/* WP Link Navigator v2.0 - Frontend CSS */
.wpln-wrap {
	--wpln-primary: #2563eb;
	--wpln-primary-soft: rgba(37,99,235,0.1);
	--wpln-bg: #f8fafc;
	--wpln-card-bg: #ffffff;
	--wpln-text: #1e293b;
	--wpln-text-muted: #64748b;
	--wpln-border: #e2e8f0;
	--wpln-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
	--wpln-radius: 14px;
	--wpln-gap: 14px;
	--wpln-max-w: 1280px;
	--wpln-fav-size: 38px;
	--wpln-sidebar-w: 220px;
	max-width: var(--wpln-max-w);
	margin: 0 auto;
	padding: 24px 20px 64px;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	color: var(--wpln-text);
	background: var(--wpln-bg);
}

/* Hero */
.wpln-hero { text-align: center; margin-bottom: 32px; }
.wpln-title { font-size: 32px; font-weight: 700; margin: 0 0 8px; color: var(--wpln-text); }
.wpln-subtitle { font-size: 15px; color: var(--wpln-text-muted); margin: 0 0 20px; }

/* Search */
.wpln-search-box { position: relative; max-width: 560px; margin: 0 auto; }
.wpln-search-icon { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; color: var(--wpln-text-muted); pointer-events: none; z-index: 1; }
.wpln-search-input {
	width: 100%; padding: 13px 48px 13px 46px; font-size: 15px;
	border: 1px solid var(--wpln-border); border-radius: 999px;
	background: var(--wpln-card-bg); box-shadow: var(--wpln-shadow);
	outline: none; transition: border-color .2s, box-shadow .2s; color: var(--wpln-text);
}
.wpln-search-input:focus { border-color: var(--wpln-primary); box-shadow: 0 0 0 4px var(--wpln-primary-soft); }
.wpln-search-kbd { position: absolute; right: 18px; top: 50%; transform: translateY(-50%); font-size: 12px; color: var(--wpln-text-muted); background: var(--wpln-bg); border: 1px solid var(--wpln-border); border-radius: 6px; padding: 2px 8px; font-family: inherit; pointer-events: none; }
.wpln-search-clear { position: absolute; right: 44px; top: 50%; transform: translateY(-50%); width: 22px; height: 22px; border: none; border-radius: 50%; background: var(--wpln-text-muted); color: #fff; font-size: 14px; line-height: 1; cursor: pointer; padding: 0; display: flex; align-items: center; justify-content: center; }
.wpln-search-clear:hover { opacity: 0.8; }

/* Body layout */
.wpln-body { display: flex; gap: 28px; align-items: flex-start; }
.wpln-sidebar { flex: 0 0 var(--wpln-sidebar-w); position: sticky; top: 24px; max-height: calc(100vh - 48px); overflow-y: auto; overflow-x: hidden; scrollbar-width: thin; scrollbar-color: var(--wpln-border) transparent; }
.wpln-sidebar::-webkit-scrollbar { width: 4px; }
.wpln-sidebar::-webkit-scrollbar-thumb { background: var(--wpln-border); border-radius: 4px; }
.wpln-main { flex: 1; min-width: 0; }

/* 大屏（>=1800px）：侧边栏固定悬浮在主内容区左侧外缘，向下避开 hero，锚定主内容区左边缘 */
@media (min-width: 1800px) {
	.wpln-layout-sidebar .wpln-body { position: relative; }
	.wpln-layout-sidebar .wpln-sidebar {
		position: fixed;
		left: calc((100vw - var(--wpln-max-w)) / 2 - var(--wpln-sidebar-w) - 20px);
		top: 120px;
		width: var(--wpln-sidebar-w);
		max-height: calc(100vh - 144px);
		flex: none;
		z-index: 50;
	}
	.wpln-layout-sidebar .wpln-main { width: 100%; }
}

/* Sidebar nav */
.wpln-cats-nav { display: flex; flex-direction: column; gap: 4px; padding: 12px; background: var(--wpln-card-bg); border: 1px solid var(--wpln-border); border-radius: var(--wpln-radius); box-shadow: 0 4px 16px rgba(0,0,0,0.06), var(--wpln-shadow); }
.wpln-cat-link { display: flex; align-items: center; gap: 8px; padding: 9px 12px; font-size: 14px; color: var(--wpln-text); border-radius: 8px; text-decoration: none; transition: background .15s, color .15s; }
.wpln-cat-link:hover { background: var(--wpln-primary-soft); color: var(--wpln-primary); }
.wpln-cat-link.active { background: var(--wpln-primary-soft); color: var(--wpln-primary); font-weight: 600; }
.wpln-cat-icon { font-size: 13px; opacity: 0.7; }
.wpln-cat-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.wpln-cat-count { font-size: 11px; color: var(--wpln-text-muted); background: var(--wpln-bg); border-radius: 999px; padding: 1px 7px; min-width: 20px; text-align: center; }
.wpln-cat-link.active .wpln-cat-count { background: var(--wpln-primary); color: #fff; }

