/* =====================================================
   OSK Share Theme - アプリケーションスタイル
   デザイン方針：ミニマル / モダンフラット / SaaSダッシュボード風
   ベース：白・淡いグレー / アクセント1色（インディゴ）
   ===================================================== */

:root {
	/* カラーパレット */
	--osk-bg: #eef2f6;
	--osk-surface: #ffffff;
	--osk-surface-muted: #f7f9fc;
	--osk-border: #cfd7e3;
	--osk-border-strong: #aeb9c8;
	--osk-text: #172033;
	--osk-text-muted: #526071;
	--osk-accent: #4051bf;
	--osk-accent-hover: #33439f;
	--osk-accent-soft: #e7ebff;
	--osk-accent-border: #c4ccff;
	--osk-success: #277a55;
	--osk-success-soft: #e3f3eb;
	--osk-success-border: #9fd2ba;
	--osk-warning: #b96418;
	--osk-warning-soft: #f9ead8;
	--osk-warning-border: #dfb987;
	--osk-danger: #b63d3d;
	--osk-danger-soft: #f8e3e3;
	--osk-danger-border: #e0a2a2;
	--osk-radius: 10px;
	--osk-radius-sm: 6px;
	--osk-shadow: 0 1px 2px rgba(16, 24, 40, 0.08), 0 3px 10px rgba(16, 24, 40, 0.05);
	--osk-shadow-lg: 0 10px 28px rgba(16, 24, 40, 0.16);
	--osk-font: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "BIZ UDPGothic", Meiryo, system-ui, -apple-system, sans-serif;
	--osk-sidebar-w: 240px;
}

/* ---------- リセット・ベース ---------- */
*, *::before, *::after { box-sizing: border-box; }
body {
	margin: 0;
	font-family: var(--osk-font);
	font-size: 15px;
	line-height: 1.7;
	color: var(--osk-text);
	background: var(--osk-bg);
	-webkit-font-smoothing: antialiased;
}
a { color: var(--osk-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0; line-height: 1.4; font-weight: 700; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; height: auto; }

/* ---------- アプリレイアウト ---------- */
.osk-app { display: flex; min-height: 100vh; }
.osk-main-wrap { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.osk-main { flex: 1; padding: 28px 32px 64px; max-width: 1080px; width: 100%; margin: 0 auto; }

/* サイドバー */
.osk-sidebar {
	width: var(--osk-sidebar-w);
	flex-shrink: 0;
	background: var(--osk-surface);
	border-right: 1px solid var(--osk-border-strong);
	box-shadow: 1px 0 0 rgba(16, 24, 40, 0.03);
	display: flex;
	flex-direction: column;
	position: sticky;
	top: 0;
	height: 100vh;
}
.osk-sidebar-brand { padding: 20px 20px 16px; }
.osk-sidebar-brand a { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.osk-brand-mark {
	display: inline-flex; align-items: center; justify-content: center;
	width: 36px; height: 36px; border-radius: 8px;
	background: var(--osk-accent); color: #fff;
	font-weight: 700; font-size: 13px; letter-spacing: 0.5px;
}
.osk-brand-text { font-size: 13px; font-weight: 700; color: var(--osk-text); }
.osk-sidebar-nav { padding: 12px; }
.osk-nav-link {
	display: flex; align-items: center; gap: 10px;
	padding: 10px 12px; margin-bottom: 2px;
	border: 1px solid transparent;
	border-radius: var(--osk-radius-sm);
	color: var(--osk-text-muted); font-size: 14px; font-weight: 500;
	transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.osk-nav-link:hover { background: var(--osk-surface-muted); border-color: var(--osk-border); color: var(--osk-text); text-decoration: none; }
.osk-nav-link.is-active { background: var(--osk-accent-soft); border-color: var(--osk-accent-border); color: var(--osk-accent-hover); font-weight: 700; }
.osk-nav-icon {
	width: 20px; height: 20px;
	display: inline-flex; align-items: center; justify-content: center;
	flex: 0 0 20px;
	text-align: center; line-height: 1;
}
.osk-svg-icon { display: block; width: 1em; height: 1em; }
.osk-nav-icon .osk-svg-icon { width: 16px; height: 16px; }

