/* Plain, functional, mobile-first styles. No framework. */
:root {
  --text: #1f2933;
  --muted: #5f6b7a;
  --bg: #ffffff;
  --surface: #f5f7fa;
  --border: #d9dee5;
  --primary: #0b5fa5;
  --primary-dark: #084a80;
  --danger: #b42318;
  --success: #067647;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  line-height: 1.6;
}
a { color: var(--primary); }
a:hover, a:focus { color: var(--primary-dark); }
:focus-visible { outline: 3px solid #ffbf47; outline-offset: 2px; }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 .5rem; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.3rem; margin-top: 2rem; }
h3 { font-size: 1.1rem; }
h4 { font-size: 1rem; }
p { margin: 0 0 .75rem; }
ul { padding-left: 1.2rem; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 560px; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.lead { font-size: 1.05rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: -999px; top: 0; background: #fff; padding: .5rem; z-index: 10; }
.skip-link:focus { left: 8px; }

/* Header / footer */
.site-header { border-bottom: 1px solid var(--border); background: var(--bg); }
.header-inner { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1rem; padding: .6rem 16px; }
.brand { font-weight: 700; text-decoration: none; color: var(--text); font-size: 1.1rem; }
.header-search { display: flex; flex: 1 1 240px; gap: .3rem; }
.header-search input { flex: 1; min-width: 0; }
.header-nav { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem .9rem; margin-left: auto; }
.site-footer { border-top: 1px solid var(--border); margin-top: 3rem; padding: 1.5rem 0; background: var(--surface); font-size: .9rem; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: .5rem 1.2rem; margin-bottom: .5rem; }

/* Forms & buttons */
input[type="text"], input[type="search"], input[type="email"], input[type="password"], input[type="url"],
input[type="number"], input[type="datetime-local"], select, textarea {
  font: inherit; padding: .5rem .6rem; border: 1px solid var(--border); border-radius: 4px; width: 100%; background: #fff; color: var(--text);
}
.header-search input, .inline-form input, .inline-form select { width: auto; }
.button, button, input[type="submit"] {
  font: inherit; display: inline-block; padding: .5rem .9rem; border: 1px solid var(--primary); border-radius: 4px;
  background: #fff; color: var(--primary); text-decoration: none; cursor: pointer; line-height: 1.3;
}
.button-primary, button[type="submit"].button-primary { background: var(--primary); color: #fff; }
.button-primary:hover { background: var(--primary-dark); color: #fff; }
.link-button { border: 0; background: none; padding: 0; color: var(--primary); text-decoration: underline; cursor: pointer; }
form.inline { display: inline; }
.field { margin-bottom: 1rem; }
.field label, .field legend, fieldset legend { display: block; font-weight: 600; margin-bottom: .25rem; }
.field small { display: block; margin-top: .2rem; }
fieldset { border: 1px solid var(--border); border-radius: 4px; padding: .75rem 1rem; margin: 0 0 1rem; }
.checkbox { display: inline-flex; align-items: center; gap: .4rem; font-weight: normal; margin-right: 1rem; }
.checkbox-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: .25rem .5rem; }
.stacked-form { margin-bottom: 1.5rem; }
.errors { border: 1px solid var(--danger); color: var(--danger); padding: .5rem 1rem; border-radius: 4px; margin-bottom: 1rem; }
.flash { padding: .6rem 1rem; border-radius: 4px; margin: 1rem 0; border: 1px solid; }
.flash-notice { border-color: var(--success); color: var(--success); background: #ecfdf3; }
.flash-alert { border-color: var(--danger); color: var(--danger); background: #fef3f2; }

/* Landing */
.hero { padding: 2rem 0 1rem; }
.hero h1 { font-size: 1.8rem; }
.hero-search { display: flex; gap: .5rem; max-width: 640px; margin-top: 1rem; }
.hero-search input { flex: 1; font-size: 1.05rem; }
.stage-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1rem; }
.stage-block { background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: .9rem 1rem; }
.stage-block ul { list-style: none; padding: 0; margin: 0; }
.stage-block li { margin: .35rem 0; }
.stage-block .count { color: var(--muted); font-size: .85rem; margin-left: .3rem; }
.featured-list { list-style: none; padding: 0; }
.featured-list li { padding: .5rem 0; border-bottom: 1px solid var(--border); }
.featured-list .desc { display: block; color: var(--muted); font-size: .95rem; }
.announcements { list-style: none; padding: 0; }
.announcements li { padding: .6rem 0; border-bottom: 1px solid var(--border); }
.announcements time { color: var(--muted); margin-right: .6rem; font-size: .9rem; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { text-align: left; vertical-align: top; padding: .5rem .6rem; border-bottom: 1px solid var(--border); }
thead th { background: var(--surface); }
.membership-table th[scope="row"] { font-weight: 600; }
.digest-form { max-width: 640px; }

/* Resources */
.breadcrumb { font-size: .9rem; color: var(--muted); margin: 1rem 0; }
.subcategory { margin-top: 1.5rem; }
.resource-list { display: grid; gap: .75rem; }
.resource { border: 1px solid var(--border); border-radius: 6px; padding: .8rem 1rem; }
.resource h4 { display: flex; flex-wrap: wrap; align-items: baseline; gap: .5rem; }
.resource .host { color: var(--muted); font-size: .8rem; font-weight: normal; }
.resource .operator { font-size: .9rem; color: var(--muted); margin-bottom: .25rem; }
.resource .desc { margin-bottom: .4rem; }
.badges { display: flex; flex-wrap: wrap; gap: .3rem; margin-bottom: .4rem; }
.badge { font-size: .75rem; padding: .1rem .5rem; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); color: var(--muted); }
.badge-free { color: var(--success); border-color: var(--success); }
.badge-paid { color: var(--danger); border-color: var(--danger); }
.badge-broken { color: #fff; background: var(--danger); border-color: var(--danger); }
.actions { display: flex; gap: 1rem; font-size: .9rem; margin: 0; }
.search-form .filters { margin-top: .5rem; }
.filter-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: .5rem 1rem; }
.pagination { display: flex; gap: 1rem; align-items: center; margin: 1.5rem 0; }
.bookmark-list li { margin: .4rem 0; }
.profile { display: grid; grid-template-columns: max-content 1fr; gap: .25rem 1rem; }
.profile dt { font-weight: 600; }
.profile dd { margin: 0; }
.prose p { margin-bottom: 1rem; }

/* Admin */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1rem; }
.stats div { background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: .8rem 1rem; }
.stats dt { color: var(--muted); font-size: .85rem; }
.stats dd { margin: 0; font-size: 1.5rem; font-weight: 700; }
.inline-form { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; }
.admin-table td .link-button { display: block; margin-bottom: .3rem; }

@media (max-width: 600px) {
  .header-inner { padding: .6rem 0; }
  .header-search { order: 3; flex-basis: 100%; }
  .hero-search { flex-direction: column; }
}