/* === FileScope Styles === */
:root {
  --bg: #0a0a0f;
  --surface: #14141f;
  --border: #2a2a3a;
  --text: #e8e8f0;
  --dim: #8888a0;
  --accent: #4f8cff;
  --danger: #ff4f6a;
  --success: #4fff8c;
  --warning: #ffb84f;
  --radius: 12px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

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

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

/* Header */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
header h1 {
  font-size: 1.3rem;
  font-weight: 700;
  white-space: nowrap;
}
.header-subtitle { font-weight: 400; color: var(--dim); font-size: 0.9rem; }
.header-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  font-family: var(--font);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { opacity: 0.85; }

/* Landing */
.landing {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 40px 24px;
}
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 80px 60px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  max-width: 600px;
  width: 100%;
  background: var(--surface);
}
.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--accent);
  background: rgba(79,140,255,0.05);
}
.drop-icon { font-size: 3rem; margin-bottom: 16px; }
.drop-zone h2 { font-size: 1.3rem; margin-bottom: 8px; }
.dim { color: var(--dim); }
.small { font-size: 0.85rem; }
.init-status {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--dim);
  font-size: 0.9rem;
}
.init-status.ready { color: var(--success); }

/* Spinner */
.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.spinner.large { width: 40px; height: 40px; border-width: 3px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Loading */
.loading-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  gap: 16px;
  padding: 40px 24px;
}
.progress-bar-wrap {
  width: 300px;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.3s;
  border-radius: 3px;
}

/* Tabs */
.tab-bar {
  display: flex;
  gap: 4px;
  padding: 0 24px;
  max-width: 1400px;
  margin: 0 auto;
  position: sticky;
  top: 56px;
  background: var(--bg);
  z-index: 90;
  padding-top: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.tab {
  padding: 10px 20px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--dim);
  font-size: 0.9rem;
  cursor: pointer;
  font-family: var(--font);
  font-weight: 500;
  white-space: nowrap;
  transition: all 0.2s;
}
.tab:hover { color: var(--text); }
.tab.active { background: var(--surface); border-color: var(--border); color: var(--accent); }
.tab-content { display: none; max-width: 1400px; margin: 0 auto; padding: 24px; }
.tab-content.active { display: block; animation: fadeIn 0.3s; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s;
}
.card:hover { border-color: #3a3a5a; }
.card h3 { font-size: 1rem; margin-bottom: 16px; color: var(--text); }
.cards-row {
  display: grid;
  gap: 16px;
  margin-bottom: 24px;
}
.cards-row.two-col { grid-template-columns: 1fr 1fr; }
.cards-row.four-col { grid-template-columns: repeat(4, 1fr); }

/* Summary cards */
.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-align: center;
}
.summary-card .value { font-size: 1.8rem; font-weight: 700; color: var(--accent); }
.summary-card .label { font-size: 0.8rem; color: var(--dim); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.5px; }

/* Chart containers */
.chart-container { width: 100%; height: 300px; }
.chart-container.tall { height: 400px; }
.chart-container.square { height: 500px; min-height: 400px; }

/* Column cards */
.columns-container { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(500px, 1fr)); }
.column-card { animation: fadeIn 0.3s; }
.column-card .col-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.column-card .col-name { font-size: 1rem; font-weight: 600; }
.type-badge {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.type-badge.numeric { background: rgba(79,140,255,0.15); color: var(--accent); }
.type-badge.categorical { background: rgba(255,184,79,0.15); color: var(--warning); }
.type-badge.boolean { background: rgba(79,255,140,0.15); color: var(--success); }
.type-badge.date { background: rgba(255,79,106,0.15); color: var(--danger); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 8px;
  margin-bottom: 16px;
}
.stat-item {
  background: rgba(255,255,255,0.03);
  padding: 8px 10px;
  border-radius: 6px;
}
.stat-item .stat-label { font-size: 0.7rem; color: var(--dim); text-transform: uppercase; }
.stat-item .stat-value { font-size: 0.9rem; font-weight: 600; }

.missing-bar-wrap {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 8px;
}
.missing-bar {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s;
}
.missing-label { font-size: 0.75rem; color: var(--dim); margin-top: 4px; }