/* トップバー */
.osk-topbar {
	display: flex; align-items: center; gap: 16px;
	padding: 14px 32px;
	background: var(--osk-accent);
	color: #fff;
	border-bottom: 1px solid var(--osk-accent-hover);
	box-shadow: 0 2px 8px rgba(16, 24, 40, 0.12);
	position: sticky; top: 0; z-index: 20;
}
.osk-page-title { color: #fff; font-size: 17px; flex: 1; }
.osk-topbar-user { display: flex; align-items: center; gap: 12px; }
.osk-user-name, .osk-user-company { font-size: 13px; color: #fff; }
.osk-topbar .osk-btn-ghost {
	background: rgba(255, 255, 255, 0.16);
	border-color: rgba(255, 255, 255, 0.78);
	color: #fff;
	font-weight: 700;
	box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}
.osk-topbar .osk-btn-ghost:hover {
	background: rgba(255, 255, 255, 0.26);
	border-color: #fff;
	color: #fff;
}
.osk-topbar .osk-btn:focus-visible { outline-color: #fff; }
.osk-menu-toggle { display: none; }
.osk-topbar .osk-menu-toggle span { background: #fff; }

/* ---------- 認証系レイアウト ---------- */
.osk-auth-body { background: var(--osk-bg); }
.osk-auth {
	min-height: 100vh;
	display: flex; align-items: center; justify-content: center;
	padding: 24px;
}
.osk-auth-card {
	width: 100%; max-width: 420px;
	background: var(--osk-surface);
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius);
	box-shadow: var(--osk-shadow-lg);
	padding: 36px 32px;
}
.osk-auth-card.is-wide { max-width: 560px; }
.osk-auth-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.osk-auth-title { font-size: 20px; margin-bottom: 16px; }
.osk-auth-lead { font-size: 13.5px; color: var(--osk-text-muted); margin-bottom: 20px; }
.osk-auth-links { margin-top: 20px; display: flex; flex-direction: column; gap: 8px; font-size: 13.5px; }

/* ---------- パネル・カード ---------- */
.osk-panel {
	background: var(--osk-surface);
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius);
	box-shadow: var(--osk-shadow);
	padding: 24px;
	margin-bottom: 24px;
}
.osk-panel-head {
	display: flex; align-items: center; justify-content: space-between;
	gap: 12px; flex-wrap: wrap;
	padding-bottom: 14px; margin-bottom: 18px;
	border-bottom: 1px solid var(--osk-border);
}
.osk-panel-head h2 { font-size: 16px; }
.osk-section-label { font-size: 14px; color: var(--osk-text); font-weight: 700; margin-bottom: 12px; }
.osk-empty { color: var(--osk-text-muted); background: var(--osk-surface-muted); border: 1px dashed var(--osk-border); border-radius: var(--osk-radius-sm); padding: 24px; text-align: center; }
.osk-link { font-size: 13.5px; }

/* ---------- ボタン ---------- */
.osk-btn {
	display: inline-flex; align-items: center; justify-content: center; gap: 6px;
	padding: 9px 18px;
	border: 1px solid transparent;
	border-radius: var(--osk-radius-sm);
	font-family: inherit; font-size: 14px; font-weight: 600;
	cursor: pointer; text-decoration: none;
	transition: background 0.15s ease, border-color 0.15s ease, transform 0.05s ease, box-shadow 0.15s ease;
	white-space: nowrap;
}
.osk-btn:hover { text-decoration: none; }
.osk-btn:active { transform: translateY(1px); }
.osk-btn:focus-visible { outline: 2px solid var(--osk-accent); outline-offset: 2px; }
.osk-btn-primary { background: var(--osk-accent); color: #fff; }
.osk-btn-primary:hover { background: var(--osk-accent-hover); color: #fff; }
.osk-btn-secondary { background: var(--osk-surface-muted); color: var(--osk-text); border-color: var(--osk-border-strong); }
.osk-btn-secondary:hover { background: var(--osk-surface); border-color: var(--osk-text-muted); }
.osk-btn-danger { background: var(--osk-surface); color: var(--osk-danger); border-color: var(--osk-danger); }
.osk-btn-danger:hover { background: var(--osk-danger); color: #fff; }
.osk-btn-ghost { background: transparent; color: var(--osk-text-muted); }
.osk-btn-ghost:hover { background: var(--osk-surface-muted); color: var(--osk-text); }
.osk-btn-sm { padding: 5px 12px; font-size: 13px; }
.osk-btn-block { width: 100%; }
.osk-btn.is-loading { opacity: 0.65; pointer-events: none; }

