:root {
  color-scheme: dark;
  --bg: #09111f;
  --panel: #0f172a;
  --panel-2: #111c31;
  --border: #243248;
  --text: #e5eefc;
  --muted: #93a4bf;
  --accent: #59c2ff;
  --accent-2: #2563eb;
  --danger: #ef4444;
  --success: #22c55e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background: radial-gradient(circle at top, #10203c, var(--bg) 48%);
  color: var(--text);
}

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

button {
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  border-radius: 10px;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
}

button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #08111f;
  border-color: transparent;
}

button.secondary {
  background: transparent;
}

.app-shell {
  display: grid;
  grid-template-columns: 300px 1fr;
  min-height: 100vh;
}

.sidebar {
  border-right: 1px solid var(--border);
  background: rgba(9, 17, 31, 0.88);
  padding: 1.25rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.brand {
  display: flex;
  gap: 0.9rem;
  align-items: center;
  margin-bottom: 1.5rem;
}

.brand p,
.subtitle,
.status,
.field-help,
.cell-status {
  color: var(--muted);
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: #05111f;
  display: grid;
  place-items: center;
  font-weight: 700;
}

.section-title {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 1.25rem 0 0.75rem;
}

.panel,
.cell,
.chart-editor,
.table-shell {
  background: rgba(17, 28, 49, 0.82);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.panel {
  padding: 0.85rem;
}

.panel.small {
  margin-bottom: 0.8rem;
}

.main {
  padding: 1.25rem 1.4rem 2rem;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.toolbar h1 {
  margin: 0 0 0.3rem;
}

.toolbar-actions,
.row-actions,
.cell-actions {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.cells {
  display: grid;
  gap: 1rem;
}

.cell {
  overflow: hidden;
}

.cell-header {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
}

.cell-type {
  display: inline-block;
  min-width: 88px;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.cell-title,
select,
.field input {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(9, 17, 31, 0.8);
  color: var(--text);
}

.cell-title {
  margin-top: 0.35rem;
}

.cell-body {
  padding: 1rem;
}

.cell-source {
  width: 100%;
  min-height: 200px;
  padding: 0.85rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #07101d;
  color: var(--text);
  resize: vertical;
}

.cell-output {
  margin-top: 1rem;
}

.file-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.file-list li {
  padding: 0.42rem 0;
  color: var(--muted);
  border-bottom: 1px solid rgba(36, 50, 72, 0.35);
}

.field {
  margin-top: 0.75rem;
}

.field-label {
  display: block;
  margin-top: 0.6rem;
  margin-bottom: 0.35rem;
  color: var(--muted);
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.chart-editor {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  padding: 0.9rem;
  margin-bottom: 1rem;
}

.chart-card {
  padding: 1rem;
  background: linear-gradient(180deg, rgba(12, 21, 37, 0.98), rgba(17, 28, 49, 0.9));
  border-radius: 14px;
  border: 1px solid var(--border);
}

.kpi-value {
  font-size: 2rem;
  font-weight: 700;
  margin-top: 0.5rem;
}

.bar-row {
  display: grid;
  grid-template-columns: 140px 1fr 90px;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.5rem;
}

.bar-track {
  height: 12px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #8b5cf6);
}

.table-shell {
  overflow: auto;
}

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

th,
td {
  text-align: left;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid rgba(36, 50, 72, 0.6);
}

th {
  color: var(--muted);
  font-size: 0.85rem;
}

.markdown-preview {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(7, 16, 29, 0.7);
  line-height: 1.6;
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3 {
  margin-top: 0;
}

.status.ok {
  color: var(--success);
}

.status.error {
  color: var(--danger);
}

.hidden {
  display: none;
}

@media (max-width: 1100px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .toolbar {
    flex-direction: column;
  }
}