:root {
  --bg: #fafafa;
  --fg: #222;
  --card: #fff;
  --border: #ddd;
  --primary: #1976d2;
  --success: #2e7d32;
  --danger: #d32f2f;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

html[data-theme="dark"] {
  --bg: #1f1f1f;
  --fg: #e5e5e5;
  --card: #2a2a2a;
  --border: #444;
  --primary: #42a5f5;
  --success: #66bb6a;
  --danger: #ef5350;
}

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.container {
  max-width: 1200px;
  margin: 16px auto;
  padding: 0 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
}

.flex-row {
  display: flex;
  align-items: center;
}
.gap { gap: 8px; }
.wrap { flex-wrap: wrap; }

.grid-form {
  display: grid;
  gap: 8px 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.grid-form label {
  display: flex;
  flex-direction: column;
  font-size: 14px;
}
.grid-form input {
  margin-top: 3px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
}
.form-actions {
  grid-column: 1 / -1;
  text-align: right;
}

.btn {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  cursor: pointer;
  color: var(--fg);
  font-size: 14px;
}
.btn:hover { opacity: .9; }
.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn.success {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}
.btn.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

.theme-toggle {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--card);
  cursor: pointer;
}

.small { font-size: 12px; opacity: .8; }
.mono  { font-family: var(--mono); }

.preview {
  max-width: 200px;
  margin-top: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
}
.hidden { display: none !important; }

.codebox {
  background: #111;
  color: #eee;
  padding: 8px;
  border-radius: 6px;
  max-height: 300px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 12px;
}

.table-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}
.table-wrapper {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th, td {
  border: 1px solid var(--border);
  padding: 6px;
  text-align: left;
  vertical-align: top;
}
th {
  background: rgba(0,0,0,.05);
}
html[data-theme="dark"] th {
  background: rgba(255,255,255,.08);
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--card);
  color: var(--fg);
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  opacity: 0;
  transform: translateY(12px);
  transition: .25s;
  box-shadow: 0 2px 6px rgba(0,0,0,.2);
  max-width: 80%;
  z-index: 9999;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.warehouse-select {
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--fg);
  font-size: 14px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 9990;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.6);
}
.modal-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--card);
  padding: 8px;
  border-radius: 8px;
  max-width: 90%;
  max-height: 90%;
  display: flex;
  flex-direction: column;
}
.modal-content img {
  max-width: 100%;
  max-height: 100%;
}
.modal-close {
  align-self: flex-end;
  background: none;
  border: none;
  color: var(--fg);
  font-size: 18px;
  cursor: pointer;
  margin-bottom: 4px;
}
.custom-file-upload {
  position: relative;
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--primary);
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: opacity 0.2s;
  margin-right: 10px;
  user-select: none;
}
.custom-file-upload:hover {
  opacity: 0.88;
}
.custom-file-upload input[type="file"] {
  display: none;
}