:root {
  --page-bg: #f5f7fb;
  --surface: #ffffff;
  --line: #dfe4ee;
  --muted: #6b7280;
  --text: #1f2937;
  --brand: #2563eb;
  --aside: #182230;
  --aside-active: #26364d;
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  background: var(--page-bg);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(360px, 460px) 1fr;
  background: #eef2f8;
}

.login-panel {
  padding: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--surface);
  border-right: 1px solid var(--line);
}

.login-brand {
  margin-bottom: 42px;
}

.login-brand h1 {
  margin: 0 0 10px;
  font-size: 30px;
  line-height: 1.2;
  font-weight: 760;
}

.login-brand p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.login-visual {
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.visual-board {
  width: min(760px, 100%);
  min-height: 560px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  align-content: center;
}

.visual-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  box-shadow: 0 18px 42px rgba(31, 41, 55, 0.08);
}

.visual-panel h2 {
  margin: 0 0 18px;
  font-size: 18px;
}

.stat-line {
  display: flex;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid #edf0f6;
}

.stat-line:last-child {
  border-bottom: 0;
}

.stat-label {
  color: var(--muted);
}

.stat-value {
  font-weight: 720;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px 1fr;
}

.aside {
  background: var(--aside);
  color: #d8dee9;
  display: flex;
  flex-direction: column;
}

.aside-brand {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #3b82f6;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
}

.brand-title {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title strong {
  font-size: 15px;
  color: #fff;
}

.brand-title span {
  font-size: 12px;
  color: #97a3b6;
}

.nav {
  padding: 14px 10px 20px;
  overflow-y: auto;
}

.nav-section {
  margin: 14px 10px 8px;
  color: #8e99ab;
  font-size: 12px;
}

.nav-item {
  height: 38px;
  border-radius: 7px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #d8dee9;
  cursor: pointer;
  user-select: none;
}

.nav-item:hover,
.nav-item.active {
  background: var(--aside-active);
  color: #fff;
}

.main {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.topbar-title {
  font-size: 18px;
  font-weight: 720;
}

.content {
  padding: 22px;
  min-width: 0;
}

.page-band {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  margin-bottom: 16px;
}

.page-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.page-head h2 {
  margin: 0 0 6px;
  font-size: 20px;
}

.page-head p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 14px;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 16px;
}

.metric span {
  color: var(--muted);
  font-size: 13px;
}

.metric strong {
  display: block;
  margin-top: 10px;
  font-size: 26px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  column-gap: 18px;
}

.wide {
  grid-column: 1 / -1;
}

.table-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.sku-editor,
.spec-editor,
.image-editor {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 12px;
}

.spec-value-row,
.image-row {
  display: grid;
  grid-template-columns: 1fr 140px 90px 36px;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}

.image-row {
  grid-template-columns: 1fr 110px 36px;
}

.sku-table {
  overflow-x: auto;
}

.muted {
  color: var(--muted);
}

.file-upload-row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.dialog-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.coupon-scope-panel {
  width: 100%;
  display: grid;
  gap: 12px;
}

.coupon-scope-group {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.coupon-scope-group-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.coupon-scope-rule {
  border-top: 1px solid var(--line);
  padding-top: 10px;
  margin-top: 10px;
}

.coupon-scope-group-head + .coupon-scope-rule {
  border-top: 0;
  padding-top: 0;
  margin-top: 0;
}

.scope-all-hint {
  margin-top: 8px;
}

.scope-rule-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 8px;
}

.scope-preview {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--muted);
  background: var(--bg);
}

.el-card {
  border-radius: 8px;
}

.el-button {
  border-radius: 7px;
}

.el-table {
  --el-table-header-bg-color: #f8fafc;
}

@media (max-width: 980px) {
  .login-shell,
  .app-shell {
    grid-template-columns: 1fr;
  }

  .login-visual,
  .aside {
    display: none;
  }

  .metric-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    padding: 0 14px;
  }

  .content {
    padding: 14px;
  }
}