:root {
  color-scheme: dark;
  --bg: #0d0d0d;
  --surface: #1a1a19;
  --surface-hover: #232322;
  --border: rgba(255, 255, 255, 0.10);
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --grid: #2c2c2a;
  --baseline: #383835;
  --good: #0ca30c;
  --critical: #e66767;
  --blue: #3987e5;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

body { min-height: 100vh; }

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

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.navbar .brand {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.2px;
}

.navbar .brand .sub {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 13px;
  margin-left: 8px;
}

.navbar nav a {
  color: var(--text-secondary);
  margin-left: 20px;
  font-size: 14px;
}

.navbar nav a.active { color: var(--text-primary); }

.page {
  max-width: 1320px;
  margin: 0 auto;
  padding: 24px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.6px;
  font-size: 11px;
  color: var(--text-muted);
  margin: 0 0 4px;
}

h1 { font-size: 26px; margin: 0 0 4px; }
.subtitle { color: var(--text-muted); font-size: 13px; margin: 0 0 24px; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 20px;
}

.panel-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.stat-label {
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 24px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.stat-value.good { color: var(--good); }
.stat-value.critical { color: var(--critical); }

.stat-sub {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.chart-wrap { position: relative; height: 320px; }
.chart-wrap.short { height: 220px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

thead th {
  text-align: left;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

thead th:hover { color: var(--text-secondary); }
thead th.sorted { color: var(--text-primary); }
thead th .arrow { font-size: 10px; margin-left: 3px; opacity: 0.7; }

tbody td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--grid);
  white-space: nowrap;
}

tbody tr:hover { background: var(--surface-hover); }

.pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.pill.trade { background: rgba(57, 135, 229, 0.15); color: var(--blue); }
.pill.balance_adjustment { background: rgba(200, 200, 200, 0.12); color: var(--text-secondary); }
.pill.buy { background: rgba(12, 163, 12, 0.15); color: var(--good); }
.pill.sell { background: rgba(230, 103, 103, 0.15); color: var(--critical); }
.pill.uploaded { background: rgba(57, 135, 229, 0.15); color: var(--blue); }
.pill.processed { background: rgba(12, 163, 12, 0.15); color: var(--good); }
.pill.failed { background: rgba(230, 103, 103, 0.15); color: var(--critical); }

.good-text { color: var(--good); }
.critical-text { color: var(--critical); }
.muted { color: var(--text-muted); }

.table-toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

select, button, input[type="text"] {
  background: #141413;
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  font-family: inherit;
}

button {
  cursor: pointer;
  background: #232322;
}

button:hover:not(:disabled) { background: #2c2c2a; }
button:disabled { opacity: 0.4; cursor: not-allowed; }

button.primary {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
  font-weight: 600;
}

button.primary:hover:not(:disabled) { background: #2f6fc2; }

.pagination {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* Calendar heatmap */
.cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.cal-header .month-label { font-weight: 600; font-size: 14px; min-width: 130px; text-align: center; }

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.cal-dow {
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  padding-bottom: 4px;
}

.cal-cell {
  border-radius: 8px;
  padding: 8px;
  min-height: 64px;
  border: 1px solid var(--border);
  background: #141413;
}

.cal-cell.empty { border: none; background: transparent; }

.cal-cell .day-num { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.cal-cell .day-pl { font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; }
.cal-cell .day-trades { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* Upload page */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone.dragover { border-color: var(--blue); background: rgba(57, 135, 229, 0.06); }
.dropzone .hint { font-size: 12px; color: var(--text-muted); margin-top: 8px; }

.step {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
}

.status-msg { margin-top: 14px; padding: 12px 14px; border-radius: 8px; font-size: 13px; }
.status-msg.error { background: rgba(230, 103, 103, 0.12); color: var(--critical); border: 1px solid rgba(230, 103, 103, 0.3); }
.status-msg.success { background: rgba(12, 163, 12, 0.10); color: var(--good); border: 1px solid rgba(12, 163, 12, 0.3); }
.status-msg.info { background: rgba(57, 135, 229, 0.10); color: var(--blue); border: 1px solid rgba(57, 135, 229, 0.3); }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

/* Portfolio page */
.scope-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.scope-row label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.scope-row select,
.scope-row input[type="date"] {
  font-size: 13px;
  text-transform: none;
  letter-spacing: normal;
  color: var(--text-primary);
}

.panel hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 560px;
  max-width: 92vw;
  max-height: 82vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}

.modal-header button {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  padding: 0 4px;
}

.modal-body {
  padding: 16px 18px;
  overflow-y: auto;
}

.portfolio-row {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  margin-top: 12px;
}

.portfolio-row-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.portfolio-row-header input[type="text"] {
  flex: 1;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #141413;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 12px;
}

.chip button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  font-size: 13px;
}

.chip button:hover { color: var(--critical); }

.add-account-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}

/* Breakdown section */
.breakdown-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.tab-group {
  display: inline-flex;
  gap: 4px;
  background: #141413;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
}

.tab-btn {
  background: none;
  border: none;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
}

.tab-btn.active {
  background: var(--blue);
  color: #fff;
  font-weight: 600;
}

.breakdown-charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

@media (max-width: 800px) {
  .breakdown-charts { grid-template-columns: 1fr; }
}

.chart-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.breakdown-table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 600;
}

.account-cell {
  cursor: pointer;
}

.account-cell:hover { text-decoration: underline dotted; }
.account-cell .account-number { display: block; font-size: 11px; color: var(--text-muted); }

/* IoT dashboard */
.project-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 12px;
  cursor: pointer;
  color: inherit;
  text-decoration: none;
}
.project-card:hover { background: var(--surface-hover); text-decoration: none; }
.project-card-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.project-card .project-name { font-weight: 600; font-size: 15px; }
.project-card .project-dates { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  white-space: nowrap;
}
.status-badge .dot { width: 7px; height: 7px; border-radius: 50%; }
.status-badge.connected { background: rgba(12, 163, 12, 0.15); color: var(--good); }
.status-badge.connected .dot { background: var(--good); }
.status-badge.offline { background: rgba(230, 103, 103, 0.15); color: var(--critical); }
.status-badge.offline .dot { background: var(--critical); }

.auth-widget { display: flex; align-items: center; gap: 10px; }
.master-pill {
  background: rgba(57, 135, 229, 0.15);
  color: var(--blue);
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}
.viewer-pill {
  color: var(--text-muted);
  font-size: 12px;
}

.api-key-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #141413;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 13px;
  word-break: break-all;
}
.api-key-box button { flex-shrink: 0; }

.device-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--grid);
}
.device-row:last-child { border-bottom: none; }
.device-row .device-name { font-weight: 600; font-size: 13px; }
.device-row .device-sub { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.reading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid var(--grid);
  font-size: 13px;
}
.reading-row .reading-type { color: var(--text-secondary); }
.reading-row .reading-meta { color: var(--text-muted); font-size: 11px; }

.file-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--grid);
  font-size: 13px;
}
.file-row .filename { font-family: 'SFMono-Regular', Consolas, monospace; }

.reading-chart-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  align-items: center;
}
@media (max-width: 800px) {
  .reading-chart-grid { grid-template-columns: 1fr; gap: 12px; }
}

.gauge-canvas-wrap {
  position: relative;
  height: 160px;
  max-width: 220px;
  margin: 4px auto 0;
}
.gauge-range {
  display: flex;
  justify-content: space-between;
  max-width: 220px;
  margin: 0 auto;
  padding: 0 14px;
  font-size: 11px;
  color: var(--text-muted);
}