:root {
  --bg: #f3f1ec;
  --card: #ffffff;
  --text: #1c1b19;
  --muted: #7a756c;
  --brand: #c45c26;
  --brand-dark: #9a4218;
  --line: #e6e1d8;
  --ok: #2f8f5b;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
}
.hidden { display: none !important; }

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(900px 400px at 10% 0%, rgba(196,92,38,.18), transparent 60%),
    linear-gradient(160deg, #f7f3ec, #ebe4d8);
}
.login-card {
  width: min(420px, 92vw);
  background: var(--card);
  border-radius: 18px;
  padding: 36px 32px;
  box-shadow: 0 20px 50px rgba(40, 30, 20, .08);
}
.brand {
  display: inline-block;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--brand);
  margin-bottom: 10px;
}
.login-card h1 { margin: 0 0 8px; font-size: 26px; }
.sub { color: var(--muted); margin: 0 0 24px; }
.login-card label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 6px; }
.login-card input {
  width: 100%;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0 12px;
  font-size: 15px;
}
.btn-primary {
  margin-top: 20px;
  width: 100%;
  height: 46px;
  border: 0;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}
.btn-primary:hover { background: var(--brand-dark); }
.error { color: #c0392b; min-height: 20px; font-size: 13px; }

.layout { min-height: 100vh; display: grid; grid-template-columns: 220px 1fr; }
.sider {
  background: #1f1c18;
  color: #f5f1ea;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sider-brand { font-weight: 800; margin-bottom: 18px; padding: 0 8px; }
.nav-item {
  text-align: left;
  border: 0;
  background: transparent;
  color: #d7d0c4;
  padding: 12px 14px;
  border-radius: 10px;
  cursor: pointer;
}
.nav-item.active, .nav-item:hover { background: rgba(196,92,38,.25); color: #fff; }
.logout {
  margin-top: auto;
  border: 1px solid rgba(255,255,255,.15);
  background: transparent;
  color: #eee;
  border-radius: 10px;
  padding: 10px;
  cursor: pointer;
}
.content { padding: 28px; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.topbar h2 { margin: 0; }
#shopTag {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  color: var(--muted);
  font-size: 13px;
}

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.card {
  background: var(--card);
  border-radius: 14px;
  padding: 18px;
  border: 1px solid var(--line);
}
.card .label { color: var(--muted); font-size: 13px; }
.card .value { font-size: 28px; font-weight: 800; margin-top: 8px; }
.panel {
  margin-top: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}
.panel h3 { margin: 0 0 14px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 8px; border-bottom: 1px solid var(--line); font-size: 14px; }
th { color: var(--muted); font-weight: 600; }
.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(47,143,91,.12);
  color: var(--ok);
  font-size: 12px;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.form-grid input, .form-grid select {
  width: 100%;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 10px;
}
.actions { margin-top: 16px; display: flex; gap: 10px; }
.btn-secondary {
  height: 40px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 0 16px;
  cursor: pointer;
}

@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .sider { flex-direction: row; flex-wrap: wrap; }
  .cards { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}