/* ---------- フォーム ---------- */
.osk-form { margin: 0; }
.osk-field { margin-bottom: 18px; }
.osk-field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; }
.osk-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.osk-field-help { font-size: 12.5px; color: var(--osk-text-muted); margin: 6px 0 0; }
.osk-required {
	display: inline-block; margin-left: 6px; padding: 1px 6px;
	background: var(--osk-danger-soft); color: var(--osk-danger);
	border-radius: 4px; font-size: 11px; font-weight: 700;
}
.osk-input, .osk-textarea, .osk-select {
	width: 100%;
	padding: 9px 12px;
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius-sm);
	font-family: inherit; font-size: 14.5px; color: var(--osk-text);
	background: var(--osk-surface);
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.osk-input:focus, .osk-textarea:focus, .osk-select:focus {
	outline: none;
	border-color: var(--osk-accent);
	box-shadow: 0 0 0 3px var(--osk-accent-soft);
}
.osk-textarea { resize: vertical; min-height: 90px; }
.osk-select { width: auto; min-width: 140px; }
.osk-input-inline { width: auto; max-width: 240px; }
.osk-checkbox { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; font-weight: 500 !important; }
.osk-checkbox input { width: 16px; height: 16px; accent-color: var(--osk-accent); }
.osk-form-actions { display: flex; gap: 12px; align-items: center; margin-top: 20px; }
.osk-inline-form { display: inline-flex; gap: 8px; align-items: center; }

/* ハニーポット（視覚的に完全に隠す） */
.osk-hp {
	position: absolute !important;
	left: -9999px !important;
	width: 1px; height: 1px; overflow: hidden;
}

/* トグルスイッチ */
label.osk-switch { display: inline-flex; align-items: center; gap: 12px; cursor: pointer; }
.osk-switch input { position: absolute; opacity: 0; }
.osk-switch-slider {
	width: 44px; height: 24px; border-radius: 12px;
	background: var(--osk-border); position: relative; flex-shrink: 0;
	transition: background 0.2s ease;
}
.osk-switch-slider::after {
	content: ""; position: absolute; top: 2px; left: 2px;
	width: 20px; height: 20px; border-radius: 50%;
	background: #fff; box-shadow: var(--osk-shadow);
	transition: transform 0.2s ease;
}
.osk-switch input:checked + .osk-switch-slider { background: var(--osk-accent); }
.osk-switch input:checked + .osk-switch-slider::after { transform: translateX(20px); }
.osk-switch-label { font-size: 14.5px; font-weight: 600; }

/* ファイル添付 */
.osk-file-input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.osk-file-label {
	display: flex; align-items: center; gap: 12px;
	padding: 10px 12px;
	border: 1px dashed var(--osk-border-strong);
	border-radius: var(--osk-radius-sm);
	cursor: pointer;
	transition: border-color 0.15s ease, background 0.15s ease;
}
.osk-file-label:hover { border-color: var(--osk-accent); background: var(--osk-accent-soft); }
.osk-file-button {
	padding: 5px 12px; border-radius: var(--osk-radius-sm);
	background: var(--osk-surface-muted); border: 1px solid var(--osk-border-strong);
	font-size: 13px; font-weight: 600; flex-shrink: 0;
}
.osk-file-names { font-size: 13px; color: var(--osk-text-muted); word-break: break-all; }

