:root {
  --primary: #0d4f8b;
  --primary-dark: #083a66;
  --primary-light: #e8f2fb;
  --accent: #f59e0b;
  --success: #059669;
  --danger: #dc2626;
  --warning: #d97706;
  --bg: #f4f7fb;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --qpl: #7c3aed;
  --abl: #0284c7;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.1);
  --radius: 10px;
  --sidebar-w: 260px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ── Auth layout ── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0d4f8b 0%, #1e6bb8 50%, #0ea5e9 100%);
  padding: 1.5rem;
}

.auth-card {
  background: var(--surface);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 420px;
  padding: 2.5rem;
}

.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-logo h1 {
  margin: 0.5rem 0 0;
  font-size: 1.5rem;
  color: var(--primary);
}

.auth-logo p {
  margin: 0.25rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.auth-logo svg {
  color: var(--primary);
}

/* ── App shell ── */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-w);
  background: var(--primary-dark);
  color: #fff;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
}

.sidebar-brand {
  padding: 1.5rem 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand h2 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.sidebar-brand span {
  font-size: 0.75rem;
  opacity: 0.7;
  display: block;
  margin-top: 0.15rem;
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.925rem;
  transition: background 0.15s;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  text-decoration: none;
  color: #fff;
}

.nav-link.active {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-weight: 600;
}

.nav-link svg {
  flex-shrink: 0;
  opacity: 0.9;
}

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.8rem;
  opacity: 0.75;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 2rem;
  max-width: 1400px;
}

.page-header {
  margin-bottom: 1.75rem;
}

.page-header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.65rem;
  font-weight: 700;
}

.page-header p {
  margin: 0;
  color: var(--text-muted);
}

/* ── Cards & grids ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.card-title {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

@media (max-width: 1100px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding: 1rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ── Stat cards ── */
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.stat-card .label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-card .value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  margin-top: 0.25rem;
}

.stat-card .sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* ── Forms ── */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--text);
}

.form-group .hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.925rem;
  font-family: inherit;
  background: #fff;
  transition: border-color 0.15s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13, 79, 139, 0.12);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.form-row-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.checkbox-label input {
  width: auto;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border: none;
  border-radius: 8px;
  font-size: 0.925rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.825rem;
}

.btn-block {
  width: 100%;
}

.btn-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ── Tables ── */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--bg);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
}

tr:hover td {
  background: #fafbfc;
}

/* ── Badges ── */
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-qpl {
  background: #ede9fe;
  color: var(--qpl);
}

.badge-abl {
  background: #e0f2fe;
  color: var(--abl);
}

.badge-success {
  background: #d1fae5;
  color: var(--success);
}

.badge-danger {
  background: #fee2e2;
  color: var(--danger);
}

.badge-warning {
  background: #fef3c7;
  color: var(--warning);
}

/* ── Alerts ── */
.alert {
  padding: 0.85rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.alert-warning {
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
}

.alert-info {
  background: var(--primary-light);
  color: var(--primary-dark);
  border: 1px solid #bfdbfe;
}

/* ── Container selector cards ── */
.container-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.container-card {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  background: var(--surface);
}

.container-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.container-card.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(13, 79, 139, 0.15);
}

.container-card.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  background: #f1f5f9;
  border-color: var(--border);
  filter: grayscale(0.35);
}

.container-card.disabled:hover {
  border-color: var(--border);
  box-shadow: none;
}

.container-card.disabled h4 {
  color: var(--text-muted);
}

.vehicle-unfit-reason {
  color: var(--danger) !important;
  font-size: 0.72rem !important;
  font-weight: 500;
  margin-top: 0.5rem !important;
  line-height: 1.35 !important;
}

.vehicle-fit-ok {
  color: var(--success) !important;
  font-size: 0.72rem !important;
  margin-top: 0.35rem !important;
}

.container-card svg {
  width: 64px;
  height: 48px;
  margin-bottom: 0.75rem;
  color: var(--primary);
}

.container-card h4 {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
}

.container-card p {
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ── SKU picker ── */
.sku-row {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.5rem;
  background: #fafbfc;
}

.sku-row.selected {
  border-color: var(--primary);
  background: var(--primary-light);
}

.sku-info strong {
  display: block;
  font-size: 0.9rem;
}

.sku-info small {
  color: var(--text-muted);
  font-size: 0.78rem;
}

.qty-input {
  width: 80px;
  text-align: center;
}

/* ── Layer view ── */
.layer-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.layer-tab {
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  font-size: 0.85rem;
  font-family: inherit;
}

.layer-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.layer-viewport {
  background: #f1f5f9;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  overflow: auto;
}

.layer-viewport--horizontal {
  padding: 1rem 1.5rem 2.5rem;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.layer-blueprint-wrap {
  position: relative;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding-left: 4.5rem;
  padding-bottom: 1.75rem;
  box-sizing: border-box;
}

.layer-container {
  position: relative;
  margin: 0 auto;
  background: #fff;
  border: 3px solid var(--primary-dark);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.layer-container--horizontal {
  width: 100%;
  max-width: 100%;
  max-height: 220px;
  height: auto;
  margin: 0 auto;
  box-sizing: border-box;
}

.layer-container .door-label {
  position: absolute;
  bottom: -28px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.layer-container .door-label--left {
  bottom: auto;
  left: -6.10rem;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: horizontal-tb;
  text-align: right;
  width: 5rem;
}

.layer-container .arrow-label {
  position: absolute;
  top: 50%;
  right: -120px;
  transform: translateY(-50%);
  font-size: 0.75rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.layer-container .arrow-label--bottom {
  top: auto;
  right: auto;
  bottom: -1.65rem;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
}

.layer-container--horizontal .layer-cell {
  min-height: 0;
  min-width: 0;
  font-size: clamp(0.5rem, 1.2vw, 0.7rem);
}

.layer-grid {
  display: grid;
  width: 100%;
  height: 100%;
  min-height: 0;
  gap: 2px;
  padding: 4px;
  box-sizing: border-box;
}

.layer-container--horizontal .layer-grid {
  position: absolute;
  inset: 4px;
}

.layer-cell {
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 600;
  color: #fff;
  min-height: 28px;
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}

.layer-cell.empty {
  background: #e2e8f0;
  color: transparent;
}

.layer-meta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  font-size: 0.875rem;
}

.layer-meta span {
  color: var(--text-muted);
}

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

.legend {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
}

.legend-swatch {
  width: 14px;
  height: 14px;
  border-radius: 3px;
}

/* ── Utilization bar ── */
.util-bar {
  height: 10px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.util-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #0ea5e9);
  border-radius: 999px;
  transition: width 0.4s ease;
}

.util-bar-fill.overweight {
  background: linear-gradient(90deg, var(--danger), var(--warning));
}

/* ── Checklist ── */
.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step;
}

.checklist li {
  counter-increment: step;
  padding: 0.85rem 1rem 0.85rem 3rem;
  border-left: 3px solid var(--border);
  margin-bottom: 0.5rem;
  background: var(--surface);
  border-radius: 0 8px 8px 0;
  position: relative;
  font-size: 0.9rem;
}

.checklist li::before {
  content: counter(step);
  position: absolute;
  left: 0.85rem;
  top: 0.85rem;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.checklist li.qpl {
  border-left-color: var(--qpl);
}

.checklist li.abl {
  border-left-color: var(--abl);
}

/* ── Modal ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--surface);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.75rem;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.25rem;
}

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

/* ── Print ── */
@media print {
  .sidebar,
  .no-print,
  .layer-tabs {
    display: none !important;
  }

  .main-content {
    margin-left: 0;
    padding: 0;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ccc;
    break-inside: avoid;
  }
}

/* ── Quick actions ── */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.quick-action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: box-shadow 0.15s, border-color 0.15s;
}

.quick-action:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
  text-decoration: none;
}

.quick-action svg {
  color: var(--primary);
}

.quick-action h3 {
  margin: 0;
  font-size: 1rem;
}

.quick-action p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-state svg {
  opacity: 0.4;
  margin-bottom: 1rem;
}

/* ── Wizard steps ── */
.wizard-steps {
  display: flex;
  gap: 0;
  margin-bottom: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.wizard-step {
  flex: 1;
  padding: 1rem 1.25rem;
  text-align: center;
  border-right: 1px solid var(--border);
  position: relative;
  opacity: 0.55;
}

.wizard-step:last-child {
  border-right: none;
}

.wizard-step.active {
  opacity: 1;
  background: var(--primary-light);
}

.wizard-step.done {
  opacity: 0.85;
}

.wizard-step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.wizard-step.active .step-num {
  background: var(--primary);
  color: #fff;
}

.wizard-step.done .step-num {
  background: var(--success);
  color: #fff;
}

.wizard-step .step-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
}

.wizard-step .step-desc {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.wizard-panel {
  display: none;
}

.wizard-panel.active {
  display: block;
}

.wizard-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

/* ── Cargo type cards ── */
.cargo-type-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.cargo-type-card {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 0.75rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  background: var(--surface);
}

.cargo-type-card:hover {
  border-color: var(--primary);
}

.cargo-type-card.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(13, 79, 139, 0.15);
}

.cargo-type-card svg {
  width: 48px;
  height: 48px;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.cargo-type-card h4 {
  margin: 0;
  font-size: 0.875rem;
}

.cargo-form-area {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-top: 1rem;
}

/* ── Vehicle tabs ── */
.vehicle-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.vehicle-tab {
  padding: 0.55rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
}

.vehicle-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.layer-cell.circle {
  border-radius: 50%;
}

/* ── Product spacing / stuffing settings ── */
.settings-panel {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}

.settings-panel-title {
  margin: 0 0 0.25rem;
  font-size: 0.95rem;
  color: var(--primary);
}

.settings-panel-hint {
  margin: 0 0 0.75rem;
}

.settings-fields {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.setting-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  font-size: 0.9rem;
}

.setting-row.toggle-number {
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--border);
}

.setting-row.toggle-number:last-child {
  border-bottom: none;
}

.setting-value-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 1.75rem;
}

.setting-value-wrap input {
  width: 120px;
}

.setting-unit {
  font-size: 0.8rem;
  color: var(--text-muted);
  min-width: 2.5rem;
}

.setting-hint {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: normal;
  margin-top: 0.15rem;
}

@media (max-width: 768px) {
  .wizard-steps { flex-direction: column; }
  .wizard-step { border-right: none; border-bottom: 1px solid var(--border); }
}