.col-chart { width: 100%; height: 250px; margin-top: 12px; overflow: hidden; }

/* Column filters */
.column-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--dim);
  cursor: pointer;
  font-size: 0.85rem;
  font-family: var(--font);
  transition: all 0.2s;
}
.filter-btn:hover { border-color: var(--accent); color: var(--text); }
.filter-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* Table */
.table-wrap { overflow-x: auto; max-height: 600px; overflow-y: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  white-space: nowrap;
}
.data-table th {
  position: sticky;
  top: 0;
  background: var(--surface);
  padding: 10px 14px;
  text-align: left;
  border-bottom: 2px solid var(--border);
  cursor: pointer;
  user-select: none;
  z-index: 1;
}
.data-table th:hover { color: var(--accent); }
.data-table th .sort-arrow { font-size: 0.7rem; margin-left: 4px; }
.data-table td {
  padding: 8px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.data-table tr:hover td { background: rgba(255,255,255,0.02); }
.data-table .type-badge { font-size: 0.6rem; margin-left: 6px; vertical-align: middle; }
.data-table .null-val { color: var(--dim); font-style: italic; }

/* Structure tab */
.structure-table { font-size: 0.8rem; }
.structure-table th { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.3px; }
.structure-table .col-group-start td { border-top: 2px solid var(--border); }
.truncate-cell { max-width: 150px; overflow: hidden; text-overflow: ellipsis; }

#tab-structure .card { margin-bottom: 20px; }
#tab-structure .cards-row { margin-bottom: 20px; }

.recommendation {
  padding: 16px 20px;
  border-radius: 8px;
  margin-bottom: 12px;
  border-left: 4px solid var(--dim);
  background: rgba(255,255,255,0.02);
}
.recommendation.red { border-left-color: var(--danger); background: rgba(255,79,106,0.05); }
.recommendation.yellow { border-left-color: var(--warning); background: rgba(255,184,79,0.05); }
.recommendation.green { border-left-color: var(--success); background: rgba(79,255,140,0.05); }
.rec-header { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; font-size: 0.95rem; }
.rec-icon { font-size: 1.1rem; }
.recommendation p { font-size: 0.85rem; color: var(--dim); margin-top: 4px; }
.rec-action { color: var(--accent) !important; font-weight: 500; }

.rg-bar { height: 8px; border-radius: 4px; background: var(--accent); transition: width 0.3s; }

/* Lance */
.lance-badge {
  background: rgba(255,159,67,0.15);
  color: #ff9f43;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.schema-tree { margin: 0; padding: 0; list-style: none; }
.schema-tree .field-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 0.85rem;
}
.schema-tree .field-row:hover { background: rgba(255,255,255,0.02); }
.schema-tree .field-name { font-weight: 600; min-width: 150px; }
.schema-tree .field-type { color: var(--accent); min-width: 120px; }
.schema-tree .field-logical { color: var(--warning); min-width: 150px; font-family: monospace; font-size: 0.8rem; }
.schema-tree .field-nullable { color: var(--dim); font-size: 0.75rem; }
.lance-info-msg {
  padding: 40px 24px;
  text-align: center;
  color: var(--dim);
  font-size: 0.95rem;
}
.lance-info-msg .icon { font-size: 2rem; margin-bottom: 12px; }

/* Footer */
footer {
  text-align: center;
  padding: 32px 24px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

/* Responsive */
@media (max-width: 900px) {
  .cards-row.two-col, .cards-row.four-col { grid-template-columns: 1fr; }
  .columns-container { grid-template-columns: 1fr; }
  .chart-container.square { height: 350px; }
}
#chart-file-tree {
  min-height: 400px;
  max-height: 800px;
}
#structure-tree-card {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--surface) 0%, rgba(79,140,255,0.05) 100%);
}

@media (max-width: 600px) {
  .drop-zone { padding: 40px 24px; }
  header h1 { font-size: 1.1rem; }
  .header-subtitle { display: none; }
  .tab { padding: 8px 14px; font-size: 0.8rem; }
  .tab-bar { top: 50px; }
}