/* ---------- ヘルプ ---------- */
.osk-help-page {
	display: flex;
	flex-direction: column;
	gap: 20px;
}
.osk-help-intro p {
	max-width: 760px;
	margin-bottom: 18px;
	color: var(--osk-text-muted);
}
.osk-help-quick-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
}
.osk-help-grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 18px;
}
.osk-help-section h2 {
	font-size: 16px;
	margin-bottom: 14px;
	padding-bottom: 10px;
	border-bottom: 1px solid var(--osk-border);
}
.osk-help-list {
	display: flex;
	flex-direction: column;
	gap: 9px;
	padding-left: 1.2em;
	list-style: disc;
	color: var(--osk-text-muted);
	font-size: 14px;
}
.osk-help-list li::marker { color: var(--osk-accent); }
.osk-help-steps {
	display: flex;
	flex-direction: column;
	gap: 12px;
	list-style: none;
}
.osk-help-steps li {
	display: grid;
	grid-template-columns: 28px 1fr;
	gap: 10px;
	align-items: start;
}
.osk-help-steps span {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 28px;
	height: 28px;
	border-radius: 50%;
	background: var(--osk-accent-soft);
	border: 1px solid var(--osk-accent-border);
	color: var(--osk-accent-hover);
	font-weight: 700;
	font-size: 13px;
}
.osk-help-steps p {
	margin: 2px 0 0;
	color: var(--osk-text-muted);
	font-size: 14px;
}
.osk-help-steps p strong,
.osk-help-list li strong {
	color: var(--osk-text);
}
/* ページ内目次（アンカーチップ） */
.osk-help-toc {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px;
	margin-top: 16px;
	padding-top: 14px;
	border-top: 1px solid var(--osk-border);
}
.osk-help-toc-label {
	font-size: 13px;
	font-weight: 700;
	color: var(--osk-text-muted);
}
.osk-help-toc a {
	display: inline-block;
	padding: 4px 12px;
	border: 1px solid var(--osk-border);
	border-radius: 999px;
	font-size: 13px;
	color: var(--osk-text-muted);
	text-decoration: none;
	transition: all 0.15s ease;
}
.osk-help-toc a:hover {
	border-color: var(--osk-accent);
	color: var(--osk-accent);
}
/* アンカー着地位置の余白と滑らかなスクロール */
html { scroll-behavior: smooth; }
.osk-help-section[id] { scroll-margin-top: 20px; }
/* 補足ボックス */
.osk-help-note {
	margin-top: 16px;
	padding: 14px 16px;
	background: var(--osk-accent-soft);
	border: 1px solid var(--osk-accent-border);
	border-left-width: 4px;
	border-radius: var(--osk-radius-sm);
	font-size: 14px;
	color: var(--osk-text-muted);
	line-height: 1.7;
}
.osk-help-note strong { color: var(--osk-accent-hover); }
/* よくある質問（アコーディオン） */
.osk-help-faq {
	display: flex;
	flex-direction: column;
	gap: 10px;
}
.osk-help-faq details {
	border: 1px solid var(--osk-border);
	border-radius: var(--osk-radius-sm);
	background: var(--osk-surface, transparent);
	overflow: hidden;
}
.osk-help-faq summary {
	display: flex;
	align-items: baseline;
	gap: 10px;
	padding: 13px 16px;
	font-size: 14px;
	font-weight: 700;
	cursor: pointer;
	list-style: none;
	transition: background 0.15s ease;
}
.osk-help-faq summary::-webkit-details-marker { display: none; }
.osk-help-faq summary::before {
	content: "Q";
	flex: none;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 22px;
	height: 22px;
	border-radius: 50%;
	background: var(--osk-accent-soft);
	color: var(--osk-accent);
	font-size: 12px;
	font-weight: 800;
	transform: translateY(3px);
}
.osk-help-faq summary:hover { background: var(--osk-accent-soft); }
.osk-help-faq details[open] summary { border-bottom: 1px solid var(--osk-border); }
.osk-help-faq details p {
	margin: 0;
	padding: 13px 16px 15px 48px;
	font-size: 14px;
	line-height: 1.8;
	color: var(--osk-text-muted);
}
.osk-help-contact {
	margin: 18px 0 0;
	padding-top: 14px;
	border-top: 1px dashed var(--osk-border);
	font-size: 14px;
	color: var(--osk-text-muted);
}
/* セクション冒頭のリード文 */
.osk-help-lead {
	margin-bottom: 14px;
	font-size: 14px;
	color: var(--osk-text-muted);
}
/* 仕様早見表・タブ構成テーブル */
.osk-help-table {
	font-size: 14px;
}
.osk-help-table th {
	white-space: nowrap;
}
.osk-help-table td:first-child {
	font-weight: 700;
	white-space: nowrap;
	color: var(--osk-text);
}
.osk-help-table td {
	color: var(--osk-text-muted);
	line-height: 1.7;
}
/* ---------- 通知メッセージ ---------- */
.osk-notice {
	display: flex; align-items: flex-start; gap: 10px;
	padding: 12px 16px; margin-bottom: 20px;
	border: 1px solid transparent;
	border-left-width: 4px;
	border-radius: var(--osk-radius-sm);
	font-size: 14px; font-weight: 500;
	animation: osk-slide-in 0.25s ease;
}
@keyframes osk-slide-in {
	from { opacity: 0; transform: translateY(-6px); }
	to { opacity: 1; transform: translateY(0); }
}
.osk-notice-success { background: var(--osk-success-soft); border-color: var(--osk-success-border); color: var(--osk-success); }
.osk-notice-error { background: var(--osk-danger-soft); border-color: var(--osk-danger-border); color: var(--osk-danger); }
.osk-notice-info { background: var(--osk-accent-soft); border-color: var(--osk-accent-border); color: var(--osk-accent-hover); }
.osk-notice-icon::before { font-weight: 700; }
.osk-notice-success .osk-notice-icon::before { content: "✓"; }
.osk-notice-error .osk-notice-icon::before { content: "！"; }

