:root {
  --bg: #e8ecef;
  --sidebar: #1f2a32;
  --sidebar-text: #eef2f5;
  --sidebar-muted: #9aa8b3;
  --panel: #27343e;
  --border: #3a4a56;
  --accent: #2f7d6d;
  --accent-hover: #266557;
  --danger: #b54848;
  --danger-hover: #953b3b;
  --input-bg: #152028;
  --warning: #e8b86d;
  --sheet-shadow: 0 8px 28px rgba(20, 30, 40, 0.28);
  --font-ui: "Segoe UI", system-ui, sans-serif;
}

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

html,
body {
  margin: 0;
  height: 100%;
  font-family: var(--font-ui);
  background: var(--bg);
  color: #1a242c;
}

.app {
  display: grid;
  grid-template-columns: minmax(300px, 360px) 1fr;
  height: 100vh;
  overflow: hidden;
}

.sidebar {
  background: var(--sidebar);
  color: var(--sidebar-text);
  overflow-y: auto;
  padding: 0.55rem 0.75rem 0.75rem;
  border-right: 1px solid #141c22;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
  margin-bottom: 0.45rem;
}

.panel h2 {
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--sidebar-muted);
  font-weight: 600;
}

.project-name-row {
  display: grid;
  gap: 0.3rem;
  margin-bottom: 0.65rem;
}

.field-grid label {
  font-size: 0.75rem;
  color: var(--sidebar-muted);
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.28rem 0.5rem;
  align-items: center;
}

.field-pair {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem 0.55rem;
}

.field-compact {
  display: grid;
  gap: 0.25rem;
}

.field-grid input,
.field-grid select,
.project-name-row input,
#namesInput {
  width: 100%;
  background: var(--input-bg);
  color: var(--sidebar-text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.28rem 0.4rem;
  font: inherit;
  font-size: 0.85rem;
}

.field-grid input {
  width: 5.5rem;
  justify-self: end;
}

.field-compact input {
  width: 100%;
  justify-self: stretch;
}

.field-grid select {
  width: 9.5rem;
  justify-self: end;
}

#namesInput {
  resize: vertical;
  min-height: 5.5rem;
  max-height: 28vh;
  line-height: 1.3;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.4rem;
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: #31424e;
  color: var(--sidebar-text);
  border-radius: 5px;
  padding: 0.4rem 0.65rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.btn .icon {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  fill: currentColor;
}

.btn:hover {
  background: #3b4f5d;
}

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

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

.btn-danger {
  background: var(--danger);
  border-color: transparent;
}

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

.btn-ghost {
  background: transparent;
  border-color: transparent;
}

.btn-ghost .icon {
  width: 1.15em;
  height: 1.15em;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: var(--sidebar-muted);
  cursor: pointer;
}

.hint {
  margin: 0.25rem 0 0.3rem;
  font-size: 0.72rem;
  color: var(--sidebar-muted);
  line-height: 1.3;
}

.hint code {
  font-family: "Consolas", "Courier New", monospace;
  font-size: 0.9em;
  background: var(--input-bg);
  padding: 0.05em 0.3em;
  border-radius: 3px;
  color: #d7e2ea;
}

#overflowWarning {
  color: var(--warning);
  font-weight: 500;
}

.preview-area {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background:
    radial-gradient(circle at 20% 10%, #f4f7f9 0, transparent 45%),
    linear-gradient(160deg, #d9e0e6, #c8d2da 60%, #b8c4ce);
}

.project-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem 0.75rem;
  border-bottom: 1px solid #141c22;
  background: var(--sidebar);
  color: var(--sidebar-text);
}

.project-header-main {
  flex: 1;
  min-width: 0;
}

.project-title {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: 0.02em;
  color: var(--sidebar-text);
}

.project-header-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  margin-bottom: 0.65rem;
}

.project-header .project-name-row {
  margin-bottom: 0;
  flex: 1 1 220px;
  max-width: 360px;
}

.project-header .project-name-row input {
  background: var(--input-bg);
  color: var(--sidebar-text);
  border: 1px solid var(--border);
}

.preview-meta {
  font-size: 0.82rem;
  color: var(--sidebar-muted);
  align-self: center;
}

.project-header .project-actions {
  margin-bottom: 0;
}

.project-header .btn {
  color: var(--sidebar-text);
  background: #31424e;
  border-color: var(--border);
}

.project-header .btn:hover {
  background: #3b4f5d;
}

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

.project-header .btn-primary:hover {
  background: var(--accent-hover);
}

.project-header .btn-danger {
  color: #fff;
  background: var(--danger);
  border-color: transparent;
}

.project-header .btn-danger:hover {
  background: var(--danger-hover);
}

.preview-viewport {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 1.5rem;
}

.sheet {
  background: #fff;
  box-shadow: var(--sheet-shadow);
  position: relative;
  flex-shrink: 0;
  transform-origin: top center;
}

.labels-grid {
  display: grid;
  width: 100%;
  height: 100%;
}

.label-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
  padding: 0;
  box-sizing: border-box;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
  color-adjust: exact;
}

.label-cell.with-cut-guide {
  border: 1px dashed #444;
}

.label-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-sizing: border-box;
  padding: 0.4mm 0.8mm;
  border: 1px solid #666;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
  color-adjust: exact;
}

.label-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
  max-height: 100%;
  line-height: 1.15;
  gap: 0.15em;
}

.label-line {
  display: block;
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: clip;
}

.modal {
  border: none;
  border-radius: 10px;
  padding: 0;
  width: min(480px, 92vw);
  max-height: 80vh;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}

.modal::backdrop {
  background: rgba(15, 22, 28, 0.55);
}

.modal-content {
  margin: 0;
  padding: 0;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid #dde3e8;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.projects-list {
  padding: 0.5rem;
  overflow-y: auto;
  max-height: 55vh;
}

.project-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 0.75rem;
  align-items: center;
  padding: 0.65rem 0.7rem;
  border-radius: 6px;
  border: 1px solid #e2e8ed;
  margin-bottom: 0.45rem;
}

.project-item:hover {
  background: #f4f7f9;
}

.project-item-info strong {
  display: block;
  font-size: 0.95rem;
}

.project-item-info span {
  font-size: 0.78rem;
  color: #667788;
}

.project-item-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  justify-content: flex-end;
}

.project-item .btn {
  color: #1a242c;
  background: #eef2f5;
  border-color: #cdd6dd;
}

.project-item .btn:hover {
  background: #e0e7ec;
}

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

.project-item .btn-danger {
  color: #fff;
  background: var(--danger);
  border-color: transparent;
}

#projectsEmpty {
  padding: 1rem;
  text-align: center;
  color: #667788;
}

@media (max-width: 860px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    height: auto;
    min-height: 100vh;
    overflow: visible;
  }

  .sidebar {
    max-height: none;
  }

  .preview-viewport {
    min-height: 70vh;
  }
}

@media print {
  @page {
    size: A4;
    margin: 0;
  }

  html,
  body {
    background: #fff;
    height: auto;
    overflow: visible;
  }

  .sidebar,
  .project-header,
  .modal,
  dialog {
    display: none !important;
  }

  .app {
    display: block;
    height: auto;
    overflow: visible;
  }

  .preview-area {
    background: none;
    display: block;
  }

  .preview-viewport {
    display: block;
    padding: 0;
    overflow: visible;
  }

  .sheet {
    box-shadow: none !important;
    transform: none !important;
    margin: 0 !important;
    page-break-after: avoid;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    color-adjust: exact;
  }

  .label-cell {
    overflow: visible !important;
  }

  .label-frame {
    border: 1pt solid #000 !important;
  }

  .label-cell.with-cut-guide {
    border: 1pt dashed #000 !important;
  }
}