.calendar-shell {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.calendar-hero {
    display: grid;
    grid-template-columns: 1.1fr 1.2fr;
    gap: 18px;
    align-items: stretch;
}

.calendar-hero__left,
.calendar-legend {
    background: #111827;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 22px;
    padding: 22px;
}

.calendar-hero__eyebrow,
.calendar-modal__eyebrow {
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #60a5fa;
    margin-bottom: 8px;
}

.calendar-hero__title {
    margin: 0;
    font-size: 28px;
    line-height: 1.08;
}

.calendar-legend {
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 10px;
}

.calendar-filter {
    border: 0;
    cursor: pointer;
    min-height: 40px;
    padding: 8px 14px;
    border-radius: 999px;
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    transition: transform 0.18s ease, opacity 0.18s ease, box-shadow 0.18s ease;
    opacity: 0.45;
}

.calendar-filter:hover {
    transform: translateY(-1px);
    opacity: 0.75;
}

.calendar-filter.is-active {
    opacity: 1;
    box-shadow: 0 10px 24px rgba(0,0,0,0.18);
}

.calendar-filter--all {
    background: linear-gradient(135deg, #475569, #334155);
}

.calendar-filter--exam {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.calendar-filter--quiz {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.calendar-filter--assignment {
    background: linear-gradient(135deg, #10b981, #059669);
}

.calendar-filter--event {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.calendar-filter--important {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.calendar-panel {
    background: #111827;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 24px;
    padding: 18px;
}

.calendar-modal {
    width: min(760px, calc(100% - 28px));
}

.calendar-modal__head {
    margin-bottom: 18px;
}

.calendar-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.calendar-view-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.calendar-view-card {
    padding: 14px;
    border-radius: 16px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
}

.calendar-view-card span {
    display: block;
    color: #9ca3af;
    font-size: 12px;
    margin-bottom: 6px;
}

.calendar-view-card strong {
    display: block;
    font-size: 15px;
    line-height: 1.3;
}

.calendar-view-description-wrap {
    margin-top: 14px;
}

.calendar-view-description-label {
    color: #9ca3af;
    font-size: 13px;
    margin-bottom: 8px;
}

.calendar-view-description {
    padding: 16px;
    border-radius: 16px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    color: #dbe4f0;
    line-height: 1.5;
    min-height: 84px;
}

.fc {
    --fc-border-color: rgba(255,255,255,0.08);
    --fc-page-bg-color: transparent;
    --fc-neutral-bg-color: rgba(255,255,255,0.03);
    --fc-list-event-hover-bg-color: rgba(255,255,255,0.05);
    --fc-today-bg-color: rgba(37,99,235,0.12);
}

.fc .fc-toolbar {
    gap: 10px;
    margin-bottom: 18px !important;
}

.fc .fc-toolbar-title {
    font-size: 1.55rem;
    font-weight: 800;
}

.fc .fc-button {
    border-radius: 14px !important;
    border: 0 !important;
    box-shadow: none !important;
    padding: 0.7em 1em !important;
    font-weight: 700 !important;
}

.fc .fc-button-primary {
    background: rgba(255,255,255,0.08) !important;
    color: #fff !important;
}

.fc .fc-button-primary:hover,
.fc .fc-button-primary:focus {
    background: rgba(255,255,255,0.14) !important;
}

.fc .fc-button-primary.fc-button-active {
    background: #2563eb !important;
}

.fc .fc-col-header-cell-cushion,
.fc .fc-daygrid-day-number,
.fc .fc-list-day-text,
.fc .fc-list-day-side-text {
    color: #e8eef7;
}

.fc .fc-daygrid-day-frame {
    border-radius: 12px;
}

.fc .fc-daygrid-event {
    border-radius: 12px;
    padding: 4px 6px;
    margin-top: 4px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.18);
}

.fc-custom-event__title {
    font-size: 12px;
    font-weight: 700;
    line-height: 1.2;
}

.fc-custom-event__time {
    font-size: 11px;
    opacity: 0.9;
    margin-top: 2px;
}

.fc .fc-list {
    border-radius: 18px;
    overflow: hidden;
    border-color: rgba(255,255,255,0.08);
}

.fc .fc-list-event:hover td {
    background: rgba(255,255,255,0.04);
}

.fc .fc-list-day-cushion,
.fc-theme-standard td,
.fc-theme-standard th {
    background: transparent;
}

.fc .fc-list-event-dot {
    border-color: currentColor !important;
}

.fc .fc-daygrid-more-link {
    color: #93c5fd;
    font-weight: 700;
}

.fc .fc-scrollgrid,
.fc-theme-standard .fc-list {
    border-color: rgba(255,255,255,0.08);
}

.fc .fc-day-today {
    box-shadow: inset 0 0 0 1px rgba(37,99,235,0.3);
}

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

    .calendar-view-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 800px) {
    .page-calendar .main-content {
        padding: 14px 14px 98px;
    }

    .calendar-hero__left,
    .calendar-legend,
    .calendar-panel {
        border-radius: 20px;
        padding: 16px;
    }

    .calendar-hero__title {
        font-size: 24px;
    }

    .calendar-form-grid,
    .calendar-view-grid {
        grid-template-columns: 1fr;
    }

    .calendar-filter {
        min-height: 38px;
        font-size: 12px;
        padding: 8px 12px;
    }

    .fc .fc-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .fc .fc-toolbar-chunk {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px;
    }

    .fc .fc-toolbar-title {
        font-size: 1.25rem;
        text-align: center;
    }

    .fc .fc-list-event-title {
        white-space: normal;
    }

    .fc .fc-list-day-cushion {
        padding: 10px 12px;
    }

    .page-calendar .modal__content.calendar-modal {
        width: calc(100% - 12px);
        max-width: none;
        height: calc(100dvh - 12px);
        max-height: calc(100dvh - 12px);
        margin: 6px auto;
        padding: 14px 14px 0;
        border-radius: 20px;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }

    .page-calendar .calendar-modal__head {
        flex: 0 0 auto;
        margin-bottom: 12px;
        padding-bottom: 2px;
    }

    .page-calendar #eventForm,
    .page-calendar #eventViewModal .calendar-modal {
        min-height: 0;
    }

    .page-calendar #eventForm {
        display: flex;
        flex-direction: column;
        flex: 1 1 auto;
        min-height: 0;
        overflow: hidden;
    }

    .page-calendar #eventForm .form-group,
    .page-calendar #eventForm .calendar-form-grid {
        flex: 0 0 auto;
    }

    .page-calendar #eventForm textarea {
        min-height: 96px;
    }

    .page-calendar #eventForm::before {
        content: "";
        display: block;
        height: 0;
    }

    .page-calendar #eventForm > .actions-row {
        position: sticky;
        bottom: 0;
        z-index: 3;
        margin: 0 -14px;
        padding: 12px 14px calc(12px + env(safe-area-inset-bottom));
        background: linear-gradient(180deg, rgba(17,24,39,0.92) 0%, #111827 24%);
        border-top: 1px solid rgba(255,255,255,0.08);
        flex: 0 0 auto;
    }

    .page-calendar #eventForm {
        overflow-y: auto;
        padding-bottom: 8px;
    }

    .page-calendar #eventForm > .actions-row .btn {
        flex: 1 1 100%;
        width: 100%;
    }

    .page-calendar #eventViewModal .calendar-modal {
        padding-bottom: calc(14px + env(safe-area-inset-bottom));
        overflow-y: auto;
    }
}