/* 基础样式:布局与组件(颜色变量由主题文件覆盖) */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --bg: #f0f4f8; --card: #fff; --text: #1e293b; --muted: #64748b;
    --primary: #2563eb; --primary-dark: #1d4ed8; --ok: #16a34a; --warn: #d97706; --err: #dc2626;
    --border: #e2e8f0; --radius: 12px; --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.05);
    --nav-bg: #fff;
}
body { font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--primary); text-decoration: none; }

/* 顶栏 */
.navbar { background: var(--nav-bg); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; box-shadow: var(--shadow); }
.navbar-inner { max-width: 1180px; margin: 0 auto; padding: 0 20px; height: 60px; display: flex; align-items: center; gap: 22px; }
.brand { font-size: 18px; font-weight: 700; color: var(--text); white-space: nowrap; }
.nav-links { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.nav-links a { color: var(--muted); padding: 8px 13px; border-radius: 8px; font-size: 14px; white-space: nowrap; transition: .15s; }
.nav-links a:hover { color: var(--text); background: var(--bg); }
.nav-links a.active { color: var(--primary); background: var(--bg); font-weight: 600; }
.nav-user { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.nav-hi { color: var(--muted); font-size: 14px; }

/* 容器与卡片 */
.container { max-width: 1180px; width: 100%; margin: 0 auto; padding: 24px 20px 40px; flex: 1; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin-bottom: 20px; box-shadow: var(--shadow); }
.card h3 { font-size: 16px; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.card-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.card-head h3 { margin-bottom: 0; }
.grid { display: grid; gap: 20px; margin-bottom: 20px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px) { .grid-2, .grid-4 { grid-template-columns: 1fr 1fr; } .navbar-inner { padding: 0 12px; gap: 10px; } .container { padding: 14px 12px 30px; } .card { padding: 16px; } }
@media (max-width: 540px) { .grid-2, .grid-4 { grid-template-columns: 1fr; } .nav-hi { display: none; } }

/* 统计卡 */
.stat { text-align: center; padding: 26px 12px; }
.stat .num { font-size: 30px; font-weight: 800; margin-bottom: 6px; }
.stat .lbl { color: var(--muted); font-size: 13px; }

/* Hero */
.hero { text-align: center; padding: 46px 16px 34px; }
.hero h1 { font-size: 32px; margin-bottom: 12px; }
.hero p { color: var(--muted); font-size: 15px; max-width: 560px; margin: 0 auto; line-height: 1.7; }
@media (max-width: 540px) { .hero h1 { font-size: 24px; } }

/* 表单 */
label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 6px; }
input, select, textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; background: var(--card); color: var(--text); transition: .15s; font-family: inherit; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent); }
textarea { resize: vertical; line-height: 1.6; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }
.mono { font-family: Consolas, monospace; font-size: 13px; }

/* 按钮 */
.btn { display: inline-block; padding: 10px 20px; border-radius: 8px; border: 1px solid transparent; font-size: 14px; cursor: pointer; background: var(--bg); color: var(--text); transition: .15s; font-family: inherit; text-align: center; }
.btn:hover { filter: brightness(.96); transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); filter: none; }
.btn-ghost { border-color: var(--border); background: var(--card); }
.btn-danger { background: var(--err); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: 5px 10px; font-size: 12.5px; border-radius: 6px; }

/* 表格 */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; padding: 10px 10px; color: var(--muted); font-size: 12.5px; font-weight: 600; border-bottom: 2px solid var(--border); white-space: nowrap; }
td { padding: 11px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: color-mix(in srgb, var(--primary) 4%, transparent); }
.ops { white-space: nowrap; }
.ops form { margin-right: 4px; }
.days-input { width: 64px; display: inline-block; padding: 5px 6px; margin-right: 4px; }

/* 徽章 */
.badge { display: inline-block; padding: 2.5px 9px; border-radius: 99px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.badge-ok { background: color-mix(in srgb, var(--ok) 14%, transparent); color: var(--ok); }
.badge-warn { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }
.badge-err { background: color-mix(in srgb, var(--err) 14%, transparent); color: var(--err); }

/* 闪存提示 */
.flash { padding: 12px 16px; border-radius: 10px; margin-bottom: 18px; font-size: 14px; border: 1px solid; }
.flash-ok { background: color-mix(in srgb, var(--ok) 10%, transparent); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 30%, transparent); }
.flash-err { background: color-mix(in srgb, var(--err) 10%, transparent); color: var(--err); border-color: color-mix(in srgb, var(--err) 30%, transparent); }

/* 公告 */
.ann-item { padding: 12px 0; border-bottom: 1px dashed var(--border); }
.ann-item:last-child { border-bottom: none; }
.ann-title { font-weight: 700; margin-bottom: 5px; }
.ann-body { color: var(--muted); font-size: 13.5px; line-height: 1.7; }

/* 其他 */
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.guide { padding-left: 20px; line-height: 2; color: var(--muted); font-size: 14px; }
.guide b { color: var(--text); }
.tag-code { font-family: Consolas, monospace; letter-spacing: .5px; }
.footer { text-align: center; color: var(--muted); font-size: 12.5px; padding: 20px; border-top: 1px solid var(--border); }
.filter-form { margin-bottom: 4px; }

/* 主题选择器 */
.theme-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 16px; }
.theme-item { display: block; cursor: pointer; text-align: center; position: relative; }
.theme-item input { position: absolute; opacity: 0; }
.theme-prev { height: 84px; border-radius: 10px; border: 2px solid var(--border); transition: .15s; margin-bottom: 8px; }
.theme-item input:checked + .theme-prev { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 25%, transparent); }
.theme-name { font-size: 13px; margin-bottom: 4px; }

/* 扫码登录 */
.qr-wrap { margin-top: 8px; }
#qrBox { margin-top: 14px; text-align: center; padding: 16px; border: 1px dashed var(--border); border-radius: 10px; background: var(--bg); }
#qrBox img { border-radius: 8px; background: #fff; padding: 8px; }
#qrStatus { margin-top: 10px; font-size: 13px; }

/* 主题预览色块(全部内置,不随当前主题加载) */
.prev-blue   { background: linear-gradient(135deg, #dbeafe 0%, #93c5fd 50%, #2563eb 100%); }
.prev-dark   { background: linear-gradient(135deg, #1a1f29 0%, #2a3140 50%, #3b82f6 100%); }
.prev-sakura { background: linear-gradient(135deg, #fce7f3 0%, #f9a8d4 50%, #ec4899 100%); }
.prev-mint   { background: linear-gradient(135deg, #d1fae5 0%, #6ee7b7 50%, #059669 100%); }
.prev-violet { background: linear-gradient(135deg, #ede9fe 0%, #c4b5fd 50%, #7c3aed 100%); }