/* Sections */
.wpln-section { margin-bottom: 36px; }
.wpln-section-head { margin-bottom: 14px; }
.wpln-section-title { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; margin: 0 0 4px; color: var(--wpln-text); }
.wpln-section-bar { display: inline-block; width: 4px; height: 20px; background: var(--wpln-primary); border-radius: 2px; }
.wpln-section-bar--featured { background: #f59e0b; }

/* 精选推荐区：金色渐变容器，与普通分类区明显区分 */
.wpln-featured {
	background: linear-gradient(135deg, rgba(245,158,11,0.08) 0%, rgba(245,158,11,0.03) 100%);
	border: 1px solid rgba(245,158,11,0.25);
	border-radius: calc(var(--wpln-radius) + 6px);
	padding: 20px 20px 8px;
	margin-bottom: 36px;
}
.wpln-featured .wpln-section-head {
	display: flex; align-items: center; gap: 10px; margin-bottom: 14px;
	padding-bottom: 10px; border-bottom: 1px dashed rgba(245,158,11,0.3);
}
.wpln-featured .wpln-section-title { color: #b45309; }
.wpln-featured .wpln-section-bar--featured {
	width: 6px; height: 22px; border-radius: 3px;
	background: linear-gradient(180deg, #fbbf24, #f59e0b);
	box-shadow: 0 0 12px rgba(245,158,11,0.4);
}
.wpln-featured-badge {
	display: inline-flex; align-items: center; gap: 4px;
	background: linear-gradient(135deg, #fbbf24, #f59e0b);
	color: #fff; font-size: 11px; font-weight: 600;
	padding: 2px 10px; border-radius: 999px;
	letter-spacing: 0.5px;
	box-shadow: 0 2px 8px rgba(245,158,11,0.35);
}
.wpln-featured .wpln-card { border-color: rgba(245,158,11,0.2); }
.wpln-featured .wpln-card:hover { border-color: #f59e0b; box-shadow: 0 8px 24px rgba(245,158,11,0.15); }
.wpln-section-count { font-size: 12px; font-weight: 400; color: var(--wpln-text-muted); background: var(--wpln-bg); padding: 2px 8px; border-radius: 999px; }
.wpln-section-desc { font-size: 13px; color: var(--wpln-text-muted); margin: 0; }

/* Grid */
.wpln-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--wpln-gap); }
.wpln-cols-2 .wpln-grid { grid-template-columns: repeat(2, 1fr); }
.wpln-cols-3 .wpln-grid { grid-template-columns: repeat(3, 1fr); }
.wpln-cols-4 .wpln-grid { grid-template-columns: repeat(4, 1fr); }

/* Card */
.wpln-card {
	position: relative; display: flex; align-items: flex-start; gap: 12px;
	padding: 14px 16px; background: var(--wpln-card-bg);
	border: 1px solid var(--wpln-border); border-radius: var(--wpln-radius);
	box-shadow: var(--wpln-shadow); text-decoration: none; color: var(--wpln-text);
	transition: transform .15s, box-shadow .15s, border-color .15s; overflow: hidden;
}
.wpln-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); border-color: var(--wpln-primary); }
.wpln-favicon { width: var(--wpln-fav-size); height: var(--wpln-fav-size); border-radius: 8px; flex-shrink: 0; object-fit: cover; background: var(--wpln-bg); }
.wpln-favicon-placeholder { display: flex; align-items: center; justify-content: center; font-size: 16px; color: var(--wpln-text-muted); }
.wpln-card-body { flex: 1; min-width: 0; }
.wpln-card-name { display: block; font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 2px; }
.wpln-card-desc { display: block; font-size: 12px; color: var(--wpln-text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.wpln-card-url { position: absolute; bottom: 6px; right: 10px; font-size: 10px; color: var(--wpln-text-muted); opacity: 0; transition: opacity .15s; }
.wpln-card:hover .wpln-card-url { opacity: 1; }
.wpln-card.wpln-hidden { display: none; }
.wpln-section.wpln-hidden { display: none; }

