/* ==========================================================
   后台通用样式
   ========================================================== */
:root {
    --bg: #f4f6f9;
    --panel: #fff;
    --line: #e6eaf0;
    --text: #1f2733;
    --dim: #7a869a;
    --brand: #8b1f35;
    --brand2: #b03a52;
    --ok: #1a9c5b;
    --warn: #d97706;
    --danger: #d64545;
    --radius: 10px;
}
* { box-sizing: border-box; }
body {
    margin: 0; background: var(--bg); color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    font-size: 14px; -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 布局 */
.wrap { max-width: 1240px; margin: 0 auto; padding: 18px 16px 60px; }
.topbar {
    background: var(--brand); color: #fff;
    padding: 0 20px; height: 54px;
    display: flex; align-items: center; gap: 20px;
    position: sticky; top: 0; z-index: 30;
    box-shadow: 0 2px 10px rgba(0, 0, 0, .12);
}
.topbar .logo { font-weight: 700; font-size: 16px; letter-spacing: 1px; }
.topbar nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.topbar nav a {
    color: rgba(255, 255, 255, .85); padding: 7px 12px; border-radius: 8px;
    font-size: 13px; white-space: nowrap;
}
.topbar nav a:hover { background: rgba(255, 255, 255, .12); text-decoration: none; }
.topbar nav a.on { background: rgba(255, 255, 255, .2); color: #fff; font-weight: 600; }
.topbar .right { display: flex; align-items: center; gap: 12px; font-size: 13px; }
.topbar .right a { color: rgba(255, 255, 255, .85); }

/* 卡片 */
.panel {
    background: var(--panel); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 18px; margin-bottom: 16px;
}
.panel > h2 {
    margin: -18px -18px 16px; padding: 14px 18px;
    font-size: 15px; border-bottom: 1px solid var(--line);
    display: flex; align-items: center; gap: 10px;
}
.panel > h2 .spacer { flex: 1; }

/* 统计卡 */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat {
    background: var(--panel); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 16px;
}
.stat .n { font-size: 26px; font-weight: 700; color: var(--brand); }
.stat .l { font-size: 12px; color: var(--dim); margin-top: 4px; }

/* 表单 */
.field { margin-bottom: 14px; }
.field > label { display: block; font-size: 13px; color: var(--dim); margin-bottom: 6px; }
.field > label b { color: var(--text); }
input[type=text], input[type=number], input[type=password], input[type=search], select, textarea {
    width: 100%; padding: 9px 11px; border: 1px solid var(--line);
    border-radius: 8px; font-size: 14px; background: #fff; color: var(--text);
    outline: none; font-family: inherit;
}
input:focus, select:focus, textarea:focus { border-color: var(--brand2); }
textarea { min-height: 80px; resize: vertical; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 760px) { .grid2, .grid3, .grid4 { grid-template-columns: 1fr; } }

/* 按钮 */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 15px; border-radius: 8px; border: 1px solid var(--line);
    background: #fff; color: var(--text); font-size: 13px; cursor: pointer;
    font-family: inherit; white-space: nowrap;
}
.btn:hover { background: #f7f8fa; text-decoration: none; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand2); }
.btn.danger { background: #fff; border-color: #f0c2c2; color: var(--danger); }
.btn.danger:hover { background: #fdf2f2; }
.btn.sm { padding: 4px 10px; font-size: 12px; border-radius: 6px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* 表格 */
table.list { width: 100%; border-collapse: collapse; font-size: 13px; }
table.list th, table.list td { padding: 10px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
table.list th { font-size: 12px; color: var(--dim); font-weight: 600; background: #fafbfc; }
table.list tr:hover td { background: #fafbfc; }
table.list td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.list td.acts { white-space: nowrap; text-align: right; }
.off { opacity: .45; }

/* 标签 */
.badge {
    display: inline-block; padding: 2px 8px; border-radius: 999px;
    font-size: 11px; font-weight: 600;
}
.badge.on { background: #e3f6ec; color: var(--ok); }
.badge.off { background: #f2f4f7; color: var(--dim); }
.badge.warn { background: #fdf2e0; color: var(--warn); }
.badge.brand { background: #fbe9ee; color: var(--brand); }

/* 提示 */
.flashes { margin-bottom: 14px; }
.flash {
    padding: 10px 14px; border-radius: 8px; margin-bottom: 8px; font-size: 13px;
    border: 1px solid;
}
.flash.ok { background: #e9f8f0; border-color: #bfe8d3; color: #14663c; }
.flash.err { background: #fdeeee; border-color: #f3c9c9; color: #a52a2a; }

/* 规格编辑块 */
.vblock {
    border: 1px solid var(--line); border-radius: 10px;
    margin-bottom: 12px; overflow: hidden; background: #fff;
}
.vblock > .vh {
    background: #fafbfc; padding: 9px 12px; border-bottom: 1px solid var(--line);
    display: flex; align-items: center; gap: 10px; font-size: 13px;
}
.vblock > .vh .t { font-weight: 600; }
.vblock > .vh .spacer { flex: 1; }
.vblock > .vb { padding: 12px; }
.ptable { width: 100%; border-collapse: collapse; font-size: 13px; }
.ptable th { font-size: 11px; color: var(--dim); text-align: left; padding: 4px 6px; font-weight: 600; }
.ptable td { padding: 3px 6px; }
.ptable input, .ptable select { padding: 6px 8px; font-size: 13px; }
.ptable td.n { width: 90px; }
.ptable td.m { width: 110px; }
.ptable td.x { width: 36px; }
.hint { font-size: 12px; color: var(--dim); margin-top: 8px; line-height: 1.7; }
.price-preview {
    font-weight: 700; color: var(--brand); font-variant-numeric: tabular-nums;
    font-size: 15px; min-width: 60px; display: inline-block;
}

/* 登录页 */
.login-page {
    min-height: 100vh; display: grid; place-items: center;
    background: linear-gradient(160deg, #6d1729, #3d0a15);
}
.login-box {
    width: 100%; max-width: 360px; background: #fff;
    border-radius: 14px; padding: 30px 26px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
}
.login-box h1 { margin: 0 0 4px; font-size: 20px; }
.login-box .sub { color: var(--dim); font-size: 13px; margin-bottom: 22px; }

/* 内联表单 */
.inline-form { display: inline; }
.cat-row {
    display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
    padding: 12px; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 10px;
}
.cat-row input.name { flex: 1; min-width: 140px; }
.cat-row input.icon { width: 70px; text-align: center; }
.cat-row input.so { width: 80px; }
.cat-row input.sub { flex: 1; min-width: 160px; }

/* 移动端 */
@media (max-width: 700px) {
    .topbar { height: auto; padding: 10px 14px; flex-wrap: wrap; gap: 10px; }
    .topbar nav { order: 3; width: 100%; }
    .wrap { padding: 14px 10px 50px; }
    .panel { padding: 14px; }
    .panel > h2 { margin: -14px -14px 14px; padding: 12px 14px; }
    table.list { font-size: 12px; }
    table.list th, table.list td { padding: 8px 6px; }
}

/* 隐藏 */
.hide { display: none !important; }

/* 拖拽排序 */
.drag-handle { cursor: grab; color: var(--dim); user-select: none; }
tr.dragging { opacity: .4; }
tr.drop-target td { box-shadow: inset 0 2px 0 var(--brand2); }