primary); padding: 7.5px 13px 7.5px 43px; }
.filter-controls { display: flex; gap: 16px; flex-wrap: wrap; }
.filter-control-item { display: flex; flex-direction: column; gap: 4px; flex: 1 1 200px; min-width: 0; }
.filter-label { color: var(--muted); font-size: 0.75rem; font-weight: 500; }
.select {
  width: 100%; height: 40px; padding: 8.5px 14px; border: 1px solid var(--line); border-radius: 4px; background: transparent; color: inherit; font: inherit; cursor: pointer; appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-position: right 12px center; background-size: 16px; background-repeat: no-repeat; padding-right: 40px;
}
.select:hover { border-color: var(--fg); }
.select:focus { outline: none; border: 2px solid var(--primary); padding: 7.5px 13px; padding-right: 39px; }
.select option { background: var(--paper); color: var(--fg); }

/* Toolbar & Pager */
.toolbar { display: flex; align-items: center; justify-content: space-between; width: 100%; max-width: var(--container); margin: 0 auto; padding: 20px 20px 0; }
.result-count { color: var(--muted); font-size: 0.875rem; }
.pager { display: flex; justify-content: center; align-items: center; gap: 5px; padding: 0 20px 30px; }
.page-btn { min-width: 32px; height: 32px; border: none; border-radius: 16px; background: transparent; color: inherit; font: inherit; cursor: pointer; }
.page-btn:hover:not(:disabled) { background: var(--primary-hover); }
.page-btn:disabled { opacity: .35; }
.page-btn.current { background: var(--primary); color: var(--on-primary); font-weight: 700; }
.page-gap { color: var(--muted); padding: 0 4px; }

/* Cards & List */
.list { display: flex; flex-direction: column; }
.card { display: flex; gap: 20px; padding: 20px; background: transparent; border: none; border-bottom: 1px solid var(--line); color: inherit; text-decoration: none; }
.card:hover { background: var(--primary-hover); }
.icon { width: 48px; height: 48px; border-radius: 4px; overflow: hidden; flex-shrink: 0; background: var(--paper); }
.icon img { width: 100%; height: 100%; object-fit: cover; display: block; }
.icon-empty { border: 1px solid var(--divider); }
.card-body { min-width: 0; flex: 1; }
.card-head { display: flex; align-items: center; gap: 10px; }
.card-title { font-size: 1rem; font-weight: 600; line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.card-desc { margin: 5px 0 0; color: var(--muted); font-size: 0.875rem; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; word-break: break-word; }
.card-meta { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 8px; color: inherit; font-size: 0.75rem; flex-wrap: wrap; }
.card-meta-left { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.card-author { color: var(--muted); }
/* 本体では更新日と区切り点のみ text.disabled で一段落とす */
.card-date, .dot { color: var(--disabled); }
.card-dl { display: inline-flex; align-items: center; gap: 4px; color: var(--muted); font-size: 0.875rem; }
.meta-icon { flex-shrink: 0; color: var(--muted); }

/* Badges & Tags */
.badge { flex-shrink: 0; padding: 1px 8px; border-radius: 4px; font-size: 0.75rem; line-height: 1.8; color: #fff; background: #64748b; }
.badge-mod { background: #1a73e8; }
.badge-plugin { background: #059669; }
.badge-resourcepack { background: #7c3aed; }
.badge-datapack { background: #d97706; }
.badge-shader { background: #0284c7; }
.badge-modpack { background: #dc2626; }
.card-tags { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.tag-badge { display: inline-flex; align-items: center; height: 18px; padding: 0 6px; border-radius: 4px; border: 1px solid var(--line); font-size: 0.65rem; color: var(--muted); }

/* Details */
.detail-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.title { font-size: 1.5rem; font-weight: 600; margin: 0; }
.sub { font-size: 1.25rem; font-weight: 500; margin: 30px 0 10px; }
.meta { display: grid; gap: 5px; margin: 0 0 20px; padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: 4px; }
.def { display: flex; gap: 10px; }
.def dt { color: var(--muted); min-width: 8em; font-size: 0.875rem; }
.def dd { margin: 0; }
.body { white-space: pre-wrap; word-break: break-word; padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: 4px; font: inherit; font-size: 0.9375rem; overflow-x: auto; }
.versions { list-style: none; padding: 0; margin: 0; background: var(--paper); border: 1px solid var(--line); border-radius: 4px; }
.version { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; padding: 10px 20px; border-bottom: 1px solid var(--line); }
.version:last-child { border-bottom: none; }
.vnum { font-weight: 600; }
.vmeta { color: var(--muted); font-size: 0.8125rem; }
.vlink { color: var(--primary); margin-left: auto; text-decoration: none; }
.vlink:hover { text-decoration: underline; }
.empty { color: var(--muted); }
.foot { margin-top: auto; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding: 40px 20px; background: var(--paper); border-top: 1px solid var(--line); color: var(--muted); font-size: 0.875rem; }
.foot a { color: var(--primary); text-decoration: none; }
.foot a:hover { text-decoration: underline; }

/* Responsive */
@media (max-width: 900px) {
  .menu-btn { display: inline-flex; }
  .brand-tag { display: none; }
  .sidebar { position: fixed; top: var(--header-height); left: 0; z-index: 1200; transform: translateX(-100%); transition: transform .2s; }
  .sidebar.open { transform: translateX(0); }
  .explore-title { font-size: 1.6rem; }
}