:root {
  --bg: #f5f5f7;
  --text: #1d1d1f;
  --muted: #86868b;
  --card: #ffffff;
  --hover: #f0f0f5;
  --border: #e5e5ea;
  --accent: #0071e3;
  --warning: #ff9500;
  --success: #34c759;
  --danger: #ff3b30;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #1c1c1e;
  --text: #f5f5f7;
  --muted: #98989f;
  --card: #2c2c2e;
  --hover: #3a3a3c;
  --border: #38383a;
  --accent: #0a84ff;
  --warning: #ff9f0a;
  --success: #30d158;
  --danger: #ff453a;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  font-size: 14px;
}

.app { max-width: 1200px; margin: 0 auto; padding: 24px; }

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}
.brand {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}
.tabs {
  display: flex;
  gap: 4px;
  margin-left: 16px;
}
.tab {
  background: transparent;
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
}
.tab:hover { background: var(--hover); }
.tab.is-active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}
.employee-filter {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  margin-left: 12px;
  max-width: 200px;
}
.topbar-actions { margin-left: auto; display: flex; gap: 8px; }
.btn-add, .btn-theme {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
}
.btn-add:hover, .btn-theme:hover { background: var(--hover); }
.btn-theme { padding: 6px 10px; font-size: 14px; }

.lanes { display: flex; flex-direction: column; gap: 32px; }
.lane h2 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--muted);
  margin: 0 0 10px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.lane h2 .lane-count {
  font-size: 11px;
  background: var(--hover);
  padding: 1px 8px;
  border-radius: 999px;
  font-weight: 600;
}
.lane h2 .period-label {
  text-transform: none;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted);
}
.lane[data-lane="needs_attention"] h2 { color: var(--warning); }
.lane[data-lane="needs_attention"] h2 .lane-count {
  background: var(--warning);
  color: white;
}
.lane-collapsed h2 { cursor: pointer; }
.lane-collapsed h2::after { content: " ▸"; }
.lane:not(.lane-collapsed) h2[data-collapsible]::after { content: " ▾"; }
.lane-collapsed .rows { display: none; }

/* Week sub-headers inside the Active lane */
.group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  margin: 16px 2px 8px;
}
.group-header:first-child { margin-top: 2px; }
.group-header.is-current { color: var(--accent); }
.group-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #fff;
  background: var(--accent);
  padding: 2px 8px;
  border-radius: 999px;
}

.row {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 16px;
  margin-bottom: 6px;
  display: grid;
  grid-template-columns: 1.4fr 1.4fr 0.7fr 0.9fr auto;
  align-items: center;
  gap: 14px;
  transition: opacity 0.2s;
}
.row.is-done { opacity: 0.45; }
.row .employee { font-weight: 600; }
.row .dates { color: var(--muted); font-size: 13px; }
.row .amount {
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--muted);
}
.row .type-chip {
  display: inline-block;
  background: var(--hover);
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  width: fit-content;
}
.row .checkboxes { display: flex; gap: 6px; }
.row .checkbox {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  user-select: none;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  transition: all 0.15s;
  min-width: 64px;
  justify-content: center;
}
.row .checkbox:hover { background: var(--hover); }
.row .checkbox.is-checked {
  background: var(--success);
  color: white;
  border-color: var(--success);
}

.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.row-actions button {
  background: transparent;
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
  color: var(--text);
  font-size: 12px;
  font-weight: 500;
  transition: all 0.15s;
}
.row-actions button:hover { background: var(--hover); }
.row-actions .primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}
.row-actions .primary:hover {
  background: var(--accent);
  opacity: 0.9;
}
.row-actions .danger:hover {
  color: var(--danger);
  border-color: var(--danger);
}

.modal {
  padding: 24px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  min-width: 480px;
  max-width: 90vw;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}
.modal::backdrop { background: rgba(0, 0, 0, 0.4); }
.modal h3 { margin: 0 0 16px 0; font-size: 16px; }
.modal form { display: flex; flex-direction: column; gap: 12px; }
.modal label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}
.modal input, .modal select, .modal textarea {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}
.modal .date-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.modal .date-row {
  display: flex;
  gap: 6px;
}
.modal .date-row input[type="date"] {
  flex: 1;
  min-width: 0;
}
.modal .date-row .date-remove {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 16px;
  line-height: 1;
  width: 36px;
  padding: 0;
  border-radius: 6px;
  cursor: pointer;
}
.modal .date-row .date-remove:hover {
  color: var(--danger);
  border-color: var(--danger);
}
.modal .date-add-btn {
  background: transparent;
  border: 1px dashed var(--border);
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  margin-top: 6px;
  align-self: flex-start;
}
.modal .date-add-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.modal input:focus, .modal select:focus, .modal textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}
.modal .form-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 8px;
}
.modal .form-actions .delete-btn {
  margin-right: auto;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
}
.modal .form-actions .delete-btn:hover {
  color: var(--danger);
  border-color: var(--danger);
}
.modal .form-actions button {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
}
.modal .form-actions .primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}
.modal .source-pre {
  white-space: pre-wrap;
  max-width: 600px;
  max-height: 400px;
  overflow: auto;
  background: var(--bg);
  padding: 12px;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 12px;
  margin: 12px 0;
}
.modal .source-meta {
  color: var(--muted);
  font-size: 12px;
  margin: 0 0 12px 0;
}

.empty-state {
  color: var(--muted);
  font-size: 13px;
  padding: 20px;
  text-align: center;
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: 10px;
}

.footer {
  margin-top: 32px;
  text-align: center;
  color: var(--muted);
  font-size: 11px;
}

@media (max-width: 720px) {
  .app { padding: 16px; }
  .topbar { flex-wrap: wrap; }
  .row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 12px 14px;
  }
  .row .checkboxes { justify-content: flex-start; }
}