.future-calendar-tool {
    --calendar-accent: #0052cc;
    --calendar-accent-soft: #edf5ff;
    --calendar-border: #dce5f2;
    --calendar-text: #243247;
    --calendar-muted: #7a8595;
    --calendar-holiday: #b42318;
    --calendar-holiday-soft: #fee4e2;
    --calendar-weekend: #9a5b13;
    --calendar-workday: #9a3412;
    margin: 28px 0 36px;
    color: var(--calendar-text);
}

.calendar-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 10px;
    margin-bottom: 16px;
    padding: 16px;
    border: 1px solid var(--calendar-border);
    border-radius: 10px;
    background: #f7faff;
}

.calendar-control-button,
.calendar-select-control select {
    min-height: 44px;
    border: 1px solid #b9c8dc;
    border-radius: 7px;
    background: #fff;
    color: #17365f;
    font: inherit;
    font-size: 15px;
    line-height: 1.2;
}

.calendar-control-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.calendar-control-button:hover:not(:disabled) {
    border-color: var(--calendar-accent);
    background: var(--calendar-accent-soft);
    color: var(--calendar-accent);
}

.calendar-control-button:focus-visible,
.calendar-select-control select:focus-visible {
    outline: 3px solid rgba(0, 82, 204, 0.24);
    outline-offset: 2px;
    border-color: var(--calendar-accent);
}

.calendar-control-button:disabled {
    cursor: not-allowed;
    opacity: 0.48;
    background: #edf1f6;
}

.calendar-today-button {
    border-color: var(--calendar-accent);
    background: var(--calendar-accent);
    color: #fff;
}

.calendar-today-button:hover:not(:disabled) {
    background: #003f9e;
    color: #fff;
}

.calendar-select-control {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 112px;
}

.calendar-select-control label {
    margin: 0;
    color: #52647c;
    font-size: 13px;
    font-weight: 700;
}

.calendar-select-control select {
    width: 100%;
    padding: 8px 34px 8px 10px;
    cursor: pointer;
}

.calendar-panel {
    width: 100%;
    overflow: hidden;
    border: 1px solid var(--calendar-border);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 4px 16px rgba(0, 52, 122, 0.08);
}

.calendar-heading {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--calendar-border);
    background: #f8fbff;
}

.article-content .calendar-heading h2 {
    margin: 0;
    padding: 0;
    border: 0;
    color: #001a4d;
    font-size: 1.45rem;
    line-height: 1.3;
}

.calendar-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 7px 12px;
    color: #5c6878;
    font-size: 12px;
}

.calendar-legend > span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.legend-swatch {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 3px;
    border: 1px solid transparent;
}

.legend-today {
    border: 2px solid var(--calendar-accent);
    background: var(--calendar-accent-soft);
}

.legend-holiday {
    background: var(--calendar-holiday-soft);
    border-color: #f7b6b1;
}

.legend-weekend {
    background: #fff3df;
    border-color: #edc88e;
}

.legend-workday {
    background: #ffedd5;
    border-color: #fdba74;
}

.calendar-weekdays,
.calendar-week {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    width: 100%;
}

.calendar-weekdays {
    border-bottom: 1px solid var(--calendar-border);
    background: #f3f6fa;
}

.calendar-weekdays > div {
    min-width: 0;
    padding: 9px 2px;
    color: #536276;
    font-size: 13px;
    font-weight: 800;
    text-align: center;
}

.calendar-weekdays > div:first-child,
.calendar-weekdays > div:last-child {
    color: var(--calendar-weekend);
}

.calendar-grid {
    width: 100%;
    border-left: 1px solid var(--calendar-border);
}

.calendar-week {
    width: 100%;
}

.calendar-day {
    position: relative;
    min-width: 0;
    min-height: 92px;
    padding: 9px;
    overflow: hidden;
    border-right: 1px solid var(--calendar-border);
    border-bottom: 1px solid var(--calendar-border);
    background: #fff;
    color: var(--calendar-text);
}

.calendar-week:last-child .calendar-day {
    border-bottom: 0;
}

.calendar-day.is-weekend .calendar-date-number {
    color: var(--calendar-weekend);
}

.calendar-day.is-outside-month {
    background: #f7f8fa;
    color: var(--calendar-muted);
}

.calendar-day.is-outside-month .calendar-date-number,
.calendar-day.is-outside-month .calendar-holiday-label {
    opacity: 0.55;
}

.calendar-day.is-today {
    z-index: 1;
    background: var(--calendar-accent-soft);
    box-shadow: inset 0 0 0 2px var(--calendar-accent);
}

.calendar-day.is-today .calendar-date-number {
    color: var(--calendar-accent);
}

.calendar-day.is-holiday .calendar-date-number {
    color: var(--calendar-holiday);
}

.calendar-day.is-adjusted-workday {
    background: #fffaf3;
}

.calendar-day.is-observed-holiday {
    background: #fffaf3;
}

.calendar-day.is-observed-holiday .calendar-date-number {
    color: var(--calendar-workday);
}

.calendar-date-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4px;
}

.calendar-date-number {
    color: inherit;
    font-size: 16px;
    font-weight: 800;
    line-height: 1.2;
}

.calendar-today-label {
    padding: 2px 5px;
    border-radius: 999px;
    background: var(--calendar-accent);
    color: #fff;
    font-size: 10px;
    font-weight: 800;
    line-height: 1.25;
}

.calendar-holiday-label {
    display: -webkit-box;
    max-width: 100%;
    margin-top: 8px;
    padding: 3px 5px;
    overflow: hidden;
    border-radius: 4px;
    background: var(--calendar-holiday-soft);
    color: var(--calendar-holiday);
    font-size: 11px;
    font-weight: 700;
    line-height: 1.25;
    overflow-wrap: anywhere;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.calendar-holiday-label.is-workday-label,
.calendar-holiday-label.is-observed-label {
    background: #ffedd5;
    color: var(--calendar-workday);
}

.article-content p.calendar-data-note,
.article-content p.calendar-noscript {
    margin: 12px 2px 0;
    color: #5d6877;
    font-size: 13px;
    line-height: 1.6;
}

.article-content p.calendar-noscript {
    padding: 12px;
    border-left: 4px solid #c2410c;
    background: #fff7ed;
    color: #7c2d12;
}

.calendar-related-tools {
    margin-top: 30px;
    padding: 2px 18px 8px;
    border: 1px solid var(--calendar-border);
    border-radius: 9px;
    background: #f8fbff;
}

.calendar-visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

@media (max-width: 640px) {
    .calendar-controls {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        padding: 12px;
    }

    .calendar-control-button,
    .calendar-select-control {
        width: 100%;
        min-width: 0;
    }

    .calendar-today-button {
        grid-column: 1 / -1;
    }

    .calendar-heading {
        align-items: flex-start;
        padding: 14px;
    }

    .calendar-legend {
        width: 100%;
    }

    .calendar-day {
        min-height: 70px;
        padding: 6px;
    }

    .calendar-date-number {
        font-size: 14px;
    }

    .calendar-holiday-label {
        margin-top: 6px;
        padding: 2px 3px;
        font-size: 10px;
    }
}

@media (max-width: 380px) {
    .calendar-controls {
        gap: 8px;
    }

    .calendar-day {
        min-height: 64px;
        padding: 4px;
    }

    .calendar-weekdays > div {
        padding: 8px 1px;
    }

    .calendar-today-label {
        padding: 1px 3px;
        font-size: 9px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .calendar-control-button {
        transition: none;
    }
}