:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1f2328;
  --muted: #59636e;
  --accent: #0a7ea4;
  --error: #b42318;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

h1 {
  font-size: 1.5rem;
}

.login-box {
  max-width: 320px;
  margin: 12vh auto;
  padding: 2rem;
  background: var(--panel);
  border: 1px solid #d0d7de;
  border-radius: 8px;
}

.login-box h1 {
  margin: 0 0 0.25rem;
}

.subtitle {
  color: var(--muted);
  margin-top: 0;
}

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

.flash {
  margin: 0.5rem 1.25rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 0.9rem;
}

.flash.ok {
  color: #1a7f37;
  background: color-mix(in srgb, #1a7f37 8%, transparent);
  border-color: color-mix(in srgb, #1a7f37 35%, transparent);
}

.flash.warn {
  color: var(--error);
  background: color-mix(in srgb, var(--error) 8%, transparent);
  border-color: color-mix(in srgb, var(--error) 35%, transparent);
}

.flash.info {
  color: var(--muted);
  background: color-mix(in srgb, var(--muted) 8%, transparent);
  border-color: color-mix(in srgb, var(--muted) 30%, transparent);
}

label {
  display: block;
  margin-bottom: 0.75rem;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0.4rem 0.5rem;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  margin-top: 0.2rem;
}

button {
  padding: 0.45rem 1rem;
  border: 1px solid transparent;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--panel);
  border-bottom: 1px solid #d0d7de;
}

.topbar nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
}

.topbar nav a.active {
  color: var(--accent);
  font-weight: 600;
}

.topbar form {
  margin: 0;
}

main {
  padding: 1.25rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --panel: #151b23;
    --text: #e6edf3;
    --muted: #9198a1;
    --accent: #2f81f7;
    --error: #ff7b72;
  }
  .login-box,
  .topbar {
    border-color: #30363d;
  }
  input[type="text"],
  input[type="password"] {
    border-color: #30363d;
    background: #0d1117;
    color: var(--text);
  }
}

/* ---- 布局组件 ---- */
.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.25rem 1.25rem;
}

.page-head h2 {
  margin: 0;
}

.page-head a:not(.button) {
  color: var(--accent);
}

.cards {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0 1.25rem;
}

.card {
  flex: 1;
  min-width: 140px;
  padding: 1.25rem;
  background: var(--panel);
  border: 1px solid #d0d7de;
  border-radius: 8px;
  text-align: center;
  color: inherit;
  text-decoration: none;
}

.card-num {
  font-size: 1.75rem;
  font-weight: 700;
}

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

@media (prefers-color-scheme: dark) {
  .card {
    border-color: #30363d;
  }
}

.filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 0.75rem 1.25rem;
}

.filters input,
.filters select {
  padding: 0.4rem 0.5rem;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
}

@media (prefers-color-scheme: dark) {
  .filters input,
  .filters select {
    border-color: #30363d;
  }
}

.data-table {
  border-collapse: collapse;
  margin: 0.5rem 1.25rem;
  width: calc(100% - 2.5rem);
}

.data-table th,
.data-table td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid #d0d7de;
  font-size: 0.9rem;
}

.data-table th {
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}

@media (prefers-color-scheme: dark) {
  .data-table th,
  .data-table td {
    border-bottom-color: #30363d;
  }
}

.row-actions {
  white-space: nowrap;
}

.row-actions a {
  color: var(--accent);
  margin-right: 0.5rem;
}

.inline {
  display: inline;
  margin: 0;
}

.link-danger {
  background: none;
  border: none;
  color: var(--error);
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
}

.mono {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.8rem;
  color: var(--muted);
}

.empty {
  color: var(--muted);
  text-align: center;
  padding: 2rem 0 !important;
}

.stock-low {
  color: #d33;
  font-weight: 600;
}

.loc-sel {
  max-width: 96px;
  padding: 2px 4px;
}

.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 2px 4px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.5rem 1rem;
  padding: 0 1.25rem;
  max-width: 860px;
}

.form-grid p {
  margin: 0;
}

.form-grid .full {
  grid-column: 1 / -1;
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.form-grid input,
.form-grid select {
  width: 100%;
  padding: 0.4rem 0.5rem;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
}

@media (prefers-color-scheme: dark) {
  .form-grid input,
  .form-grid select {
    border-color: #30363d;
  }
}

a.button {
  text-decoration: none;
}

.button {
  display: inline-block;
  padding: 0.45rem 1rem;
  border: 1px solid transparent;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.button.small {
  padding: 0.2rem 0.6rem;
  font-size: 0.85rem;
}

/* ---- 面包屑 ---- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  padding: 0.75rem 1.25rem 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--accent);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

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

.breadcrumb .current {
  color: var(--text);
}

.brand {
  color: inherit;
  text-decoration: none;
}

/* ---- 详情/库存组件 ---- */
.meta-box {
  padding: 0 1.25rem;
}

.meta-box p {
  margin: 0.25rem 0;
}

.meta-box strong {
  color: var(--muted);
  font-weight: 600;
}

.hint {
  padding: 0 1.25rem;
  color: var(--muted);
}

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

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

.summary strong {
  color: var(--text);
}

.qty-input {
  width: 5em;
  padding: 0.25rem 0.4rem;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
}

@media (prefers-color-scheme: dark) {
  .qty-input {
    border-color: #30363d;
  }
}

/* ---- BOM / 项目 ---- */
.bom-input {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.85rem;
}

@media (prefers-color-scheme: dark) {
  .bom-input {
    border-color: #30363d;
  }
}

.row-ok td {
  color: var(--muted);
}

.row-short {
  background: color-mix(in srgb, var(--error) 8%, transparent);
}

.row-ordered td {
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-color: color-mix(in srgb, var(--muted) 60%, transparent);
}

.row-ordered .chk-col {
  text-decoration: none;
}

.chk-col {
  width: 1%;
  white-space: nowrap;
  text-align: center;
}

.order-progress {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--muted);
  margin-left: 0.75rem;
}

.order-progress strong {
  color: var(--accent);
}

.ok {
  color: #1a7f37;
}

.warn {
  color: var(--error);
}

.short-num {
  color: var(--error);
}

.short-zero {
  color: #1a7f37;
}

@media (prefers-color-scheme: dark) {
  .ok,
  .short-zero {
    color: #3fb950;
  }
}