/* Option B: Dark compact – charcoal bg, dense tables, two-column */
:root {
  --bg: #1a1a1a;
  --bg-panel: #242424;
  --border: #333;
  --text: #e0e0e0;
  --text-muted: #999;
  --accent: #22c55e;
  --accent-dim: #16a34a;
  --danger: #ef4444;
  --input-bg: #2a2a2a;
  --font-mono: ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-mono), system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 13px;
}

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

.logo {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.manage-link {
  color: var(--accent);
  text-decoration: none;
}

.manage-link:hover {
  text-decoration: underline;
}

.main {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  max-width: 1400px;
  margin: 0 auto;
}

.main.two-col {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
}

.main.two-col .summary-panel {
  grid-column: 1 / -1;
}

@media (max-width: 900px) {
  .main.two-col {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem;
}

.panel h2 {
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 0.4rem 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.data-table tbody tr:hover {
  background: rgba(255,255,255,0.03);
}

.data-table input,
.data-table select {
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.25rem 0.4rem;
  font: inherit;
  width: 100%;
  min-width: 60px;
}

.data-table input:focus,
.data-table select:focus {
  outline: 1px solid var(--accent);
}

.data-table .num {
  text-align: right;
  white-space: nowrap;
}

.total-line {
  margin: 0.75rem 0 0 0;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

.total-line span {
  color: var(--accent);
}

.right-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.summary-panel .summary-box {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.75rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0;
}

.summary-row.highlight {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

.summary-row.highlight .positive {
  color: var(--accent);
}

.summary-row.highlight .negative {
  color: var(--danger);
}

.brand-image-wrap {
  text-align: center;
  padding: 1.25rem 1rem;
  background: var(--bg);
}

.brand-image {
  width: 560px;
  height: auto;
  opacity: 0.9;
}

.btn {
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.4rem 0.75rem;
  font: inherit;
  cursor: pointer;
  border-radius: 4px;
}

.btn:hover {
  background: #333;
  border-color: var(--accent);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #111;
}

.btn-primary:hover {
  background: var(--accent-dim);
  color: #111;
}

.btn-add {
  margin-top: 0.5rem;
}

.btn-small {
  padding: 0.25rem 0.5rem;
  font-size: 0.85rem;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal[aria-hidden="false"] {
  display: flex;
}

.modal-content {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow: auto;
}

.modal-content.modal-wide {
  max-width: min(92vw, 800px);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  margin: 0;
  font-size: 1rem;
}

.btn-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 0 0.25rem;
}

.btn-close:hover {
  color: var(--text);
}

.modal-body {
  padding: 1rem;
}

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

.modal-body label input,
.modal-body label select {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.4rem;
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  font: inherit;
}

.specs-fieldset {
  margin: 1rem 0;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.specs-fieldset legend {
  padding: 0 0.25rem;
}

#specsContainer .spec-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.5rem;
  min-width: 0;
}

#specsContainer .spec-row input {
  padding: 0.3rem;
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  font: inherit;
  min-width: 0;
}

.form-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.product-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0 0;
}

.product-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  gap: 0.5rem;
}

.product-list li .name {
  flex: 1;
}

.product-list .btn-delete {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
}

.product-list .btn-delete:hover {
  color: var(--danger);
}