/* 邀请制论坛样式表 — 颜色全部由 CSS 变量控制，[data-theme] 由服务端渲染 */

:root,
[data-theme='light'] {
  --accent: #4f7cff;
  --accent-text: #ffffff;
  --accent-soft: rgba(79, 124, 255, 0.12);
  --bg: #f4f5f7;
  --bg-elev: #ffffff;
  --surface: #ffffff;
  --surface-2: #f7f8fa;
  --text: #1b1e23;
  --text-muted: #666e7a;
  --text-faint: #8b94a1;
  --border: #e4e7ec;
  --border-strong: #d3d8e0;
  --danger: #d93a3a;
  --danger-soft: rgba(217, 58, 58, 0.1);
  --success: #1f8a4c;
  --warn: #b7791f;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 8px 24px rgba(16, 24, 40, 0.05);
  --code-bg: #f2f4f7;
}

[data-theme='dark'] {
  --accent: #6d95ff;
  --accent-text: #0b1020;
  --accent-soft: rgba(109, 149, 255, 0.16);
  --bg: #101216;
  --bg-elev: #171a20;
  --surface: #171a20;
  --surface-2: #1d2129;
  --text: #e7e9ee;
  --text-muted: #9aa3b2;
  --text-faint: #7b8494;
  --border: #262b34;
  --border-strong: #333a46;
  --danger: #ff6b6b;
  --danger-soft: rgba(255, 107, 107, 0.14);
  --success: #4ade80;
  --warn: #fbbf24;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 32px rgba(0, 0, 0, 0.35);
  --code-bg: #1b2028;
}

@media (prefers-color-scheme: dark) {
  [data-theme='auto'] {
    --accent: #6d95ff;
    --accent-text: #0b1020;
    --accent-soft: rgba(109, 149, 255, 0.16);
    --bg: #101216;
    --bg-elev: #171a20;
    --surface: #171a20;
    --surface-2: #1d2129;
    --text: #e7e9ee;
    --text-muted: #9aa3b2;
    --text-faint: #7b8494;
    --border: #262b34;
    --border-strong: #333a46;
    --danger: #ff6b6b;
    --danger-soft: rgba(255, 107, 107, 0.14);
    --success: #4ade80;
    --warn: #fbbf24;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 32px rgba(0, 0, 0, 0.35);
    --code-bg: #1b2028;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue',
    'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 0.5em; font-weight: 650; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.03rem; }
p { margin: 0 0 0.8em; }
hr { border: 0; border-top: 1px solid var(--border); margin: 1.5em 0; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; }

.muted { color: var(--text-muted); }
.small { font-size: 0.85rem; }
.container { width: min(1080px, 100% - 2rem); margin: 0 auto; }
.container-wide { width: min(1240px, 100% - 2rem); margin: 0 auto; }

.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--accent);
  color: var(--accent-text); padding: 0.5rem 1rem; border-radius: 0 0 8px 0; z-index: 50;
}
.skip-link:focus { left: 0; }

.site-header {
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 30;
}
.header-inner { display: flex; align-items: center; gap: 1rem; min-height: 58px; }
.brand { display: flex; align-items: center; gap: 0.5rem; color: var(--text); font-weight: 700; }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 9px; background: var(--accent); color: var(--accent-text);
}
.brand-mark .icon { width: 18px; height: 18px; }
.brand-name { font-size: 1.02rem; }
.main-nav { display: flex; gap: 0.25rem; margin-left: 0.5rem; }
.nav-link {
  display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.4rem 0.7rem;
  border-radius: 8px; color: var(--text-muted); font-size: 0.92rem;
}
.nav-link:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; }

.icon-btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 9px; color: var(--text-muted); border: 1px solid transparent;
}
.icon-btn:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.icon-btn .dot {
  position: absolute; top: 1px; right: 1px; min-width: 17px; height: 17px; padding: 0 4px;
  background: var(--danger); color: #fff; border-radius: 9px;
  font-size: 0.66rem; line-height: 17px; text-align: center; font-weight: 700;
}

