.academic-calendar-section {
    background: var(--light);
}

.calendar-topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 30px;
    margin-bottom: 35px;
}

.calendar-topbar h2 {
    margin-bottom: 0;
}

.calendar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.calendar-btn,
.calendar-today-btn {
    height: 44px;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--dark);
    border-radius: 4px;
    font-weight: 700;
    transition: .3s;
}

.calendar-btn {
    width: 44px;
}

.calendar-today-btn {
    padding: 0 18px;
    font-size: 12px;
}

.calendar-btn:hover,
.calendar-today-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.academic-calendar-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 330px;
    gap: 24px;
    align-items: start;
}

.calendar-panel,
.calendar-sidebar-card {
    background: var(--white);
    border: 1px solid var(--border);
}

.calendar-panel {
    padding: 25px;
    min-width: 0;
}

.calendar-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 22px;
}

.calendar-month-label {
    color: var(--secondary);
    font-size: 9px;
    letter-spacing: 2px;
    font-weight: 800;
}

.calendar-heading h3 {
    color: var(--dark);
    font-family: var(--font-heading);
    font-size: 28px;
    line-height: 1.2;
    margin-top: 2px;
}

.calendar-view-note {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 11px;
}

.calendar-view-note i {
    color: var(--secondary);
}

.calendar-weekdays,
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
}

.calendar-weekdays {
    border-top: 1px solid var(--border);
    border-left: 1px solid var(--border);
}

.calendar-weekdays span {
    padding: 11px 5px;
    text-align: center;
    color: var(--muted);
    background: var(--light);
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .5px;
}

.calendar-day {
    min-height: 122px;
    padding: 9px;
    background: var(--white);
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    position: relative;
    min-width: 0;
}

.calendar-day:nth-child(7n + 1) {
    border-left: 1px solid var(--border);
}

.calendar-day.outside-month {
    background: #fbfcfd;
}

.calendar-day-number {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    color: var(--dark);
    font-size: 11px;
    font-weight: 800;
    border-radius: 50%;
    margin-bottom: 6px;
}

.outside-month .calendar-day-number {
    color: #b8c0cc;
}

.calendar-day.today .calendar-day-number {
    background: var(--primary);
    color: var(--white);
}

.calendar-day-events {
    display: grid;
    gap: 5px;
}

.calendar-event {
    width: 100%;
    border: 0;
    border-left: 3px solid var(--event-color);
    background: color-mix(in srgb, var(--event-color) 10%, white);
    color: var(--dark);
    text-align: left;
    padding: 6px 7px;
    border-radius: 2px;
    font-size: 10px;
    line-height: 1.3;
    font-weight: 700;
    cursor: pointer;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: .2s;
}

.calendar-event:hover,
.calendar-event:focus {
    background: color-mix(in srgb, var(--event-color) 18%, white);
    outline: 2px solid color-mix(in srgb, var(--event-color) 38%, transparent);
    outline-offset: 1px;
}

.calendar-sidebar {
    display: grid;
    gap: 20px;
}

.calendar-sidebar-card {
    padding: 25px;
}

.selected-event-empty {
    text-align: center;
    padding: 20px 0 5px;
}

.selected-event-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: #edf4fc;
    color: var(--primary);
    font-size: 24px;
}

.selected-event-empty h3,
.selected-event-content h3,
.sidebar-title {
    color: var(--dark);
    font-size: 18px;
    margin-bottom: 8px;
}

.selected-event-empty p {
    color: var(--muted);
    font-size: 12px;
}

.selected-event-badge {
    display: inline-flex;
    padding: 5px 9px;
    margin: 5px 0 14px;
    border-radius: 20px;
    background: var(--selected-color, var(--primary));
    color: var(--white);
    font-size: 9px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .7px;
}

.selected-event-date {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--light);
    padding: 14px;
    margin: 18px 0 12px;
}

.selected-event-date i {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--white);
    color: var(--selected-color, var(--primary));
}

.selected-event-date small,
.selected-event-date strong {
    display: block;
}

.selected-event-date small {
    color: var(--muted);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.selected-event-date strong {
    color: var(--dark);
    font-size: 12px;
}

.selected-event-id {
    color: var(--muted);
    font-size: 11px;
}

.month-event-list {
    display: grid;
    gap: 9px;
    margin-top: 16px;
}

.month-event-item {
    border: 0;
    width: 100%;
    display: grid;
    grid-template-columns: 38px 1fr;
    gap: 10px;
    align-items: center;
    background: var(--light);
    padding: 9px;
    text-align: left;
    cursor: pointer;
    border-left: 3px solid var(--event-color);
}

.month-event-item:hover,
.month-event-item:focus {
    background: #eef3f8;
    outline: none;
}

.month-event-date {
    text-align: center;
    color: var(--event-color);
    font-weight: 800;
    font-size: 18px;
    line-height: 1;
}

.month-event-date small {
    display: block;
    color: var(--muted);
    font-size: 8px;
    margin-top: 3px;
    text-transform: uppercase;
}

.month-event-item strong {
    color: var(--dark);
    font-size: 11px;
    line-height: 1.4;
}

.calendar-empty-month {
    color: var(--muted);
    font-size: 12px;
    padding: 15px 0 5px;
}

.calendar-load-error {
    grid-column: 1 / -1;
    padding: 35px 20px;
    text-align: center;
    color: #b42318;
    background: #fff5f4;
    border: 1px solid #fecdca;
    font-size: 13px;
}

@supports not (background: color-mix(in srgb, red 10%, white)) {
    .calendar-event {
        background: #f5f7fa;
    }
}

@media (max-width: 1000px) {
    .academic-calendar-layout {
        grid-template-columns: 1fr;
    }

    .calendar-sidebar {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 750px) {
    .calendar-topbar,
    .calendar-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .calendar-actions {
        width: 100%;
    }

    .calendar-today-btn {
        flex: 1;
    }

    .calendar-panel {
        padding: 15px;
        overflow-x: auto;
    }

    .calendar-weekdays,
    .calendar-grid {
        min-width: 720px;
    }

    .calendar-sidebar {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .calendar-view-note {
        display: none;
    }

    .calendar-panel {
        margin-left: -15px;
        margin-right: -15px;
        border-left: 0;
        border-right: 0;
    }
}