/* === calc_date_diff.css === */
/* Date difference calculator: result cards, donut, excluded days accordion, empty state */

/* ---- Layout: cards + donut side by side on desktop ---- */
.date-diff-result-layout {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: start;
    margin: 20px 0;
}

/* ---- Cards ---- */
.date-diff-cards {
    margin: 0;
}
.date-diff-cards .result-card-sm {
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
}
.date-diff-cards .result-card-sm:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}
.date-diff-cards .result-card-sm--accent .result-card-sm__value {
    color: var(--primary);
}
.date-diff-cards .result-card-sm__value {
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-main);
}

/* ---- Donut ---- */
.date-diff-donut {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    box-shadow: var(--shadow-sm);
}
.date-diff-donut__svg {
    width: 140px;
    height: 140px;
    flex-shrink: 0;
}

/* === Donut segments (Safari fix: stroke via CSS, not presentation attribute) === */
.date-diff-donut__seg {
    transition: stroke-dashoffset 0.4s ease;
}
.date-diff-donut__seg--bg {
    stroke: var(--date-diff-donut-bg, #e5e7eb);
}
.date-diff-donut__seg--work {
    stroke: var(--primary);
}
.date-diff-donut__seg--weekend {
    stroke: var(--text-muted);
}
.date-diff-donut__seg--holiday {
    stroke: var(--danger);
}

.date-diff-donut__center-text {
    font-family: var(--font-main);
    font-size: 18px;
    font-weight: 700;
    fill: var(--text-main);
}
.date-diff-donut__center-sub {
    font-family: var(--font-main);
    font-size: 10px;
    fill: var(--text-muted);
}
.date-diff-donut__legend {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.date-diff-donut__legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.92rem;
    color: var(--text-secondary);
}
.date-diff-donut__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}
.date-diff-donut__dot--work { background: var(--primary); }
.date-diff-donut__dot--weekend { background: var(--text-muted); }
.date-diff-donut__dot--holiday { background: var(--danger); }
.date-diff-donut__label {
    color: var(--text-main);
    font-weight: 500;
}

/* ---- Summary line ---- */
.date-diff-summary {
    margin: 6px 0 14px;
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.date-diff-summary strong {
    color: var(--text-main);
    font-weight: 600;
}

/* ---- Excluded days accordion ---- */
.date-diff-excluded {
    margin: 12px 0 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    overflow: hidden;
}
.date-diff-excluded__summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-main);
    list-style: none;
    user-select: none;
    transition: background var(--transition);
}
.date-diff-excluded__summary:hover {
    background: var(--bg-card-hover);
}
.date-diff-excluded__summary::-webkit-details-marker {
    display: none;
}
.date-diff-excluded__summary::marker {
    display: none;
}
.date-diff-excluded__title {
    display: flex;
    align-items: center;
    gap: 8px;
}
.date-diff-excluded__title::before {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 6px solid var(--text-muted);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    transition: transform var(--transition);
}
.date-diff-excluded[open] .date-diff-excluded__title::before {
    transform: rotate(90deg);
}
.date-diff-excluded__count {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    background: var(--bg-surface);
    padding: 2px 8px;
    border-radius: 20px;
}
.date-diff-excluded__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
    padding: 12px 16px 16px;
    border-top: 1px solid var(--border);
}
.date-diff-excluded__month {
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
}
.date-diff-excluded__month-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}
.date-diff-excluded__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.date-diff-excluded__item {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: 0.9rem;
    color: var(--text-main);
    padding: 2px 0;
}
.date-diff-excluded__date {
    font-variant-numeric: tabular-nums;
    font-weight: 500;
}
.date-diff-excluded__reason {
    font-size: 0.82rem;
    color: var(--text-muted);
    text-align: right;
}

