feat: unified calendar view and eisenhower matrix view

static/style.css

@@ -812,6 +812,19 @@ a:hover { color: var(--accent-hover); }
 .focus-title { flex: 1; font-weight: 500; }
 .focus-meta { font-size: 0.78rem; color: var(--muted); }
 
+/* ---- Alerts ---- */
+.alert {
+    padding: 12px 16px;
+    border-radius: var(--radius);
+    font-size: 0.88rem;
+    font-weight: 500;
+}
+.alert-warning {
+    background: var(--amber-soft);
+    color: var(--amber);
+    border: 1px solid var(--amber);
+}
+
 /* ---- Utility ---- */
 .text-muted { color: var(--muted); }
 .text-sm { font-size: 0.82rem; }
@@ -1255,3 +1268,172 @@ a:hover { color: var(--accent-hover); }
 .timer-detail-stop:hover {
     background: var(--red, #ef4444)33;
 }
+
+/* ---- Calendar View ---- */
+.cal-nav {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    margin-bottom: 16px;
+}
+
+.cal-month-label {
+    font-size: 1.15rem;
+    font-weight: 700;
+    min-width: 180px;
+    text-align: center;
+}
+
+.cal-legend {
+    display: flex;
+    gap: 16px;
+    margin-bottom: 12px;
+    font-size: 0.78rem;
+    color: var(--muted);
+}
+
+.cal-legend-item {
+    display: flex;
+    align-items: center;
+    gap: 4px;
+}
+
+.cal-dot {
+    width: 8px;
+    height: 8px;
+    border-radius: 50%;
+    flex-shrink: 0;
+}
+
+.cal-dot-appointment { background: var(--amber); }
+.cal-dot-meeting { background: var(--purple); }
+.cal-dot-task { background: var(--accent); }
+
+.cal-grid {
+    background: var(--surface);
+    border: 1px solid var(--border);
+    border-radius: var(--radius-lg);
+    overflow: hidden;
+}
+
+.cal-header-row {
+    display: grid;
+    grid-template-columns: repeat(7, 1fr);
+    border-bottom: 1px solid var(--border);
+}
+
+.cal-header-cell {
+    padding: 8px;
+    font-size: 0.75rem;
+    font-weight: 600;
+    text-transform: uppercase;
+    letter-spacing: 0.06em;
+    color: var(--muted);
+    text-align: center;
+}
+
+.cal-week-row {
+    display: grid;
+    grid-template-columns: repeat(7, 1fr);
+    min-height: 100px;
+}
+
+.cal-week-row + .cal-week-row {
+    border-top: 1px solid var(--border);
+}
+
+.cal-day-cell {
+    padding: 4px;
+    border-right: 1px solid var(--border);
+    min-height: 100px;
+    display: flex;
+    flex-direction: column;
+}
+
+.cal-day-cell:last-child {
+    border-right: none;
+}
+
+.cal-day-empty {
+    background: var(--surface2);
+    min-height: 100px;
+}
+
+.cal-day-today {
+    background: var(--accent-soft);
+}
+
+.cal-day-num {
+    font-size: 0.78rem;
+    font-weight: 600;
+    color: var(--text-secondary);
+    padding: 2px 4px;
+    text-align: right;
+}
+
+.cal-day-today .cal-day-num {
+    color: var(--accent);
+    font-weight: 700;
+}
+
+.cal-events {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    gap: 2px;
+    overflow: hidden;
+}
+
+.cal-event {
+    display: block;
+    padding: 2px 4px;
+    border-radius: var(--radius-sm);
+    font-size: 0.72rem;
+    line-height: 1.3;
+    text-decoration: none;
+    overflow: hidden;
+    white-space: nowrap;
+    text-overflow: ellipsis;
+    transition: opacity var(--transition);
+}
+
+.cal-event:hover {
+    opacity: 0.8;
+}
+
+.cal-event-appointment {
+    background: var(--amber-soft);
+    color: var(--amber);
+    border-left: 2px solid var(--amber);
+}
+
+.cal-event-meeting {
+    background: var(--purple-soft);
+    color: var(--purple);
+    border-left: 2px solid var(--purple);
+}
+
+.cal-event-task {
+    background: var(--accent-soft);
+    color: var(--accent);
+    border-left: 2px solid var(--accent);
+}
+
+.cal-event-time {
+    font-weight: 600;
+    margin-right: 2px;
+}
+
+.cal-event-title {
+    font-weight: 500;
+}
+
+@media (max-width: 768px) {
+    .cal-week-row { min-height: 60px; }
+    .cal-day-cell { min-height: 60px; padding: 2px; }
+    .cal-day-empty { min-height: 60px; }
+    .cal-day-num { font-size: 0.72rem; }
+    .cal-event { font-size: 0.65rem; padding: 1px 2px; }
+    .cal-event-time { display: none; }
+    .cal-month-label { font-size: 1rem; min-width: 140px; }
+}