/* Tooltip */
.wpln-tip {
	position: absolute; bottom: calc(100% + 10px); left: 50%; transform: translateX(-50%) translateY(4px);
	background: #111827; color: #fff; padding: 12px 14px; border-radius: 10px;
	font-size: 13px; max-width: 280px; opacity: 0; pointer-events: none;
	transition: opacity .2s, transform .2s; z-index: 10; box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.wpln-tip::after { content: ''; position: absolute; top: 100%; left: 50%; transform: translateX(-50%); border: 6px solid transparent; border-top-color: #111827; }
.wpln-card:hover .wpln-tip, .wpln-card:focus-within .wpln-tip { opacity: 1; transform: translateX(-50%) translateY(0); }
.wpln-tip-name { display: block; font-weight: 600; font-size: 13px; color: #fff; margin-bottom: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.wpln-tip-url { display: block; color: #93c5fd; word-break: break-all; margin-bottom: 4px; font-size: 11px; }
.wpln-tip-desc { display: block; color: #d1d5db; font-size: 12px; }
.wpln-tip-meta { display: flex; align-items: center; gap: 8px; margin-top: 6px; padding-top: 6px; border-top: 1px solid rgba(255,255,255,0.12); }
.wpln-tip-cat { display: inline-block; padding: 1px 8px; border-radius: 10px; background: rgba(37,99,235,0.25); color: #bfdbfe; font-size: 11px; }
.wpln-tip-rating { color: #fbbf24; font-size: 11px; letter-spacing: 1px; }

/* Empty / no result */
.wpln-empty, .wpln-no-result { text-align: center; padding: 48px 20px; color: var(--wpln-text-muted); font-size: 15px; }

/* Backtop / dark toggle */
.wpln-backtop, .wpln-darktoggle {
	position: fixed; right: 24px; width: 40px; height: 40px; border-radius: 50%;
	border: 1px solid var(--wpln-border); background: var(--wpln-card-bg);
	box-shadow: var(--wpln-shadow); cursor: pointer; font-size: 16px;
	display: flex; align-items: center; justify-content: center; z-index: 999;
	transition: transform .15s, box-shadow .15s;
}
.wpln-backtop:hover, .wpln-darktoggle:hover { transform: translateY(-2px); }
.wpln-backtop { bottom: 24px; }
.wpln-darktoggle { bottom: 76px; }

/* Credit */
.wpln-credit { text-align: center; margin-top: 48px; font-size: 12px; color: var(--wpln-text-muted); }
.wpln-credit a { color: var(--wpln-text-muted); text-decoration: none; }

/* Dark mode */
.wpln-wrap.wpln-dm-dark { --wpln-bg: #0f172a; --wpln-card-bg: #1e293b; --wpln-text: #e2e8f0; --wpln-text-muted: #94a3b8; --wpln-border: #334155; --wpln-shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.3); }
@media (prefers-color-scheme: dark) {
	.wpln-wrap.wpln-dm-auto { --wpln-bg: #0f172a; --wpln-card-bg: #1e293b; --wpln-text: #e2e8f0; --wpln-text-muted: #94a3b8; --wpln-border: #334155; --wpln-shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.3); }
}

/* Top layout */
.wpln-layout-top .wpln-body { flex-direction: column; }
.wpln-layout-top .wpln-sidebar { position: static; max-height: none; width: 100%; flex: none; }
.wpln-layout-top .wpln-cats-nav { flex-direction: row; flex-wrap: wrap; overflow: visible; }
.wpln-layout-top .wpln-cat-link { flex: 0 0 auto; }

/* Responsive */
@media (max-width: 1024px) {
	.wpln-body { flex-direction: column; }
	.wpln-sidebar { flex: none; position: static; max-height: none; width: 100%; margin-bottom: 16px; }
	.wpln-cats-nav { flex-direction: row; flex-wrap: nowrap; overflow-x: auto; overflow-y: hidden; gap: 8px; padding: 10px; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
	.wpln-cats-nav::-webkit-scrollbar { display: none; }
	.wpln-cat-link { flex: 0 0 auto; white-space: nowrap; padding: 7px 14px; font-size: 13px; }
	.wpln-cat-count { display: none; }
	.wpln-cols-3 .wpln-grid, .wpln-cols-4 .wpln-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
	.wpln-wrap { padding: 16px 10px 48px; }
	.wpln-grid, .wpln-cols-2 .wpln-grid, .wpln-cols-3 .wpln-grid, .wpln-cols-4 .wpln-grid { grid-template-columns: 1fr; gap: 10px; }
	.wpln-title { font-size: 22px; }
	.wpln-subtitle { font-size: 13px; }
	.wpln-card { padding: 12px 14px; }
	.wpln-card-name { font-size: 14px; }
	.wpln-card-desc { font-size: 12px; }
	.wpln-favicon { width: 32px !important; height: 32px !important; }
	.wpln-search-input { padding: 11px 44px 11px 42px; font-size: 14px; }
	.wpln-search-icon { left: 14px; width: 16px; height: 16px; }
	.wpln-tip { left: 12px; right: 12px; transform: translateY(4px); max-width: none; }
	.wpln-card:hover .wpln-tip { transform: translateY(0); }
	.wpln-tip::after { display: none; }
}