/* ============================================
   CALENDAR NAVIGATION
   Integrated into page-header via .page-header--calendar
   ============================================ */

/* --- Modifier: calendar header (icon | nav | actions in one row) --- */
.page-header--calendar {
    align-items: center;
    margin-bottom: var(--space-5);
}

.page-header--calendar .page-header-group {
    flex: 1;
}

.page-header--calendar .date-selector {
    flex: 0 0 auto;
}

.page-header--calendar .page-header-actions {
    flex: 1;
    justify-content: flex-end;
}

/* --- Standalone calendar-navigation (legacy/fallback) --- */

.date-selector {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex: 0 1 auto;
}

.date-selector .btn {
    height: var(--space-9);
}

.prev-month,
.next-month {
    padding: var(--space-2);
    flex-shrink: 0;
    max-width: 20%;
}

.month-year-display {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex: 0 1 auto;
}

.month-selector,
.year-selector {
    position: relative;
}

.month-selector > span,
.year-selector > span {
    min-width: calc(120px * var(--font-scale));
    justify-content: center;
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    inset-inline-start: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 1020;
    min-width: calc(150px * var(--font-scale));
    margin-top: var(--space-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s;
}

.nav-dropdown::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 0;
    right: 0;
    height: 6px;
}

.month-selector:hover .nav-dropdown,
.year-selector:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-option {
    padding: var(--space-2) var(--space-3);
    cursor: pointer;
    color: var(--text-primary);
    font-size: var(--text-sm);
    line-height: 1.4;
    transition: background-color 0.15s;
    border-bottom: 1px solid var(--border);
}

.nav-dropdown-option:first-child {
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.nav-dropdown-option:last-child {
    border-bottom: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.nav-dropdown-option:hover {
    background: var(--primary-color);
    color: white;
}

.nav-dropdown-option.active:hover {
    background: var(--primary-color);
    color: var(--accent);
}

.nav-dropdown-option.active {
    background: var(--accent);
    color: white;
    font-weight: 600;
}

/* --- Today button (shared across all calendar pages) --- */
.btn-today {
    background: var(--surface);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-today:hover {
    background: var(--primary-color);
    color: var(--surface);
    box-shadow: 0 2px 8px var(--black-10);
}

.btn-today svg {
    flex-shrink: 0;
}

/* === Responsive === */

@media (max-width: 1200px) {
    .month-selector > span,
    .year-selector > span {
        min-width: calc(110px * var(--font-scale));
    }
}

@media (max-width: 768px) {
    /* Integrated calendar header */
    .page-header--calendar {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-3);
    }

    .page-header--calendar .date-selector {
        margin: 0;
        width: 100%;
    }

    .page-header--calendar .page-header-actions {
        width: 100%;
    }

    .page-header--calendar .page-header-actions .btn {
        flex: 1;
        justify-content: center;
    }

    /* Standalone calendar-navigation */

    .date-selector {
        width: 100%;
        flex: 0 1 auto;
        gap: var(--space-2);
    }

    .month-year-display {
        flex: 1;
        width: 100%;
        gap: var(--space-2);
    }

    .month-selector > span,
    .year-selector > span {
        flex: 1;
        min-width: auto;
        font-size: var(--text-sm);
    }
}

@media (max-width: 480px) {

    .date-selector {
        width: 100%;
    }

    .month-selector > span,
    .year-selector > span {
        min-width: auto;
        flex: 1;
        font-size: var(--text-xs);
    }
}