/* ---------- バッジ ---------- */
.osk-badge {
	display: inline-block; padding: 2px 10px;
	border-radius: 999px; font-size: 12px; font-weight: 700;
	background: var(--osk-surface-muted); border: 1px solid var(--osk-border);
	color: var(--osk-text-muted);
}
.osk-badge-category { background: var(--osk-accent-soft); border-color: var(--osk-accent-border); color: var(--osk-accent-hover); }
.status-open { background: var(--osk-danger-soft); border-color: var(--osk-danger-border); color: var(--osk-danger); }
.status-checking { background: var(--osk-warning-soft); border-color: var(--osk-warning-border); color: var(--osk-warning); }
.status-need-reply { background: #eee7fb; border-color: #cbb8ec; color: #7042a8; }
.status-done { background: var(--osk-success-soft); border-color: var(--osk-success-border); color: var(--osk-success); }
.status-hold { background: var(--osk-bg); color: var(--osk-text-muted); }
.osk-badge-app-pending { background: var(--osk-warning-soft); border-color: var(--osk-warning-border); color: var(--osk-warning); }
.osk-badge-app-approved { background: var(--osk-success-soft); border-color: var(--osk-success-border); color: var(--osk-success); }
.osk-badge-app-rejected { background: var(--osk-bg); color: var(--osk-text-muted); }
.osk-badge-suspended { background: var(--osk-danger-soft); border-color: var(--osk-danger-border); color: var(--osk-danger); }
.osk-badge-active { background: var(--osk-success-soft); border-color: var(--osk-success-border); color: var(--osk-success); }
.osk-badge-pending { background: var(--osk-warning-soft); border-color: var(--osk-warning-border); color: var(--osk-warning); }
.osk-badge-edited { background: var(--osk-bg); color: var(--osk-text-muted); font-weight: 500; }

/* ---------- ダッシュボード ---------- */
.osk-action-cards {
	display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
	gap: 16px; margin-bottom: 28px;
}
.osk-action-card {
	display: flex; flex-direction: column; gap: 4px;
	padding: 20px;
	background: var(--osk-surface);
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius);
	box-shadow: var(--osk-shadow);
	transition: box-shadow 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}
.osk-action-card:hover {
	text-decoration: none;
	border-color: var(--osk-accent);
	box-shadow: var(--osk-shadow-lg);
	transform: translateY(-2px);
}
.osk-action-icon {
	width: 40px; height: 40px; border-radius: 10px;
	display: flex; align-items: center; justify-content: center;
	background: var(--osk-accent-soft); color: var(--osk-accent);
	font-size: 18px; margin-bottom: 8px;
}
.osk-action-icon .osk-svg-icon { width: 20px; height: 20px; }
.osk-action-title { font-size: 15px; font-weight: 700; color: var(--osk-text); }
.osk-action-desc { font-size: 13px; color: var(--osk-text-muted); }
.osk-count-alert { color: var(--osk-danger); }

