:root {
  --bg: #f4f5f7; --fg: #1f2933; --muted: #7b8794; --line: #d9dde3; --head: #1f497d; --accent: #4f81bd;
  --we: #dadada; --today: #fff2b3; --work: #355e92; --span: #9dc3e6; --danger: #c0392b; --ok: #2e8b57;
}
* { box-sizing: border-box; }
body { margin: 0; font: 13px/1.35 "Segoe UI", system-ui, sans-serif; color: var(--fg); background: var(--bg); }
.topbar { background: var(--head); color: #fff; padding: 6px 12px; display: flex; flex-wrap: wrap; gap: 4px 16px; align-items: center; position: sticky; top: 0; z-index: 50; }
.topbar h1 { font-size: 16px; margin: 0; font-weight: 600; }
#tabs { display: flex; flex-wrap: wrap; gap: 2px; }
#tabs button { background: transparent; border: 0; color: #cfe0f5; padding: 6px 12px; cursor: pointer; border-radius: 4px 4px 0 0; font: inherit; }
#tabs button:hover { background: rgba(255,255,255,.12); }
#tabs button.active { background: var(--bg); color: var(--head); font-weight: 600; }
.toast { margin-left: auto; background: #2e8b57; padding: 4px 10px; border-radius: 4px; }
.toast.error { background: var(--danger); }
main { padding: 10px 12px 40px; }
.tab { display: none; }
.tab.active { display: block; }

.toolbar { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; margin-bottom: 8px; }
.toolbar label { display: flex; gap: 4px; align-items: center; }
input, select, button { font: inherit; }
input, select { border: 1px solid var(--line); border-radius: 3px; padding: 3px 5px; background: #fff; }
button { border: 1px solid var(--line); background: #fff; border-radius: 3px; padding: 3px 9px; cursor: pointer; }
button:hover { background: #eef2f7; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { background: #3f6ca1; }
button.danger { color: var(--danger); border-color: var(--danger); }
button.small { padding: 1px 6px; font-size: 12px; }
.muted { color: var(--muted); }
.nowrap { white-space: nowrap; }
.chip { min-width: 28px; font-weight: 600; border: 2px solid transparent; }
.chip.sel { border-color: #222; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 10px 12px; margin-bottom: 12px; }
.card h2 { font-size: 14px; margin: 0 0 8px; display: flex; gap: 10px; align-items: center; }
h3 { margin: 10px 0 4px; font-size: 13px; }
.two-col { display: grid; grid-template-columns: minmax(280px, 400px) 1fr; gap: 12px; align-items: start; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 12px; align-items: start; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }