:root {
  --bg: #f0ebe3;
  --bg-deep: #e4ddd2;
  --surface: #faf8f5;
  --surface-2: #ffffff;
  --ink: #1a1f16;
  --ink-muted: #5c6358;
  --ink-faint: #8a9184;
  --line: #d4cdc2;
  --accent: #2d5a3d;
  --accent-hover: #234a31;
  --accent-soft: #e8f0eb;
  --warn: #c4781a;
  --warn-bg: #fdf3e3;
  --danger: #b33a2b;
  --danger-bg: #fceceb;
  --ok: #2d5a3d;
  --ok-bg: #e8f0eb;
  --info: #2a5a7a;
  --info-bg: #e8f1f6;
  --shadow: 0 1px 3px rgba(26, 31, 22, 0.06), 0 4px 16px rgba(26, 31, 22, 0.04);
  --radius: 10px;
  --font: 'DM Sans', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --nav-w: 240px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; }

body {
  font-family: var(--font);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(45, 90, 61, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 90% 100%, rgba(196, 120, 26, 0.06), transparent),
    var(--bg);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

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

.sidebar {
  width: var(--nav-w);
  background: linear-gradient(180deg, #1e2e22 0%, #16241a 100%);
  color: #e8ece6;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform 0.2s ease;
}

.sidebar-brand {
  padding: 1.4rem 1.25rem 1.2rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-brand h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}

.sidebar-brand span {
  display: block;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  margin-top: 0.15rem;
}

.sidebar-nav {
  flex: 1;
  padding: 0.75rem 0.6rem;
  overflow-y: auto;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 2px;
  transition: background 0.15s, color 0.15s;
}

.nav-link:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
  text-decoration: none;
}

.nav-link.active {
  background: rgba(255,255,255,0.12);
  color: #fff;
}

.nav-icon {
  width: 1.25rem;
  text-align: center;
  opacity: 0.8;
  font-size: 0.95rem;
}

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.8rem;
}

.sidebar-footer .user-name {
  font-weight: 600;
  color: #fff;
}

.sidebar-footer .user-role {
  color: rgba(255,255,255,0.45);
  text-transform: capitalize;
}

.main {
  flex: 1;
  margin-left: var(--nav-w);
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.75rem;
  background: rgba(250, 248, 245, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar h2 {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.content {
  padding: 1.5rem 1.75rem 2.5rem;
}

.menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.25rem;
}

/* Cards & panels */
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.15rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}

.panel-header h3 {
  font-size: 0.95rem;
  font-weight: 600;
}

.panel-body { padding: 1.15rem; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  box-shadow: var(--shadow);
}

.stat-card .label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-card .value {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-top: 0.25rem;
}

.stat-card.warn .value { color: var(--warn); }
.stat-card.danger .value { color: var(--danger); }
.stat-card.accent .value { color: var(--accent); }

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th, td {
  padding: 0.65rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

th {
  font-weight: 600;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  background: var(--bg-deep);
  white-space: nowrap;
}

tr:hover td { background: rgba(45, 90, 61, 0.03); }

tr.stock-warning td { background: var(--warn-bg); }
tr.stock-critical td { background: var(--danger-bg); }
tr.stock-warning:hover td { background: #fae8c8; }
tr.stock-critical:hover td { background: #f8d9d5; }

.code {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-critical { background: var(--danger-bg); color: var(--danger); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-muted { background: var(--bg-deep); color: var(--ink-muted); }

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

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

.form-group label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-2);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 90, 61, 0.15);
}

.form-group textarea { min-height: 80px; resize: vertical; }

.form-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: 7px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
  white-space: nowrap;
}

.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-secondary {
  background: var(--surface-2);
  border-color: var(--line);
  color: var(--ink);
}
.btn-secondary:hover:not(:disabled) { background: var(--bg-deep); }

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover:not(:disabled) { background: #9a3124; }

.btn-ghost {
  background: transparent;
  color: var(--ink-muted);
}
.btn-ghost:hover:not(:disabled) { background: var(--bg-deep); color: var(--ink); }

.btn-sm {
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
}

/* Toolbar */
.toolbar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 1.25rem;
}

.toolbar .search {
  flex: 1;
  min-width: 180px;
  max-width: 360px;
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-2);
}

.toolbar .search:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 90, 61, 0.15);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 31, 22, 0.45);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 200;
  padding: 2rem 1rem;
  overflow-y: auto;
  animation: fadeIn 0.15s ease;
}