/* 統計カード（管理画面） */
.osk-stat-cards {
	display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
	gap: 16px; margin-bottom: 24px;
}
.osk-stat-card {
	display: flex; flex-direction: column;
	padding: 18px 20px;
	background: var(--osk-surface);
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius);
	box-shadow: var(--osk-shadow);
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.osk-stat-card:hover { text-decoration: none; border-color: var(--osk-accent); }
.osk-stat-card.has-alert { border-color: var(--osk-danger); }
.osk-stat-value { font-size: 28px; font-weight: 700; color: var(--osk-text); }
.osk-stat-card.has-alert .osk-stat-value { color: var(--osk-danger); }
.osk-stat-label { font-size: 13px; color: var(--osk-text-muted); }

/* ---------- スレッド一覧 ---------- */
.osk-filter-bar {
	background: var(--osk-surface);
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius);
	box-shadow: var(--osk-shadow);
	padding: 16px;
	margin-bottom: 20px;
	display: flex; flex-direction: column; gap: 12px;
}
.osk-filter-search .osk-input { width: 100%; }
.osk-filter-selects { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.osk-list-head {
	display: flex; align-items: center; justify-content: space-between;
	gap: 12px; margin-bottom: 16px;
}
.osk-result-count { margin: 0; font-size: 13.5px; color: var(--osk-text-muted); }

.osk-thread-list { display: flex; flex-direction: column; gap: 12px; }
.osk-thread-card {
	background: var(--osk-surface);
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius);
	box-shadow: var(--osk-shadow);
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.osk-thread-card:hover,
.osk-thread-card:focus-within {
	border-color: var(--osk-accent);
	box-shadow: var(--osk-shadow-lg);
}
.osk-thread-card-link {
	display: flex; justify-content: space-between; gap: 20px;
	padding: 18px 20px;
	color: inherit;
	text-decoration: none;
	border-radius: inherit;
}
.osk-thread-card-link:hover { text-decoration: none; }
.osk-thread-card-link:focus-visible {
	outline: 2px solid var(--osk-accent);
	outline-offset: 3px;
}
.osk-thread-card-main { min-width: 0; flex: 1; }
.osk-thread-card-badges { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 6px; }
.osk-thread-card-title { color: var(--osk-text); font-size: 15.5px; margin-bottom: 4px; }
.osk-thread-card-link:hover .osk-thread-card-title,
.osk-thread-card-link:focus-visible .osk-thread-card-title { color: var(--osk-accent); }
.osk-thread-card-excerpt {
	font-size: 13px; color: var(--osk-text-muted); margin: 0;
	display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.osk-thread-card-meta {
	display: flex; flex-direction: column; align-items: flex-end; justify-content: center;
	gap: 4px; flex-shrink: 0; font-size: 12.5px; color: var(--osk-text-muted);
	text-align: right;
}
.osk-meta-counts { display: flex; gap: 10px; }

/* ---------- スレッド詳細 ---------- */
.osk-thread-header { border-bottom: 1px solid var(--osk-border); padding-bottom: 16px; margin-bottom: 20px; }
.osk-thread-title { font-size: 20px; margin: 8px 0; }
.osk-thread-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13px; color: var(--osk-text-muted); margin-bottom: 14px; }
.osk-thread-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.osk-thread-body { font-size: 15px; word-wrap: break-word; overflow-wrap: break-word; }
.osk-thread-attachments { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--osk-border); }

/* 添付ファイルカード */
.osk-attachments { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.osk-attachment-card {
	display: flex; align-items: center; gap: 12px;
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius-sm);
	padding: 8px 12px;
	transition: border-color 0.15s ease, background 0.15s ease;
}
.osk-attachment-card:hover { border-color: var(--osk-accent); background: var(--osk-accent-soft); }
.osk-attachment-link { display: flex; align-items: center; gap: 10px; min-width: 0; flex: 1; color: var(--osk-text); }
.osk-attachment-link:hover { text-decoration: none; }
.osk-attachment-name { font-size: 13.5px; font-weight: 600; word-break: break-all; }
.osk-attachment-size { font-size: 12px; color: var(--osk-text-muted); flex-shrink: 0; }
.osk-attachment-delete { flex-shrink: 0; font-size: 12.5px; color: var(--osk-danger); }