.user-menu { position: relative; }
.user-menu summary { list-style: none; cursor: pointer; }
.user-menu summary::-webkit-details-marker { display: none; }
.user-menu-trigger {
  display: inline-flex; align-items: center; gap: 0.45rem; padding: 0.25rem 0.5rem 0.25rem 0.25rem;
  border-radius: 999px; border: 1px solid var(--border);
}
.user-menu-trigger:hover { background: var(--surface-2); }
.user-menu-name { font-size: 0.9rem; font-weight: 600; }
.user-menu-panel {
  position: absolute; right: 0; top: calc(100% + 8px); width: 250px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: var(--shadow); padding: 0.4rem; z-index: 40;
}
.user-menu-head {
  display: flex; gap: 0.6rem; align-items: center; padding: 0.55rem;
  border-bottom: 1px solid var(--border); margin-bottom: 0.35rem;
}
.user-menu-title { font-weight: 600; font-size: 0.92rem; }
.menu-item {
  display: flex; align-items: center; gap: 0.55rem; padding: 0.5rem 0.6rem; border-radius: 8px;
  color: var(--text); font-size: 0.92rem; width: 100%; background: none; border: 0;
  text-align: left; cursor: pointer; font-family: inherit;
}
.menu-item:hover { background: var(--surface-2); text-decoration: none; }
.menu-item-danger { color: var(--danger); }
.menu-form { margin: 0; }
.menu-badge { margin-left: auto; background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: 0 7px; font-size: 0.75rem; font-weight: 700; }

.icon { width: 20px; height: 20px; flex: none; }
.icon.sm { width: 16px; height: 16px; }
.icon.xs { width: 13px; height: 13px; }

main { padding: 1.6rem 0 3rem; }
main > * + * { margin-top: 1.3rem; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 0.9rem; }
.section-head h2 { margin: 0; }
.page-head h1 { margin: 0; }
.page-head p { margin: 0.2rem 0 0; }
.panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 1.15rem 1.25rem; box-shadow: var(--shadow);
}
.list-panel { padding: 0.35rem 0.5rem; }

.flashes { display: grid; gap: 0.5rem; }
.flash {
  display: flex; align-items: center; gap: 0.55rem; padding: 0.65rem 0.9rem;
  border-radius: 10px; border: 1px solid var(--border); background: var(--surface); font-size: 0.93rem;
}
.flash-success { border-color: var(--success); color: var(--success); }
.flash-error { border-color: var(--danger); color: var(--danger); }
.flash-warning { border-color: var(--warn); color: var(--warn); }
.flash-icon { flex: none; }
.motd, .notice, .locked-note {
  display: flex; align-items: center; gap: 0.5rem; background: var(--accent-soft);
  color: var(--text); border-radius: 10px; padding: 0.65rem 0.9rem; font-size: 0.93rem;
}
.locked-note { background: var(--surface-2); color: var(--text-muted); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  padding: 0.5rem 0.95rem; border-radius: 9px; border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text); font-family: inherit; font-size: 0.92rem;
  font-weight: 600; cursor: pointer; white-space: nowrap;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn-primary:hover { filter: brightness(1.08); background: var(--accent); }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text-muted); }
.btn-sm { padding: 0.32rem 0.65rem; font-size: 0.85rem; }
.btn-block { width: 100%; }
.btn.danger, .btn-ghost.danger { color: var(--danger); border-color: var(--danger); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.form { display: grid; gap: 1rem; }
.field { display: grid; gap: 0.35rem; }
.field-label { font-size: 0.88rem; font-weight: 600; color: var(--text); }
.field-hint { font-size: 0.8rem; color: var(--text-faint); }
.field-error { margin: 0; font-size: 0.83rem; color: var(--danger); }
.field-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 0.9rem; }
.input {
  width: 100%; padding: 0.55rem 0.75rem; border-radius: 9px;
  border: 1px solid var(--border-strong); background: var(--bg-elev); color: var(--text);
  font-family: inherit; font-size: 0.94rem;
}
.input:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.input:disabled { background: var(--surface-2); color: var(--text-muted); }
.input-mini { width: auto; padding: 0.25rem 0.45rem; font-size: 0.82rem; }
.input-code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: 0.06em; }
.input-title { font-size: 1.05rem; font-weight: 600; }
.textarea { resize: vertical; min-height: 120px; line-height: 1.7; }
.checkbox { display: flex; align-items: flex-start; gap: 0.55rem; font-size: 0.9rem; }
.checkbox input { margin-top: 0.25rem; }
.form-actions { display: flex; justify-content: flex-end; gap: 0.6rem; }
.filter-form { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; }
.filter-form .input { width: auto; min-width: 140px; }
.search-form { display: flex; gap: 0.6rem; }
.composer-title { display: flex; align-items: center; gap: 0.4rem; font-size: 1.05rem; }
.inline-form { display: inline-flex; align-items: center; gap: 0.35rem; margin: 0; }

