:root {
  --label-width: 240px;
  --week-width: 90px;
  --row-height: 34px;
  --print-scale: 1;

  color-scheme: light;
  --surface:        #fcfcfb;
  --page:           #f9f9f7;
  --panel-alt:      #f1f1ee;
  --border:         #e1e0d9;
  --text:           #0b0b0b;
  --muted-text:     #52514e;
  --faint-text:     #898781;
  --baseline:       #c3c2b7;
  --accent:         #2a78d6;   /* series-1: Roadmap-DB */
  --accent-2:       #eb6834;   /* series-2: Schedule-A-DB v2 */
  --danger:         #d03b3b;
  --success:        #006300;
  --hover-bg:        #eceae2;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --surface:        #1a1a19;
    --page:           #0d0d0d;
    --panel-alt:      #202020;
    --border:         #2c2c2a;
    --text:           #ffffff;
    --muted-text:     #c3c2b7;
    --faint-text:     #898781;
    --baseline:       #383835;
    --accent:         #3987e5;
    --accent-2:       #d95926;
    --danger:         #e66767;
    --success:        #0ca30c;
    --hover-bg:       #242423;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --surface:        #1a1a19;
  --page:           #0d0d0d;
  --panel-alt:      #202020;
  --border:         #2c2c2a;
  --text:           #ffffff;
  --muted-text:     #c3c2b7;
  --faint-text:     #898781;
  --baseline:       #383835;
  --accent:         #3987e5;
  --accent-2:       #d95926;
  --danger:         #e66767;
  --success:        #0ca30c;
  --hover-bg:       #242423;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  padding-top: 34px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--page);
  color: var(--text);
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-wrap: wrap;
  gap: 10px;
  flex: 0 0 auto;
}

.topbar h1 {
  font-size: 18px;
  margin: 0;
  font-weight: 600;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.file-status { font-size: 12px; color: var(--muted-text); }
.file-status.connected { color: var(--success); }
.file-status.error { color: var(--danger); }

.save-status { font-size: 12px; color: var(--muted-text); min-width: 60px; text-align: right; }
.save-status.saving { color: var(--accent); }
.save-status.error { color: var(--danger); }

.legend {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--muted-text);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-swatch {
  display: inline-block;
  width: 20px;
  height: 10px;
}

.legend-swatch-bar {
  background: var(--accent);
  border-radius: 3px;
}

.legend-swatch-line {
  position: relative;
  height: 2px;
  margin: 4px 0;
  background: var(--accent-2);
}

.legend-swatch-line::before,
.legend-swatch-line::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 2px var(--surface);
  transform: translate(-50%, -50%);
}

.legend-swatch-line::before { left: 0; }
.legend-swatch-line::after { left: 100%; }

.btn {
  border: 1px solid var(--border);
  background: var(--panel-alt);
  color: var(--text);
  padding: 7px 12px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}

.btn:hover { border-color: var(--accent); }

.btn.active {
  border-color: var(--accent);
  color: var(--accent);
}

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

.zoom-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.zoom-btn {
  background: var(--panel-alt);
  color: var(--text);
  border: none;
  width: 28px;
  height: 30px;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}

.zoom-btn:hover:not(:disabled) { background: var(--hover-bg); }
.zoom-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.zoom-level {
  font-size: 12px;
  color: var(--muted-text);
  padding: 0 8px;
  min-width: 40px;
  text-align: center;
  user-select: none;
}

.compare-wrap {
  padding: 0 24px 24px;
  overflow: hidden;
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.empty-state {
  padding: 60px 24px;
  text-align: center;
  color: var(--muted-text);
}

.empty-state code {
  background: var(--panel-alt);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.table-scroll {
  overflow: auto;
  flex: 1 1 auto;
  min-height: 0;
  margin-top: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.table-inner {
  position: relative;
}

.today-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 0;
  border-left: 2px dotted var(--faint-text);
  z-index: 6;
  pointer-events: none;
}

.compare-table {
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
}

.compare-table thead th {
  position: sticky;
  top: 0;
  z-index: 4;
  background: var(--panel-alt);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  text-align: left;
  padding: 0;
}

.month-row th {
  height: 22px;
  font-size: 11px;
  color: var(--faint-text);
  padding: 0 6px;
  border-right: 1px solid var(--border);
  white-space: nowrap;
  overflow: hidden;
}

.week-row th {
  top: 22px;
  height: 30px;
  font-size: 11px;
  color: var(--muted-text);
  padding: 0 6px;
  border-right: 1px solid var(--border);
  white-space: nowrap;
  overflow: hidden;
}

th.label-col-header {
  position: sticky;
  left: 0;
  z-index: 5;
  width: var(--label-width);
  min-width: var(--label-width);
  border-right: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 12px;
  color: var(--muted-text);
  padding: 0 12px;
}

.week-row th.today-col { color: var(--accent); font-weight: 700; }

.label-cell {
  position: sticky;
  left: 0;
  z-index: 2;
  width: var(--label-width);
  min-width: var(--label-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 8px 10px;
  vertical-align: top;
}

.project-name-input {
  width: 100%;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 6px;
  border-radius: 4px;
}

.project-name-input:hover,
.project-name-input:focus {
  border-color: var(--border);
  background: var(--panel-alt);
  outline: none;
}

.project-meta {
  margin-top: 4px;
  padding: 0 6px;
  font-size: 11px;
  color: var(--faint-text);
}

.project-meta .badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-alt);
}

.track-row td.track-cell {
  border-bottom: 1px solid var(--border);
}

.track-row.roadmap-row td.track-cell { border-bottom: none; }

.track-cell {
  position: relative;
  height: var(--row-height);
  padding: 0;
}

.row-sub-label {
  position: absolute;
  left: 8px;
  top: 3px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--faint-text);
  pointer-events: none;
  z-index: 1;
}

.rm-bar {
  position: absolute;
  top: 8px;
  height: 18px;
  border-radius: 4px;
  background: var(--accent);
  box-shadow: 0 0 0 2px var(--surface);
}

.sched-line {
  position: absolute;
  top: 50%;
  height: 2px;
  margin-top: -1px;
  background: var(--accent-2);
}

.sched-line::before,
.sched-line::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 2px var(--surface);
  transform: translate(-50%, -50%);
}

.sched-line::before { left: 0; }
.sched-line::after { left: 100%; }

.missing-note {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 8px;
  display: flex;
  align-items: center;
  font-size: 11px;
  font-style: italic;
  color: var(--faint-text);
  white-space: nowrap;
}

.edit-dialog {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  width: 360px;
  max-width: 90vw;
}

.edit-dialog::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.edit-dialog h2 {
  margin: 0 0 8px;
  font-size: 16px;
}

.edit-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 14px;
}

.filter-hint {
  margin: 0 0 14px;
  font-size: 12px;
  color: var(--muted-text);
}

.filter-actions-row {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.filter-project-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 320px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px;
}

.filter-check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}

.filter-check-row:hover { background: var(--hover-bg); }

.filter-check-row input[type="checkbox"] {
  width: 15px;
  height: 15px;
  accent-color: var(--accent);
  cursor: pointer;
}

.filter-empty {
  font-size: 12px;
  color: var(--muted-text);
  padding: 6px 8px;
}

@media print {
  .topbar, #empty-state { display: none !important; }
  .compare-wrap { padding: 0; overflow: visible; height: auto; }
  .table-scroll { border: none; overflow: visible; }
}