/* ---------- コメント ---------- */
.osk-comment-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }
.osk-comment-card {
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius);
	padding: 16px 18px;
	background: var(--osk-surface);
	box-shadow: var(--osk-shadow);
}
.osk-comment-card:target { border-color: var(--osk-accent); box-shadow: 0 0 0 3px var(--osk-accent-soft); }
.osk-comment-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 8px; }
.osk-comment-author { font-weight: 700; font-size: 14px; }
.osk-comment-date { font-size: 12.5px; color: var(--osk-text-muted); }
.osk-comment-body { font-size: 14.5px; word-wrap: break-word; }
.osk-comment-actions { display: flex; gap: 10px; align-items: center; margin-top: 10px; }
.osk-comment-note { font-size: 12px; color: var(--osk-text-muted); }
.osk-comment-edit-form { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--osk-border-strong); }
.osk-comment-form-wrap { padding-top: 20px; border-top: 1px solid var(--osk-border-strong); }

/* ---------- テーブル ---------- */
.osk-table-wrap { overflow-x: auto; border: 1px solid var(--osk-border-strong); border-radius: var(--osk-radius-sm); background: var(--osk-surface); }
.osk-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 14px; }
.osk-table th {
	text-align: left; padding: 10px 12px;
	font-size: 12.5px; color: var(--osk-text); font-weight: 700;
	background: var(--osk-surface-muted);
	border-bottom: 2px solid var(--osk-border-strong);
	white-space: nowrap;
}
.osk-table td { padding: 12px; border-bottom: 1px solid var(--osk-border); vertical-align: middle; }
.osk-table tbody tr { transition: background 0.1s ease; }
.osk-table tbody tr:hover { background: var(--osk-bg); }

/* ---------- 管理画面 ---------- */
.osk-admin-tabs {
	display: flex; flex-wrap: wrap; gap: 4px;
	background: var(--osk-surface);
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius);
	padding: 6px;
	margin-bottom: 20px;
	overflow-x: auto;
}
.osk-admin-tab {
	padding: 8px 16px; border-radius: var(--osk-radius-sm);
	font-size: 13.5px; font-weight: 600; color: var(--osk-text-muted);
	white-space: nowrap;
	transition: background 0.15s ease, color 0.15s ease;
}
.osk-admin-tab:hover { background: var(--osk-surface-muted); color: var(--osk-text); text-decoration: none; }
.osk-admin-tab.is-active { background: var(--osk-accent); color: #fff; }

.osk-filter-links { display: flex; gap: 4px; flex-wrap: wrap; }
.osk-filter-link {
	padding: 4px 12px; border-radius: 999px;
	font-size: 13px; font-weight: 600; color: var(--osk-text-muted);
}
.osk-filter-link:hover { background: var(--osk-surface-muted); text-decoration: none; }
.osk-filter-link.is-active { background: var(--osk-accent-soft); color: var(--osk-accent-hover); }

.osk-detail-list { margin: 0 0 20px; }
.osk-detail-row {
	display: grid; grid-template-columns: 160px 1fr; gap: 12px;
	padding: 12px 0; border-bottom: 1px solid var(--osk-border);
}
.osk-detail-row dt { font-size: 13px; font-weight: 700; color: var(--osk-text); }
.osk-detail-row dd { margin: 0; font-size: 14.5px; word-break: break-all; }

.osk-approval-actions { display: flex; flex-direction: column; gap: 16px; margin-bottom: 16px; }
.osk-reject-block summary { list-style: none; display: inline-flex; width: fit-content; }
.osk-reject-block summary::-webkit-details-marker { display: none; }
.osk-reject-block[open] summary { margin-bottom: 12px; }
.osk-back-link { margin: 8px 0 0; }
.osk-category-add { margin-bottom: 20px; }
.osk-category-add .osk-input { max-width: 280px; }

.osk-log-list { display: flex; flex-direction: column; }
.osk-log-item {
	display: flex; flex-wrap: wrap; gap: 12px;
	padding: 10px 0; font-size: 13.5px;
	border-bottom: 1px solid var(--osk-border);
}
.osk-log-item:last-child { border-bottom: none; }
.osk-log-date { color: var(--osk-text-muted); }
.osk-log-actor { font-weight: 600; }
.osk-log-action { color: var(--osk-accent); }