.editor-toolbar { display: flex; flex-wrap: wrap; gap: 0.25rem; margin-bottom: 0.4rem; }
.tool-btn {
  min-width: 34px; height: 30px; padding: 0 0.45rem; border-radius: 7px;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text-muted);
  font-family: ui-monospace, monospace; font-size: 0.82rem; cursor: pointer;
}
.tool-btn:hover { color: var(--accent); border-color: var(--accent); }
.md-help { font-size: 0.85rem; color: var(--text-muted); }
.md-help summary { cursor: pointer; }
.md-help ul { margin: 0.5rem 0 0; padding-left: 1.2rem; }
.md-help code { background: var(--code-bg); padding: 0.1rem 0.3rem; border-radius: 5px; }

.hero {
  display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: flex-end; justify-content: space-between;
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 1.6rem 1.5rem; box-shadow: var(--shadow);
}
.hero h1 { font-size: 1.75rem; margin-bottom: 0.3rem; }
.hero-desc { color: var(--text-muted); margin: 0; }
.hero-welcome { margin: 0.7rem 0 0; color: var(--text-muted); font-size: 0.93rem; }
.hero-stats { display: flex; gap: 0.6rem; }
.stat-pill {
  display: grid; justify-items: center; min-width: 84px; padding: 0.6rem 0.9rem;
  background: var(--surface-2); border-radius: 12px;
}
.stat-value { font-size: 1.25rem; font-weight: 700; }
.stat-label { font-size: 0.78rem; color: var(--text-muted); }

.category-grid { display: grid; gap: 0.7rem; }
.category-card {
  display: flex; align-items: center; gap: 1rem; padding: 1rem 1.15rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: 13px;
  color: var(--text); box-shadow: var(--shadow);
}
.category-card:hover { border-color: var(--accent); text-decoration: none; }
.category-card-main { flex: 1; min-width: 0; }
.category-card-main h3 { margin: 0 0 0.15rem; display: flex; align-items: center; gap: 0.5rem; }
.category-card-main p { margin: 0; font-size: 0.9rem; }
.category-card-stats { display: flex; flex-direction: column; align-items: flex-end; font-size: 0.82rem; color: var(--text-muted); white-space: nowrap; }

.user-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.user-chip {
  display: inline-flex; align-items: center; gap: 0.45rem; padding: 0.35rem 0.7rem 0.35rem 0.35rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: 999px;
  color: var(--text); font-size: 0.88rem;
}
.user-chip:hover { border-color: var(--accent); text-decoration: none; }

