/* Seletor global de período: mês (`<select>`) e intervalo personalizado (popover). Base em style.css (.period-*). */
.period-picker {
    position: relative;
    min-width: 0;
}

.period-divider {
    align-self: stretch;
    width: 1px;
    margin: 4px 2px;
    background: var(--border);
}

/* Id: o atalho `background` de .period-btn (hover/ativo) não apaga a seta. */
#period-month {
    appearance: none;
    -webkit-appearance: none;
    padding-right: 30px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5l3 3 3-3' fill='none' stroke='%23F5F5F7' stroke-opacity='0.74' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 12px;
}

#period-month.active {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5l3 3 3-3' fill='none' stroke='%230A0B14' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

#period-month option {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.period-popover {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 50;
    width: min(340px, calc(100vw - 32px));
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow-xl);
}

.period-popover[hidden] {
    display: none;
}

.period-popover-title {
    margin: 0 0 12px;
    color: var(--text-primary);
    font-size: var(--fs-sm);
    font-weight: 600;
}

.period-popover-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.period-popover-fields label {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 0;
    color: var(--text-muted);
    font-size: var(--fs-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.period-popover-fields input {
    width: 100%;
    min-width: 0;
    min-height: 40px;
    padding: 7px 10px;
    color: var(--text-primary);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    font-family: inherit;
    font-size: var(--fs-sm);
    font-weight: 500;
    letter-spacing: normal;
}

.period-popover-fields input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.period-popover-fields input[aria-invalid="true"] {
    border-color: var(--red);
}

.period-popover-error {
    margin: 10px 0 0;
    color: var(--red);
    font-size: var(--fs-sm);
}

.period-popover-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 14px;
}

/* Celular: presets na primeira linha, Mês e Personalizar na segunda; popover na largura do grupo. */
@media (max-width: 600px) {
    .period-picker {
        width: 100%;
    }

    .period-buttons {
        flex-wrap: wrap;
    }

    .period-buttons .period-btn[data-period] {
        flex: 1 1 15%;
    }

    .period-divider {
        display: none;
    }

    .period-btn.period-month,
    .period-btn.period-custom-toggle {
        flex: 1 1 40%;
    }

    .period-popover {
        left: 0;
        width: auto;
    }
}