.modal {
  background: var(--surface);
  border-radius: 12px;
  width: 100%;
  max-width: 640px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  animation: slideUp 0.2s ease;
}

.modal.wide { max-width: 860px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.35rem;
  border-bottom: 1px solid var(--line);
}

.modal-header h3 { font-size: 1.05rem; font-weight: 600; }

.modal-body { padding: 1.35rem; }
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1rem 1.35rem;
  border-top: 1px solid var(--line);
  background: var(--bg);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Login */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background:
    linear-gradient(135deg, #1e2e22 0%, #2d5a3d 40%, #1a3020 100%);
}

.login-card {
  background: var(--surface);
  border-radius: 14px;
  padding: 2.25rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.3);
}

.login-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.login-card .subtitle {
  color: var(--ink-muted);
  font-size: 0.9rem;
  margin-bottom: 1.75rem;
}

.login-card .form-group { margin-bottom: 1rem; }
.login-card .form-group input,
.login-card .form-control { width: 100%; }
.login-card .btn { width: 100%; margin-top: 0.5rem; padding: 0.7rem; }

.login-hint {
  margin-top: 1.25rem;
  padding: 0.85rem;
  background: var(--bg);
  border-radius: 8px;
  font-size: 0.78rem;
  color: var(--ink-muted);
  line-height: 1.6;
}

.login-hint code {
  font-family: var(--mono);
  background: var(--bg-deep);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-size: 0.75rem;
}

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.alert-error { background: var(--danger-bg); color: var(--danger); border: 1px solid #f0c4be; }
.alert-success { background: var(--ok-bg); color: var(--ok); border: 1px solid #c5dbc9; }
.alert-info { background: var(--info-bg); color: var(--info); border: 1px solid #c5d8e4; }
.alert-warn { background: var(--warn-bg); color: var(--warn); border: 1px solid #f0d9a8; }

.empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--ink-faint);
}

.spinner {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

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

.mono { font-family: var(--mono); font-size: 0.85rem; }
.muted { color: var(--ink-muted); }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }

.bom-tree {
  padding-left: 1rem;
  border-left: 2px solid var(--accent-soft);
}

.bom-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  font-size: 0.875rem;
}

.tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.25rem;
}

.tab {
  padding: 0.6rem 1rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-weight: 500;
  color: var(--ink-muted);
  margin-bottom: -1px;
}

.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main { margin-left: 0; }
  .menu-btn { display: block; }
  .grid-2 { grid-template-columns: 1fr; }
  .content { padding: 1rem; }
  .topbar { padding: 0.85rem 1rem; }
  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 99;
  }
}

/* Django widget + SaaS helpers (keep original look) */
.form-control,
.form-select,
input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="file"],
select,
textarea {
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-2);
  font: inherit;
  color: inherit;
  max-width: 100%;
}
.form-control:focus,
.form-select:focus,
input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 90, 61, 0.15);
}
.form-check-input { width: 1rem; height: 1rem; accent-color: var(--accent); }
.form-check-label { font-size: 0.875rem; }
.helptext, .form-text { font-size: 0.75rem; color: var(--ink-muted); }
.errorlist { list-style: none; color: var(--danger); font-size: 0.8rem; margin: 0.25rem 0; }
.toolbar select,
.toolbar input[type="number"] {
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-2);
}
tr.row-selected td { outline: 2px solid var(--accent); outline-offset: -2px; }
.modal-overlay[hidden] { display: none !important; }
.sidebar-overlay[hidden] { display: none !important; }
.flex-between { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 0.75rem; }
.inline-flex { display: inline-flex; align-items: center; gap: 0.5rem; }
.pagination { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1rem; }
.pagination a, .pagination span {
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
  font-size: 0.85rem;
}
.pagination .current { background: var(--accent); color: #fff; border-color: var(--accent); }
.accordion-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  background: var(--surface);
  overflow: hidden;
}
.accordion-item summary {
  padding: 0.85rem 1.1rem;
  cursor: pointer;
  font-weight: 600;
  background: var(--surface-2);
  list-style: none;
}
.accordion-item summary::-webkit-details-marker { display: none; }
.accordion-body { padding: 0.75rem 1.1rem 1.1rem; }
.product-thumb {
  width: 72px; height: 72px; object-fit: cover;
  border-radius: 8px; border: 1px solid var(--line);
}
.stack-sm > * + * { margin-top: 0.75rem; }