:root{
  --bg:#f4f6fb; --panel:#ffffff; --ink:#0f172a; --muted:#64748b; --line:#e2e8f0;
  --brand:#2563eb; --brand2:#1d4ed8; --ok:#16a34a; --warn:#d97706; --danger:#dc2626;
  --sidebar:#0b1220; --sidebar2:#111b2e;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:14px}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
input,select,textarea{font:inherit;width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
label{display:block;font-size:12px;color:var(--muted);margin:0 0 5px}
.field{margin-bottom:14px}
.row{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.row3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.btn{display:inline-flex;align-items:center;gap:6px;background:var(--brand);color:#fff;border:none;border-radius:8px;padding:9px 16px;font-weight:600}
.btn:hover{background:var(--brand2)}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:#f8fafc}
.btn.sm{padding:6px 10px;font-size:12px;border-radius:7px}
.btn.danger{background:#fef2f2;color:var(--danger);border:1px solid #fecaca}

/* layout */
.shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}
.sidebar{background:linear-gradient(180deg,var(--sidebar),var(--sidebar2));color:#cbd5e1;padding:18px 14px;position:sticky;top:0;height:100vh;overflow:auto}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:15px;margin:4px 6px 18px}
.logo .dot{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);display:flex;align-items:center;justify-content:center;font-size:13px}
.nav-group{font-size:11px;color:#64748b;letter-spacing:1px;margin:16px 8px 6px}
.nav a{display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:8px;color:#cbd5e1;font-size:13px}
.nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.nav a.active{background:rgba(59,130,246,.18);color:#fff;box-shadow:inset 2px 0 0 #3b82f6}
.main{min-width:0}
.topbar{height:60px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:5}
.topbar .co{font-weight:700}
.topbar .co span{font-weight:400;color:var(--muted);font-size:12px;margin-left:8px}
.usermenu{display:flex;align-items:center;gap:12px}
.avatar{width:32px;height:32px;border-radius:50%;background:#e0e7ff;color:#3730a3;display:flex;align-items:center;justify-content:center;font-weight:700}
.content{padding:24px;max-width:1280px;margin:0 auto}
h1{font-size:22px;margin-bottom:4px}
.sub{color:var(--muted);font-size:13px;margin-bottom:20px}

/* cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px}
.card .k{font-size:12px;color:var(--muted)}
.card .v{font-size:24px;font-weight:800;margin-top:6px}
.card .t{font-size:12px;color:var(--muted);margin-top:4px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:18px}
.panel h2{font-size:15px;margin-bottom:12px}
.panel .hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}

/* table */
table{width:100%;border-collapse:collapse}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:13px;vertical-align:top}
th{color:var(--muted);font-weight:600;font-size:12px;background:#f8fafc}
tr:hover td{background:#fbfdff}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600}
.tag.blue{background:#eff6ff;color:#1d4ed8}
.tag.green{background:#f0fdf4;color:#16a34a}
.tag.amber{background:#fffbeb;color:#b45309}
.tag.red{background:#fef2f2;color:#b91c1c}
.tag.gray{background:#f1f5f9;color:#475569}
.mono{font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}
.right{text-align:right}

/* select page */
.pick{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:40px}
.pickbox{width:100%;max-width:960px}
.pickbox h1{font-size:28px;text-align:center}
.pickbox .sub{text-align:center;margin-bottom:28px}
.types{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:26px}
.type{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;cursor:pointer;transition:.15s}
.type:hover{border-color:var(--brand);box-shadow:0 8px 24px rgba(37,99,235,.12);transform:translateY(-2px)}
.type .ic{font-size:26px;margin-bottom:10px}
.type b{font-size:16px}
.type p{color:var(--muted);font-size:12.5px;margin-top:6px;line-height:1.6}
.exist{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}
.exist .item{display:flex;align-items:center;justify-content:space-between;padding:10px 4px;border-bottom:1px solid var(--line)}
.exist .item:last-child{border-bottom:none}

/* wizard */
.wizard{max-width:820px;margin:0 auto;padding:36px 24px}
.steps{display:flex;gap:10px;margin:18px 0 26px}
.step{flex:1;padding:10px 12px;border-radius:10px;background:#eef2f8;color:var(--muted);font-size:12.5px}
.step.on{background:#eff6ff;color:#1d4ed8;font-weight:700;border:1px solid #bfdbfe}

/* invoice */
.invoice{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px;max-width:760px}
.invoice h3{text-align:center;font-size:20px;letter-spacing:2px;margin-bottom:4px}
.invoice .no{text-align:center;color:var(--muted);font-size:12px;margin-bottom:18px}
.invoice table{margin:10px 0}
.invoice th{width:120px;background:#f8fafc}
.invoice .total{font-weight:800;font-size:15px}

/* alert */
.alert{padding:12px 14px;border-radius:10px;font-size:13px;margin-bottom:10px}
.alert.warn{background:#fffbeb;border:1px solid #fde68a;color:#92400e}
.alert.ok{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534}
.alert.err{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}

/* misc */
.split{display:grid;grid-template-columns:1.4fr .9fr;gap:18px}
.kv{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px dashed var(--line);font-size:13px}
.kv:last-child{border-bottom:none}
.formbox{background:#f8fafc;border:1px dashed var(--line);border-radius:10px;padding:16px;margin-bottom:14px}
.actions{display:flex;gap:10px;margin-top:16px}
.empty{padding:30px;text-align:center;color:var(--muted)}
.toast{position:fixed;right:22px;bottom:22px;background:#0f172a;color:#fff;padding:10px 16px;border-radius:10px;font-size:13px;box-shadow:0 8px 24px rgba(0,0,0,.25);z-index:99}
.toast.err{background:#b91c1c}
@media (max-width:1000px){.cards{grid-template-columns:repeat(2,1fr)}.split{grid-template-columns:1fr}.types{grid-template-columns:1fr}.row,.row3{grid-template-columns:1fr}}

/* auth */
.auth{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0b1220,#16325c)}
.authbox{width:100%;max-width:440px;background:#fff;border-radius:16px;padding:30px;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.authbox h1{font-size:22px;margin-bottom:4px}
.authbox .sub{margin-bottom:18px}
.tabs{display:flex;gap:8px;margin-bottom:16px}
.tabs button{flex:1;padding:9px;border-radius:8px;border:1px solid var(--line);background:#fff}
.tabs button.on{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8;font-weight:700}
.err{color:#b91c1c;font-size:12.5px;margin-top:8px}
/* quotation editor */
.itemrow{display:grid;grid-template-columns:2fr .7fr .8fr .9fr 32px;gap:8px;margin-bottom:8px;align-items:center}
.itemrow input{padding:7px 9px}
.xbtn{border:none;background:#fef2f2;color:#b91c1c;border-radius:7px;height:32px;cursor:pointer}
.calcbox{background:#eff6ff;border:1px solid #bfdbfe;border-radius:10px;padding:14px;margin-top:10px;display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.calcbox b{display:block;font-size:18px;color:#1d4ed8}
/* print */
@media print{
  .sidebar,.topbar,.actions,.no-print{display:none!important}
  .content{padding:0}
  .panel{border:none;box-shadow:none}
}

.pagebar{display:flex;gap:8px;align-items:center;margin-bottom:12px}
.pagebar input{flex:1;padding:9px 12px;border:1px solid #cbd5e1;border-radius:8px;font-size:13px;outline:none}
.pagebar input:focus{border-color:#2563eb}
.pagebar select{padding:9px 10px;border:1px solid #cbd5e1;border-radius:8px;font-size:13px;background:#fff}