* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; background: #f4f6fa; color: #1f2937; font-size: 14px; }
a { color: #2563eb; text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: Consolas, Monaco, monospace; background: #f1f5f9; padding: 2px 6px; border-radius: 5px; font-size: 13px; color: #0f172a; }
code.wrap { display: inline-block; word-break: break-all; white-space: normal; }

/* layout */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #111827; color: #cbd5e1; display: flex; flex-direction: column; padding: 20px 0; flex-shrink: 0; }
.sidebar .brand { font-size: 18px; font-weight: 700; color: #fff; padding: 0 22px 20px; border-bottom: 1px solid #1f2937; }
.sidebar nav { display: flex; flex-direction: column; padding: 14px 0; flex: 1; }
.sidebar nav a { color: #cbd5e1; padding: 12px 22px; font-size: 14px; }
.sidebar nav a:hover { background: #1f2937; text-decoration: none; color: #fff; }
.sidebar nav a.active { background: #2563eb; color: #fff; }
.sidebar .logout { margin: 0 16px; text-align: center; padding: 10px; border: 1px solid #334155; border-radius: 8px; color: #94a3b8; }
.sidebar .logout:hover { background: #1f2937; text-decoration: none; }
.content { flex: 1; padding: 26px 32px; max-width: 1200px; }

.page-head { margin-bottom: 18px; }
.page-head h2 { font-size: 22px; color: #0f172a; }
.page-head .desc { color: #64748b; margin-top: 6px; font-size: 13px; }

/* cards */
.card { background: #fff; border-radius: 12px; padding: 22px; box-shadow: 0 2px 10px rgba(15, 23, 42, .06); margin-bottom: 20px; }
.card h3 { font-size: 16px; margin-bottom: 16px; color: #0f172a; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
@media (max-width: 900px) { .grid2 { grid-template-columns: 1fr; } .sidebar { width: 170px; } .content { padding: 18px; } }

.toolbar { margin-bottom: 16px; }
.empty { text-align: center; color: #94a3b8; padding: 40px; }
.empty.small { padding: 24px; }

/* flash */
.flash { padding: 12px 16px; border-radius: 10px; margin-bottom: 16px; font-size: 14px; }
.flash.ok { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.flash.err { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }

/* forms */
.form .field { margin-bottom: 18px; }
.form label { display: block; font-weight: 600; margin-bottom: 7px; color: #334155; }
.form label em { color: #dc2626; font-style: normal; }
.form input[type=text], .form input[type=password] { width: 100%; padding: 11px 13px; border: 1px solid #cbd5e1; border-radius: 9px; font-size: 14px; outline: none; transition: border .15s; }
.form input:focus { border-color: #2563eb; box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }
.form input[type=file] { width: 100%; padding: 9px; border: 1px dashed #cbd5e1; border-radius: 9px; background: #f8fafc; }
.form .hint { display: block; color: #94a3b8; font-size: 12px; margin-top: 6px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }

/* buttons */
.btn { display: inline-block; border: 1px solid transparent; border-radius: 9px; padding: 10px 18px; font-size: 14px; cursor: pointer; line-height: 1.2; }
.btn:hover { text-decoration: none; }
.btn.primary { background: #2563eb; color: #fff; }
.btn.primary:hover { background: #1d4ed8; }
.btn.ghost { background: #fff; border-color: #cbd5e1; color: #334155; }
.btn.ghost:hover { background: #f1f5f9; }
.btn.tiny { padding: 7px 12px; font-size: 13px; }
.btn.danger { background: #fef2f2; color: #b91c1c; border-color: #fecaca; }
.btn.danger:hover { background: #fee2e2; }

/* table */
.table-wrap { padding: 0; overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; min-width: 820px; }
.table th, .table td { padding: 13px 16px; text-align: left; border-bottom: 1px solid #eef2f7; vertical-align: middle; }
.table th { background: #f8fafc; color: #475569; font-size: 13px; font-weight: 600; }
.table tr:last-child td { border-bottom: none; }
.table .sub { color: #94a3b8; font-size: 12px; margin-top: 3px; }
.table .url-cell a { word-break: break-all; }
.table .ops { white-space: nowrap; }
.table .ops form.inline { display: inline-block; margin-left: 6px; }

.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 12px; }
.badge.ok { background: #ecfdf5; color: #047857; }
.badge.warn { background: #fffbeb; color: #b45309; }
.badge.err { background: #fef2f2; color: #b91c1c; }

/* kv */
.kv { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px dashed #eef2f7; font-size: 13px; align-items: center; }
.kv:last-of-type { border-bottom: none; }
.kv > span { color: #94a3b8; width: 110px; flex-shrink: 0; }
.kv code { word-break: break-all; }

/* qr */
.qr-preview { text-align: center; margin-top: 18px; }
.qr-preview img { width: 220px; height: 220px; object-fit: contain; border: 1px solid #e2e8f0; border-radius: 12px; padding: 8px; background: #fff; }
.qr-preview .meta { margin-top: 10px; font-size: 12px; color: #64748b; }
.err-text { color: #b91c1c; }

.decode-box { margin-top: 16px; padding: 14px; border-radius: 10px; font-size: 13px; line-height: 1.9; }
.decode-box.ok { background: #ecfdf5; border: 1px solid #a7f3d0; }
.decode-box.warn { background: #fffbeb; border: 1px solid #fde68a; }
.decode-box.err { background: #fef2f2; border: 1px solid #fecaca; }
.decode-box .line { word-break: break-all; }

/* login */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #1e3a8a, #2563eb); }
.login-card { background: #fff; padding: 38px 34px; border-radius: 16px; width: 360px; max-width: calc(100vw - 32px); box-shadow: 0 20px 50px rgba(15, 23, 42, .3); }
.login-card h1 { font-size: 22px; text-align: center; color: #0f172a; }
.login-card .sub { text-align: center; color: #94a3b8; font-size: 13px; margin: 8px 0 22px; }
.login-card label { display: block; font-size: 13px; color: #334155; margin-bottom: 7px; font-weight: 600; }
.login-card input { width: 100%; padding: 12px 14px; border: 1px solid #cbd5e1; border-radius: 10px; font-size: 14px; outline: none; }
.login-card input:focus { border-color: #2563eb; box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }
.login-card .btn { width: 100%; margin-top: 18px; padding: 12px; font-size: 15px; }
.login-card .tip { text-align: center; color: #94a3b8; font-size: 12px; margin-top: 16px; }