:root {
  color-scheme: light;
  --bg: #f2f6fb;
  --panel: #ffffff;
  --line: #d4deea;
  --text: #112036;
  --muted: #5a6d86;
  --primary: #145fc4;
  --primary-soft: #e8f1ff;
  --success: #1f7a42;
  --success-soft: #e9f8ef;
  --danger: #b63434;
  --danger-soft: #fdecec;
  --shadow: 0 8px 24px rgba(16, 42, 75, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: linear-gradient(170deg, #e8f1ff 0%, var(--bg) 55%);
  color: var(--text);
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  box-shadow: var(--shadow);
}

.panel.block {
  margin: 14px 0;
}

.danger {
  background: var(--danger-soft);
  border-color: #f6bdbd;
  color: #7d1616;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 12px;
}

h1, h2, h3 {
  margin: 0;
}

h1 {
  margin-bottom: 8px;
}

h3 {
  margin-bottom: 10px;
  font-size: 16px;
}

.muted {
  color: var(--muted);
  margin: 8px 0 0;
  font-size: 14px;
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 10px;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: end;
  flex-wrap: wrap;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.tab {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 600;
  cursor: pointer;
}

.tab.active {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.form-grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

label {
  display: block;
}

label > span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

input, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 10px;
  font: inherit;
  color: var(--text);
  background: white;
}

input:focus, select:focus {
  outline: 2px solid #bfd8ff;
  border-color: var(--primary);
}

.btn {
  border: 1px solid var(--line);
  background: #ffffff;
  border-radius: 999px;
  padding: 9px 14px;
  font-weight: 600;
  cursor: pointer;
}

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

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

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.supplier-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-top: 12px;
  overflow: hidden;
}

.supplier-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, #f5f9ff 0%, #f7fcf9 100%);
}

.supplier-name {
  font-weight: 700;
}

.supplier-stats {
  font-size: 12px;
  color: var(--muted);
}

.site-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.site-col {
  border-right: 1px solid var(--line);
  min-height: 70px;
}

.site-col:last-child {
  border-right: 0;
}

.site-col h4 {
  margin: 0;
  padding: 8px 10px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  background: #fbfdff;
}

.site-list {
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.item-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  background: #fff;
}

.item-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}

.item-name {
  font-weight: 600;
  font-size: 14px;
}

.item-meta {
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}

.item-controls {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.badge {
  border-radius: 999px;
  font-size: 11px;
  padding: 4px 8px;
  font-weight: 700;
  white-space: nowrap;
}

.badge.pending {
  background: #fff3d8;
  color: #7e5a00;
}

.badge.ordered {
  background: #e9f3ff;
  color: #0f4f8e;
}

.priority-now {
  color: #b63434;
  font-weight: 700;
}

.priority-1month {
  color: #8a6600;
  font-weight: 700;
}

.priority-2months {
  color: #1f7a42;
  font-weight: 700;
}

.inline-check {
  margin-right: 6px;
}

.empty {
  padding: 14px;
  color: var(--muted);
  font-size: 13px;
}

.hidden {
  display: none !important;
}

@media (max-width: 980px) {
  .form-grid.four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-grid {
    grid-template-columns: 1fr;
  }
  .site-col {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .site-col:last-child {
    border-bottom: 0;
  }
}