.topic-list { display: grid; gap: 0.5rem; }
.topic-row {
  display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 0.9rem;
  padding: 0.8rem 1rem; background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; box-shadow: var(--shadow);
}
.topic-row.is-unread { border-left: 3px solid var(--accent); }
.topic-main { min-width: 0; }
.topic-title { margin: 0; font-size: 1rem; display: flex; align-items: center; gap: 0.45rem; flex-wrap: wrap; }
.topic-title a { color: var(--text); }
.topic-title a:hover { color: var(--accent); }
.topic-meta { font-size: 0.82rem; color: var(--text-muted); }
.topic-stats { display: flex; gap: 0.7rem; color: var(--text-muted); font-size: 0.82rem; }
.topic-stat { display: inline-flex; align-items: center; gap: 0.25rem; }
.topic-last { display: grid; justify-items: end; font-size: 0.8rem; color: var(--text-faint); min-width: 92px; }

.tag {
  display: inline-flex; align-items: center; gap: 0.2rem; font-size: 0.72rem; font-weight: 700;
  padding: 0.1rem 0.42rem; border-radius: 6px; background: var(--surface-2); color: var(--text-muted);
}
.tag-pin { background: var(--accent-soft); color: var(--accent); }
.tag-lock { background: var(--danger-soft); color: var(--danger); }

.badge { display: inline-block; padding: 0.05rem 0.42rem; border-radius: 6px; font-size: 0.72rem; font-weight: 700; background: var(--surface-2); color: var(--text-muted); }
.badge-admin { background: var(--danger-soft); color: var(--danger); }
.badge-moderator { background: var(--accent-soft); color: var(--accent); }
.badge-active { background: var(--accent-soft); color: var(--success); }
.badge-suspended { background: var(--surface-2); color: var(--warn); }
.badge-banned, .badge-danger, .badge-revoked, .badge-expired { background: var(--danger-soft); color: var(--danger); }
.badge-used { background: var(--surface-2); color: var(--text-muted); }

.avatar {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; object-fit: cover; background: var(--surface-2); color: #fff;
  font-weight: 700; flex: none; overflow: hidden;
}
.avatar-xs { width: 22px; height: 22px; font-size: 0.66rem; }
.avatar-sm { width: 30px; height: 30px; font-size: 0.75rem; }
.avatar-md { width: 44px; height: 44px; font-size: 0.95rem; }
.avatar-lg { width: 64px; height: 64px; font-size: 1.3rem; }
.avatar-xl { width: 84px; height: 84px; font-size: 1.7rem; }
.avatar-c1 { background: #5b7cfa; }
.avatar-c2 { background: #e0654f; }
.avatar-c3 { background: #23a06a; }
.avatar-c4 { background: #a35bd4; }
.avatar-c5 { background: #d99a2b; }
.avatar-c6 { background: #2f9fb5; }

.topic-header h1 { font-size: 1.45rem; display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.topic-header-meta { display: flex; flex-wrap: wrap; gap: 1rem; font-size: 0.85rem; }
.mod-bar { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.9rem; padding-top: 0.9rem; border-top: 1px solid var(--border); }

