:root {
	--primary-color: #0066FF;
	--bg-color: #F8F9FA;
	--text-color: #212529;
	--card-bg: #FFFFFF;
	--border-color: #E0E0E0;
	--muted: #6c757d;
	--danger: #d9534f;
	--shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.theme-dark {
	--bg-color: #121212;
	--text-color: #E0E0E0;
	--card-bg: #1E1E1E;
	--border-color: #333333;
	--shadow: 0 8px 24px rgba(0,0,0,0.4);
}
* { box-sizing: border-box; }
html, body {
	margin: 0;
	padding: 0;
	font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
	background: var(--bg-color);
	color: var(--text-color);
	min-height: 100vh;
}
a { color: var(--primary-color); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 16px; }

.app-header {
	position: sticky; top: 0; z-index: 20;
	background: var(--card-bg);
	border-bottom: 1px solid var(--border-color);
}
.app-header .container {
	display: flex; align-items: center; gap: 16px; height: 60px;
}
.brand { font-weight: 700; }
.brand-link { color: inherit; text-decoration: none; }
.nav-desktop { display: none; gap: 12px; }
.nav-desktop .nav-link { padding: 6px 8px; border-radius: 8px; }
.nav-desktop .nav-link.active, .nav-desktop .nav-link:hover {
	background: rgba(0,0,0,0.05);
}
.hamburger { margin-left: auto; background: transparent; border: 0; font-size: 20px; cursor: pointer; }
.right-actions { display: none; gap: 8px; }
.nav-mobile { display: none; border-top: 1px solid var(--border-color); padding: 8px 16px; }
.nav-mobile .nav-link { display: block; padding: 8px 0; }

.mobile-action-group {
	display: flex;
	flex-direction: column;
	gap: 10px;
	margin-top: 12px;
	padding-top: 12px;
	border-top: 1px solid var(--border-color);
}
.mobile-action-group .btn {
	width: 100%;
	justify-content: center;
}
.mobile-action-group .btn.primary {
	background: var(--primary-color);
	border-color: var(--primary-color);
	color: #fff;
}

@media (min-width: 900px) {
	.nav-desktop { display: inline-flex; }
	.hamburger { display: none; }
	.right-actions { display: inline-flex; margin-left: auto; }
}

.btn {
	border: 1px solid var(--border-color);
	background: var(--card-bg);
	color: var(--text-color);
	padding: 8px 12px;
	border-radius: 10px;
	cursor: pointer;
	transition: transform .12s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn.primary {
	background: var(--primary-color);
	border-color: var(--primary-color);
	color: #fff;
}
.btn.ghost {
	background: transparent;
}
.btn.icon { width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; }

.content { padding: 24px 0 48px; }
.section-title { margin: 12px 0 16px; font-size: 1.25rem; }
.card-grid {
	display: grid; grid-template-columns: 1fr; gap: 16px;
}
@media (min-width: 640px) {
	.card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
	.card-grid { grid-template-columns: repeat(3, 1fr); }
}
.card {
	display: grid; grid-template-columns: 72px 1fr auto; align-items: center;
	background: var(--card-bg);
	border: 1px solid var(--border-color);
	border-radius: 14px;
	padding: 16px;
	box-shadow: var(--shadow);
	transition: transform .12s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,0,0,0.12); }
.card .icon { font-size: 40px; display: flex; align-items: center; justify-content: center; }
.card .meta { padding: 0 12px; }
.card .title { font-weight: 600; margin-bottom: 6px; }
.card .sub { display: flex; gap: 8px; align-items: center; margin-bottom: 6px; }
.chip {
	display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 999px;
	border: 1px solid var(--border-color); font-size: .8rem;
}
.short { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; }
.expire { font-size: .9rem; color: var(--muted); }
.expire.danger { color: var(--danger); }
.dot { margin: 0 6px; color: var(--border-color); }
.ops { display: flex; align-items: center; gap: 8px; }
.muted { color: var(--muted); }
.empty {
	text-align: center; padding: 32px; border: 1px dashed var(--border-color); border-radius: 12px; color: var(--muted);
}
.card.expired { text-decoration: line-through; opacity: .7; }

.pagination { display: flex; gap: 8px; align-items: center; justify-content: center; margin-top: 16px; }
.page { padding: 6px 10px; border: 1px solid var(--border-color); border-radius: 10px; background: var(--card-bg); }
.page.current { border-style: dashed; }

.app-footer { border-top: 1px solid var(--border-color); padding: 16px 0; margin-top: 24px; color: var(--muted); }

/* 上传面板 */
.upload-panel {
	position: fixed; inset: 0; background: rgba(0,0,0,0.36);
	display: grid; place-items: center;
}
.upload-panel[hidden] { display: none !important; }
.upload-card {
	width: min(880px, 92vw); background: var(--card-bg); border: 1px solid var(--border-color);
	border-radius: 16px; box-shadow: var(--shadow); padding: 16px;
}
.upload-head { display: flex; align-items: center; justify-content: space-between; padding: 8px 4px; }
.upload-form .field { display: grid; gap: 6px; margin-bottom: 12px; }
.upload-form input[type="text"], .upload-form input[type="file"], .upload-form select, .upload-form textarea {
	width: 100%; padding: 10px 12px; border: 1px solid var(--border-color); background: var(--card-bg); color: var(--text-color);
	border-radius: 10px; outline: none;
}
.upload-form textarea { resize: vertical; }
.grid2 { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 900px) { .grid2 { grid-template-columns: 1fr 1fr; } }
.actions { display: flex; align-items: center; gap: 12px; }
.progress { flex: 1; height: 10px; background: rgba(0,0,0,0.06); border-radius: 999px; overflow: hidden; border: 1px solid var(--border-color); }
.bar {
	height: 100%; width: 0%; background: linear-gradient(90deg, #66a3ff, var(--primary-color));
	transition: width .12s linear, transform .12s ease;
}

/* 详情页 */
.card.detail { grid-template-columns: 72px 1fr auto; align-items: start; }
.text-content {
	margin-top: 10px; padding: 12px; border-radius: 10px; background: rgba(0,0,0,0.04); border: 1px dashed var(--border-color);
	white-space: pre-wrap; word-break: break-word;
}
.link-content a { font-weight: 600; }
.image-preview { margin-top: 10px; border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden; }
.image-preview img { display: block; max-width: 100%; height: auto; }