:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --ink: #1a2332;
  --muted: #5c6b7a;
  --line: #e2e8ef;
  --brand: #0b6e4f;
  --brand-2: #08a4a7;
  --accent: #d97706;
  --danger: #c0392b;
  --ok: #1f7a4c;
  --side: #0f1c2e;
  --side-ink: #d7e0ea;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(15, 28, 46, 0.06);
  --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: var(--font); color: var(--ink); background: var(--bg); }
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-2); }

.layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar {
  background: linear-gradient(180deg, #0f1c2e 0%, #13263d 100%);
  color: var(--side-ink);
  padding: 24px 16px;
  position: sticky; top: 0; height: 100vh;
}
.brand {
  display: flex; flex-direction: column; gap: 4px;
  padding: 8px 12px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 18px;
}
.brand-mark {
  font-size: 26px; font-weight: 800; letter-spacing: 0.04em;
  background: linear-gradient(90deg, #3dd6c6, #7dffb3);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand-sub { font-size: 12px; opacity: 0.7; }
.nav a {
  display: block; color: var(--side-ink); padding: 10px 12px; border-radius: 8px;
  margin-bottom: 4px; font-size: 14px;
}
.nav a:hover, .nav a.active { background: rgba(61, 214, 198, 0.12); color: #fff; }

.main { display: flex; flex-direction: column; min-width: 0; }
.topbar {
  background: var(--panel); border-bottom: 1px solid var(--line);
  padding: 14px 28px; display: flex; justify-content: space-between; align-items: center;
}
.topbar h1 { margin: 0; font-size: 18px; font-weight: 700; }
.topbar .user { color: var(--muted); font-size: 13px; }
.content { padding: 24px 28px 48px; }

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 22px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow);
}
.card .label { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.card .value { font-size: 26px; font-weight: 700; }
.card .value.accent { color: var(--brand); }

.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); margin-bottom: 18px; overflow: hidden;
}
.panel-h {
  padding: 14px 18px; border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.panel-h h2 { margin: 0; font-size: 15px; }
.panel-b { padding: 16px 18px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: 12px; }
tr:hover td { background: #f8fafb; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid transparent; border-radius: 8px; padding: 8px 14px;
  font-size: 13px; cursor: pointer; background: var(--brand); color: #fff;
}
.btn:hover { filter: brightness(1.05); color: #fff; }
.btn.secondary { background: #fff; color: var(--ink); border-color: var(--line); }
.btn.danger { background: var(--danger); }
.btn.sm { padding: 5px 10px; font-size: 12px; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
input, select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(8,164,167,0.25); border-color: var(--brand-2); }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 13px; }
.flash.ok { background: #e8f7ef; color: var(--ok); }
.flash.error { background: #fdecea; color: var(--danger); }

.tag {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px;
  background: #eef2f6; color: var(--muted);
}
.tag.ozon { background: #e8f1ff; color: #1d4ed8; }
.tag.wb { background: #f3e8ff; color: #7c3aed; }
.tag.shopee { background: #fff1e8; color: #c2410c; }
.tag.amazon { background: #fff7e0; color: #a16207; }
.tag.ok { background: #e8f7ef; color: var(--ok); }
.tag.fail { background: #fdecea; color: var(--danger); }

.login-wrap {
  min-height: 100vh; display: grid; place-items: center;
  background:
    radial-gradient(1000px 500px at 10% -10%, rgba(8,164,167,0.18), transparent),
    radial-gradient(800px 400px at 90% 110%, rgba(11,110,79,0.16), transparent),
    #0f1c2e;
}
.login-card {
  width: min(420px, 92vw); background: #fff; border-radius: 16px; padding: 32px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.35);
}
.login-card .logo {
  font-size: 32px; font-weight: 800; letter-spacing: 0.06em; margin-bottom: 6px;
  background: linear-gradient(90deg, #0b6e4f, #08a4a7);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.login-card p { color: var(--muted); margin-top: 0; margin-bottom: 24px; }
.login-card .btn { width: 100%; justify-content: center; margin-top: 8px; }

.muted { color: var(--muted); font-size: 12px; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.toolbar form { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.toolbar input, .toolbar select { width: auto; min-width: 160px; }

@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .cards { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}