/* ---- Dark theme overrides ---- */
[data-theme="dark"] .date-diff-donut {
    background: var(--bg-card);
    border-color: var(--border);
}
[data-theme="dark"] .date-diff-excluded {
    background: var(--bg-card);
    border-color: var(--border);
}
[data-theme="dark"] .date-diff-excluded__month {
    background: var(--bg-surface);
}
[data-theme="dark"] .date-diff-excluded__summary:hover {
    background: var(--bg-card-hover);
}
/* dark-theme fill override removed — base classes now use fill:var(--text-main/--text-muted) */
.date-diff-donut__center-text,
[data-theme="dark"] .date-diff-donut__center-text {
    fill: var(--text-main);
}
.date-diff-donut__center-sub,
[data-theme="dark"] .date-diff-donut__center-sub {
    fill: var(--text-muted);
}
[data-theme="dark"] .date-diff-calendar__month {
    background: var(--bg-card);
    border-color: var(--border);
}
[data-theme="dark"] .date-diff-calendar__day--work {
    background: var(--success-bg, rgba(16, 185, 129, 0.18));
    color: var(--success, #34d399);
    border-color: var(--success-border, rgba(16, 185, 129, 0.35));
}
[data-theme="dark"] .date-diff-calendar__day--weekend {
    background: var(--bg-surface);
    color: var(--text-muted);
    border-color: var(--border);
}
[data-theme="dark"] .date-diff-calendar__day--holiday {
    background: var(--danger-bg, rgba(239, 68, 68, 0.18));
    color: var(--danger, #f87171);
    border-color: var(--danger-border, rgba(239, 68, 68, 0.35));
}
[data-theme="dark"] .date-diff-calendar__day--regional_holiday {
    background: var(--warning-bg, rgba(245, 158, 11, 0.18));
    color: var(--warning, #fbbf24);
    border-color: var(--warning-border, rgba(245, 158, 11, 0.35));
}
[data-theme="dark"] .date-diff-calendar__day--shortened {
    background: var(--info-bg, rgba(59, 130, 246, 0.18));
    color: var(--info, #60a5fa);
    border-color: var(--info-border, rgba(59, 130, 246, 0.35));
}
[data-theme="dark"] .date-diff-calendar__day--out {
    color: var(--text-muted);
    opacity: 0.25;
}

/* ---- Tabs ---- */
.date-diff-tabs {
    margin: 12px 0 16px;
}
.date-diff-tabs__nav {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 12px;
}
.date-diff-tabs__btn {
    padding: 8px 16px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: color var(--transition), border-color var(--transition);
    font-family: var(--font-main);
}
.date-diff-tabs__btn:hover {
    color: var(--text-main);
}
.date-diff-tabs__btn--active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}
.date-diff-tabs__panel {
    animation: fadeIn 0.25s ease;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- Calendar grid ---- */
.date-diff-calendar {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin: 8px 0;
}
.date-diff-calendar__month {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px;
    box-shadow: var(--shadow-sm);
}
.date-diff-calendar__month-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}
.date-diff-calendar__weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-bottom: 4px;
}
.date-diff-calendar__weekday {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.date-diff-calendar__week {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}
.date-diff-calendar__day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-main);
    background: var(--bg-surface);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    cursor: default;
}
.date-diff-calendar__day--work {
    background: var(--success-bg, rgba(16, 185, 129, 0.12));
    color: var(--success, #10b981);
    border: 1px solid var(--success-border, rgba(16, 185, 129, 0.25));
}
.date-diff-calendar__day--weekend {
    background: var(--bg-surface);
    color: var(--text-muted);
    border: 1px solid var(--border);
    opacity: 0.7;
}
.date-diff-calendar__day--holiday {
    background: var(--danger-bg, rgba(239, 68, 68, 0.12));
    color: var(--danger, #ef4444);
    border: 1px solid var(--danger-border, rgba(239, 68, 68, 0.25));
    font-weight: 700;
}
.date-diff-calendar__day--regional_holiday {
    background: var(--warning-bg, rgba(245, 158, 11, 0.12));
    color: var(--warning, #f59e0b);
    border: 1px solid var(--warning-border, rgba(245, 158, 11, 0.25));
    font-weight: 700;
}
.date-diff-calendar__day--shortened {
    background: var(--info-bg, rgba(59, 130, 246, 0.12));
    color: var(--info, #3b82f6);
    border: 1px solid var(--info-border, rgba(59, 130, 246, 0.25));
}
.date-diff-calendar__day--out {
    background: transparent;
    color: var(--text-muted);
    opacity: 0.35;
    border: 1px solid transparent;
}
.date-diff-calendar__day--empty {
    background: transparent;
    border: none;
}
.date-diff-calendar__day:not(.date-diff-calendar__day--empty):hover {
    transform: scale(1.08);
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    z-index: 1;
}
.date-diff-calendar__day-num {
    font-variant-numeric: tabular-nums;
}
.date-diff-calendar__empty {
    color: var(--text-muted);
    font-size: 0.95rem;
    text-align: center;
    padding: 24px 0;
}

/* ---- Calendar legend ---- */
.date-diff-calendar__legend {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 16px;
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.date-diff-calendar__legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}
.date-diff-calendar__legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 3px;
    flex-shrink: 0;
}
.date-diff-calendar__legend-dot--work {
    background: var(--success, #10b981);
}
.date-diff-calendar__legend-dot--weekend {
    background: var(--text-muted, #94a3b8);
}
.date-diff-calendar__legend-dot--holiday {
    background: var(--danger, #ef4444);
}
.date-diff-calendar__legend-dot--regional {
    background: var(--warning, #f59e0b);
}
.date-diff-calendar__legend-dot--shortened {
    background: var(--info, #3b82f6);
}

