/* Calendar View */
.calendar-view {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--bg-surface);
    border-radius: 1rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.calendar-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: capitalize;
}

.calendar-grid-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr) 120px; /* 7 days + 1 summary col */
    background: #f8fafc;
    border-bottom: 1px solid var(--border);
}

.calendar-day-name {
    padding: 1rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr) 120px;
    flex: 1;
    overflow-y: auto;
}

.calendar-day {
    min-height: 120px;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem;
    position: relative;
    background: #fff;
}

.calendar-day.empty {
    background: #f9fafb;
}

.calendar-day.today {
    background: #f0f9ff;
}

.day-number {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    display: block;
}

.calendar-event {
    background: var(--bg-body);
    border-left: 3px solid var(--primary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    margin-bottom: 0.25rem;
    font-size: 0.75rem;
    cursor: pointer;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.calendar-event.overdue {
    border-left-color: var(--danger);
    background: #fef2f2;
    color: var(--danger);
}

.calendar-event.paid {
    border-left-color: var(--success);
    opacity: 0.6;
}

.week-summary {
    background: #f1f5f9;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
    text-align: center;
}

.week-summary .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.week-summary .total {
    font-weight: 700;
    color: var(--primary);
    font-size: 1rem;
}