.post-list { display: grid; gap: 0.75rem; }
.post {
  display: grid; grid-template-columns: 150px 1fr;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 13px; overflow: hidden; box-shadow: var(--shadow);
}
.post.is-deleted { grid-template-columns: 90px 1fr; opacity: 0.7; }
.post-author {
  display: grid; justify-items: center; gap: 0.35rem; align-content: start; text-align: center;
  padding: 1rem 0.75rem; background: var(--surface-2); border-right: 1px solid var(--border);
  font-size: 0.82rem;
}
.post-author-name { font-weight: 650; color: var(--text); word-break: break-all; }
.post-author-title { color: var(--text-muted); font-size: 0.78rem; }
.post-author-stats { display: flex; gap: 0.7rem; margin: 0.3rem 0 0; font-size: 0.74rem; color: var(--text-faint); }
.post-author-stats dt { margin: 0; }
.post-author-stats dd { margin: 0; font-weight: 650; color: var(--text-muted); }
.post-body { padding: 0.9rem 1.1rem 1.1rem; min-width: 0; }
.post-head {
  display: flex; align-items: center; gap: 0.6rem; padding-bottom: 0.6rem;
  margin-bottom: 0.7rem; border-bottom: 1px solid var(--border); font-size: 0.82rem; color: var(--text-muted);
}
.post-floor { font-weight: 700; color: var(--text-muted); }
.post-time { color: var(--text-faint); }
.post-actions { margin-left: auto; display: flex; gap: 0.5rem; opacity: 0.65; }
.post:hover .post-actions { opacity: 1; }
.post-action {
  display: inline-flex; align-items: center; gap: 0.22rem; background: none; border: 0;
  color: var(--text-muted); font-family: inherit; font-size: 0.8rem; cursor: pointer; padding: 0;
}
.post-action:hover { color: var(--accent); text-decoration: none; }
.post-action.danger:hover { color: var(--danger); }
.post-signature { margin-top: 0.9rem; padding-top: 0.6rem; border-top: 1px dashed var(--border); color: var(--text-faint); font-size: 0.82rem; }
.quoted-post { margin-bottom: 0.8rem; color: var(--text-muted); font-size: 0.9rem; }

.markdown { overflow-wrap: anywhere; }
.markdown > *:first-child { margin-top: 0; }
.markdown > *:last-child { margin-bottom: 0; }
.markdown h1, .markdown h2, .markdown h3 { margin-top: 1.2em; }
.markdown p { margin: 0 0 0.85em; }
.markdown ul, .markdown ol { margin: 0 0 0.85em; padding-left: 1.4em; }
.markdown li { margin-bottom: 0.25em; }
.markdown blockquote {
  margin: 0 0 0.9em; padding: 0.5rem 0.9rem; border-left: 3px solid var(--accent);
  background: var(--surface-2); border-radius: 0 8px 8px 0; color: var(--text-muted);
}
.markdown blockquote p:last-child { margin-bottom: 0; }
.markdown code { background: var(--code-bg); padding: 0.12rem 0.35rem; border-radius: 5px; }
.markdown pre.code-block {
  position: relative; margin: 0 0 0.9em; padding: 0.9rem 1rem; overflow-x: auto;
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px;
}
.markdown pre.code-block code { background: none; padding: 0; font-size: 0.86rem; line-height: 1.6; }
.markdown pre.code-block[data-lang]::before {
  content: attr(data-lang); position: absolute; top: 0.35rem; right: 3.4rem;
  font-size: 0.7rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.06em;
}
.code-copy {
  position: absolute; top: 0.3rem; right: 0.4rem; padding: 0.1rem 0.45rem;
  border: 1px solid var(--border); border-radius: 6px; background: var(--surface);
  color: var(--text-muted); font-size: 0.72rem; cursor: pointer; font-family: inherit;
}
.code-copy:hover { color: var(--accent); border-color: var(--accent); }
.markdown img { max-width: 100%; height: auto; border-radius: 10px; cursor: zoom-in; }
.markdown a.mention { background: var(--accent-soft); color: var(--accent); padding: 0 0.3rem; border-radius: 5px; font-weight: 600; }

.pagination { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0.3rem; margin-top: 1.2rem; }
.page-btn, .page-num {
  display: inline-flex; align-items: center; gap: 0.25rem; padding: 0.35rem 0.7rem;
  border-radius: 8px; border: 1px solid var(--border); background: var(--surface);
  color: var(--text-muted); font-size: 0.86rem;
}
.page-num { min-width: 34px; justify-content: center; }
.page-btn:hover, .page-num:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.page-num.current { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 700; }
.page-btn.disabled { opacity: 0.45; }
.page-gap { color: var(--text-faint); padding: 0 0.2rem; }

.breadcrumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; font-size: 0.85rem; color: var(--text-muted); }
.breadcrumbs a { color: var(--text-muted); }
.crumb-sep { color: var(--text-faint); }
.tabs { display: flex; flex-wrap: wrap; gap: 0.3rem; border-bottom: 1px solid var(--border); padding-bottom: 0.5rem; }
.tab { padding: 0.4rem 0.85rem; border-radius: 8px; color: var(--text-muted); font-size: 0.92rem; }
.tab:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.tab.active { background: var(--accent-soft); color: var(--accent); font-weight: 650; }

.profile-header { display: flex; flex-wrap: wrap; gap: 1.2rem; align-items: flex-start; }
.profile-main { flex: 1; min-width: 220px; }
.profile-main h1 { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.2rem; }
.profile-title { color: var(--accent); font-weight: 600; margin: 0; }
.profile-bio { margin: 0.6rem 0 0; }
.profile-side { display: flex; align-items: center; gap: 1rem; }
.profile-stat { display: grid; justify-items: center; }
.profile-stat strong { font-size: 1.15rem; }
.profile-stat span { font-size: 0.76rem; color: var(--text-muted); }
.signature-panel { font-size: 0.92rem; }

.post-feed { display: grid; gap: 0.6rem; }
.post-feed-item { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 0.85rem 1rem; box-shadow: var(--shadow); }
.post-feed-item p { margin: 0.4rem 0 0; font-size: 0.93rem; color: var(--text-muted); overflow-wrap: anywhere; }

.search-summary { margin: 0.9rem 0 0.6rem; }
.search-results { display: grid; gap: 0.6rem; }
.search-hit { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 0.9rem 1.05rem; box-shadow: var(--shadow); }
.search-hit h3 { margin: 0 0 0.2rem; }
.search-hit h3 a { color: var(--text); }
.search-snippet { margin: 0.45rem 0 0; color: var(--text-muted); font-size: 0.9rem; }

.notification-list { display: grid; gap: 0.5rem; }
.notification {
  display: flex; gap: 0.8rem; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 0.8rem 1rem; box-shadow: var(--shadow);
}
.notification.is-unread { border-left: 3px solid var(--accent); background: var(--bg-elev); }
.notification-main { flex: 1; min-width: 0; }
.notification-main p { margin: 0 0 0.2rem; font-size: 0.92rem; }
.notification-snippet { color: var(--text-muted); font-size: 0.86rem; margin: 0.3rem 0 0; }
.notification-time { white-space: nowrap; }

.admin-head { display: flex; align-items: center; gap: 0.6rem; }
.admin-head h1 { display: flex; align-items: center; gap: 0.55rem; margin: 0; font-size: 1.4rem; }
.admin-tabs { margin-bottom: 0.4rem; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0.7rem; }
.stat-card {
  display: grid; gap: 0.15rem; padding: 1rem; background: var(--surface);
  border: 1px solid var(--border); border-radius: 13px; box-shadow: var(--shadow);
}
.stat-card-value { font-size: 1.6rem; font-weight: 700; }
.stat-card-label { font-size: 0.82rem; color: var(--text-muted); }

.table-wrap { overflow-x: auto; padding: 0; }
.table { width: 100%; border-collapse: collapse; font-size: 0.89rem; }
.table th, .table td { padding: 0.6rem 0.8rem; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table th { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-faint); font-weight: 650; }
.table tr:last-child td { border-bottom: 0; }
.table-actions { display: flex; flex-wrap: wrap; gap: 0.35rem; align-items: center; }
.table-user { display: flex; align-items: center; gap: 0.5rem; }
.invite-code { background: var(--code-bg); padding: 0.15rem 0.45rem; border-radius: 6px; font-size: 0.88rem; font-weight: 600; }

.log-row, .report-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem;
  padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--border); font-size: 0.88rem;
}
.log-row:last-child, .report-row:last-child { border-bottom: 0; }
.report-main { flex: 1; min-width: 240px; display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.report-main p { flex-basis: 100%; margin: 0; }