/* ---- Mobile ---- */
@media (max-width: 768px) {
    .date-diff-result-layout {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .date-diff-donut {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .date-diff-donut__svg {
        width: 120px;
        height: 120px;
    }
    .date-diff-donut__legend {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    .date-diff-excluded__grid {
        grid-template-columns: 1fr;
    }
    .date-diff-cards .result-card-sm__value {
        font-size: 1.8rem;
    }
    .date-diff-calendar {
        grid-template-columns: 1fr;
    }
    .date-diff-calendar__day {
        font-size: 0.78rem;
    }
    .date-diff-tabs__nav {
        gap: 2px;
    }
    .date-diff-tabs__btn {
        padding: 6px 10px;
        font-size: 0.88rem;
    }
}

.date-diff-excluded__note {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin: 6px 0 0;
    padding: 8px 12px;
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    border-left: 2px solid var(--info, #3b82f6);
    line-height: 1.5;
}
[data-theme="dark"] .date-diff-excluded__note {
    background: var(--bg-surface);
    border-left-color: var(--info, #60a5fa);
}

/* ---- Source badge ---- */
.date-diff-source {
    margin: 8px 0 12px;
}
.date-diff-source__badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.4;
}
.date-diff-source__badge svg {
    flex-shrink: 0;
    color: var(--info, #3b82f6);
}

/* ---- Inverse result ---- */
.date-diff-inverse-result {
    margin: 20px 0;
}

/* ---- Batch result ---- */
.date-diff-batch-result {
    margin: 20px 0;
}
.date-diff-batch-periods {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 16px;
}
.date-diff-batch-period {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}
.date-diff-batch-period__dates {
    font-weight: 600;
    color: var(--text-main);
    font-size: 0.95rem;
}
.date-diff-batch-period__stats {
    display: flex;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ---- Segmented toggle for 4 items ---- */
.segmented-toggle--4 {
    max-width: 100%;
    width: auto;
}
.segmented-toggle--4 .segmented-toggle__option {
    flex: 1 1 auto;
    white-space: nowrap;
}

@media (max-width: 480px) {
    .segmented-toggle--4 {
        display: flex;
        width: 100%;
        max-width: 100%;
        flex-wrap: wrap;
        justify-content: center;
        gap: 3px;
        padding: 4px;
        border-radius: 10px;
    }
    .segmented-toggle--4 .segmented-toggle__option {
        flex: 1 1 auto;
        font-size: 0.75rem;
        padding: 5px 6px;
        border-radius: 6px;
        white-space: normal;
        line-height: 1.2;
        overflow: visible;
        text-overflow: clip;
    }
    .segmented-toggle--4 .segmented-toggle__option:nth-child(3),
    .segmented-toggle--4 .segmented-toggle__option:nth-child(4) {
        flex: 1 1 100%;
        max-width: 100%;
    }
    .segmented-toggle--4 .segmented-toggle__option:has(input:checked) {
        box-shadow: none;
    }
}

/* ---- Compare layout ---- */
.date-diff-compare-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 16px;
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
}
.date-diff-compare-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow-sm);
    min-width: 0;
    overflow: hidden;
    box-sizing: border-box;
}
.date-diff-compare-panel .calc-form__row--2 {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    min-width: 0;
}
.date-diff-compare-panel .input-glass {
    min-width: 0;
    overflow: hidden;
    padding: 0 4px 0 8px;
}
.date-diff-compare-panel .input-glass__field {
    min-width: 0;
    width: 100%;
    padding: 10px 4px 10px 0;
}
.date-diff-compare-panel .input-glass__field[type="date"] {
    width: 100%;
    min-width: 0;
}
.date-diff-compare-panel__title {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text-main);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

/* ---- Compare result ---- */
.date-diff-compare-result {
    margin: 20px 0;
}
.date-diff-compare-result__header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}
.date-diff-compare-result__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
}
.date-diff-compare-result__diff {
    font-size: 0.95rem;
    color: var(--text-secondary);
}
.date-diff-compare-result__layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.date-diff-compare-result__panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow-sm);
}
.date-diff-compare-result__panel-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 6px;
}
.date-diff-compare-result__panel-dates {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

@media (max-width: 768px) {
    .date-diff-compare-layout,
    .date-diff-compare-result__layout {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .date-diff-compare-result__header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .date-diff-donut__svg {
        width: 100px;
        height: 100px;
    }
    .date-diff-donut__legend {
        gap: 4px;
    }
    .date-diff-donut__legend-item {
        font-size: 0.85rem;
    }
    .date-diff-cards .result-card-sm__value {
        font-size: 1.6rem;
    }
    .date-diff-calendar__day {
        font-size: 0.72rem;
        border-radius: 4px;
    }
    .date-diff-source__badge {
        font-size: 0.78rem;
        padding: 5px 10px;
    }
}