/* ---------- ページネーション ---------- */
.osk-pagination { display: flex; gap: 6px; justify-content: center; margin-top: 24px; }
.osk-page-num {
	display: inline-flex; align-items: center; justify-content: center;
	min-width: 36px; height: 36px; padding: 0 8px;
	border: 1px solid var(--osk-border-strong); border-radius: var(--osk-radius-sm);
	background: var(--osk-surface);
	font-size: 14px; font-weight: 600; color: var(--osk-text);
	transition: border-color 0.15s ease, background 0.15s ease;
}
.osk-page-num:hover { border-color: var(--osk-accent); text-decoration: none; }
.osk-page-num.is-current { background: var(--osk-accent); border-color: var(--osk-accent); color: #fff; }

/* ---------- 確認モーダル ---------- */
.osk-modal-overlay {
	position: fixed; inset: 0; z-index: 100;
	background: rgba(16, 24, 40, 0.5);
	display: flex; align-items: center; justify-content: center;
	padding: 24px;
	animation: osk-fade-in 0.15s ease;
}
@keyframes osk-fade-in { from { opacity: 0; } to { opacity: 1; } }
.osk-modal {
	background: var(--osk-surface);
	border: 1px solid var(--osk-border-strong);
	border-radius: var(--osk-radius);
	box-shadow: var(--osk-shadow-lg);
	max-width: 440px; width: 100%;
	padding: 24px;
	animation: osk-pop-in 0.18s ease;
}
@keyframes osk-pop-in {
	from { opacity: 0; transform: scale(0.96); }
	to { opacity: 1; transform: scale(1); }
}
.osk-modal-message { font-size: 14.5px; margin-bottom: 20px; white-space: pre-wrap; }
.osk-modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ---------- レスポンシブ ---------- */
@media (max-width: 960px) {
	.osk-main { padding: 20px 16px 48px; }
	.osk-topbar { padding: 12px 16px; }

	/* サイドバーをオフキャンバスに */
	.osk-sidebar {
		position: fixed; left: 0; top: 0; z-index: 60;
		transform: translateX(-100%);
		transition: transform 0.22s ease;
		box-shadow: var(--osk-shadow-lg);
	}
	.osk-sidebar.is-open { transform: translateX(0); }
	.osk-sidebar-overlay {
		position: fixed; inset: 0; z-index: 50;
		background: rgba(16, 24, 40, 0.4);
	}
	.osk-menu-toggle {
		display: flex; flex-direction: column; gap: 4px;
		background: none; border: none; cursor: pointer; padding: 6px;
	}
	.osk-menu-toggle span {
		display: block; width: 20px; height: 2px;
		background: var(--osk-text); border-radius: 2px;
	}

	.osk-field-row { grid-template-columns: 1fr; }
	.osk-help-grid { grid-template-columns: 1fr; }
	.osk-thread-card-link { flex-direction: column; gap: 10px; }
	.osk-thread-card-meta { flex-direction: row; flex-wrap: wrap; align-items: center; text-align: left; }
	.osk-detail-row { grid-template-columns: 1fr; gap: 2px; }

	/* テーブルをカード状に */
	.osk-table-wrap { border: none; background: transparent; }
	.osk-table thead { display: none; }
	.osk-table, .osk-table tbody, .osk-table tr, .osk-table td { display: block; width: 100%; }
	.osk-table tr {
		border: 1px solid var(--osk-border-strong);
		border-radius: var(--osk-radius-sm);
		background: var(--osk-surface);
		box-shadow: var(--osk-shadow);
		margin-bottom: 12px; padding: 8px 0;
	}
	.osk-table td { border: none; padding: 6px 14px; }
	.osk-table td[data-label]::before {
		content: attr(data-label);
		display: block;
		font-size: 11.5px; color: var(--osk-text-muted); font-weight: 600;
	}
	.osk-table td[data-label=""]::before { display: none; }
	.osk-help-table td:first-child { white-space: normal; }
}

@media (max-width: 480px) {
	.osk-auth-card { padding: 28px 20px; }
	.osk-filter-selects { flex-direction: column; align-items: stretch; }
	.osk-filter-selects .osk-select { width: 100%; }
	.osk-form-actions { flex-direction: column; align-items: stretch; }
}