.empty-state {
  display: grid; justify-items: center; gap: 0.6rem; padding: 2.5rem 1rem;
  background: var(--surface); border: 1px dashed var(--border-strong); border-radius: 14px;
  color: var(--text-muted); text-align: center;
}
.empty-icon { width: 34px; height: 34px; color: var(--text-faint); }
.error-panel { text-align: center; padding: 2.5rem 1.5rem; }
.error-code { font-size: 2.6rem; font-weight: 800; color: var(--accent); line-height: 1; }

.auth-page main { max-width: 520px; margin: 0 auto; }
.auth-panel { display: grid; gap: 1.1rem; }
.auth-head h1 { margin: 0; }
.auth-head p { margin: 0.2rem 0 0; }
.auth-foot { text-align: center; font-size: 0.9rem; padding-top: 0.4rem; border-top: 1px solid var(--border); }

.site-footer { border-top: 1px solid var(--border); background: var(--bg-elev); padding: 1.2rem 0; margin-top: 2rem; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: space-between; font-size: 0.85rem; color: var(--text-muted); }

@media (max-width: 860px) {
  .post { grid-template-columns: 1fr; }
  .post-author {
    grid-template-columns: auto auto 1fr; justify-items: start; align-items: center;
    border-right: 0; border-bottom: 1px solid var(--border); text-align: left; padding: 0.7rem 0.9rem;
  }
  .post-author-stats { display: none; }
  .topic-row { grid-template-columns: auto 1fr; }
  .topic-stats, .topic-last { grid-column: 2; justify-items: start; }
}

@media (max-width: 620px) {
  body { font-size: 14.5px; }
  .container, .container-wide { width: calc(100% - 1.4rem); }
  .header-inner { flex-wrap: wrap; padding: 0.5rem 0; gap: 0.6rem; }
  .main-nav { order: 3; width: 100%; overflow-x: auto; }
  .brand-name { font-size: 0.98rem; }
  .user-menu-name { display: none; }
  .hero { flex-direction: column; align-items: stretch; }
  .hero-stats { justify-content: space-between; }
  .stat-pill { flex: 1; min-width: 0; }
  .category-card-stats { display: none; }
  .table { font-size: 0.84rem; }

  /* iOS Safari：输入框字号小于 16px 时，聚焦会强制放大整个页面且不会自动缩回。
     手机上登录/注册体验最大的痛点就是这个，所以移动端输入类控件一律 16px。 */
  .input, .textarea, select { font-size: 16px; }

  /* 触控目标撑到 ~44px（Apple HIG 建议的最小可点尺寸），减少误触和点不中 */
  .icon-btn { width: 44px; height: 44px; }
  .btn { padding: 0.62rem 1rem; }
  .btn-sm { padding: 0.5rem 0.75rem; font-size: 0.9rem; }
  .nav-link { padding: 0.55rem 0.75rem; }
  .tool-btn { min-width: 40px; height: 38px; }
  .page-btn, .page-num { padding: 0.5rem 0.8rem; }

  /* 表单按钮铺满整行，主操作放上面，拇指够得着 */
  .form-actions { flex-direction: column-reverse; }
  .form-actions .btn { width: 100%; }

  /* 顶部导航横向滑动：去掉滚动条，开启惯性滚动 */
  .main-nav { -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .main-nav::-webkit-scrollbar { display: none; }
}

@media print {
  .site-header, .site-footer, .post-actions, .composer, .pagination { display: none; }
}
.locked-panel { display: grid; justify-items: center; gap: 0.5rem; text-align: center; padding: 2.4rem 1.5rem; }
.locked-panel h2 { margin: 0; }
.locked-panel p { max-width: 460px; margin: 0; }
.locked-icon { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); }
.locked-icon .icon { width: 24px; height: 24px; }
.locked-actions { display: flex; gap: 0.6rem; margin-top: 0.6rem; flex-wrap: wrap; justify-content: center; }