.purchase-box {
    background: #f8fbff;
    border: 1px solid var(--optimo-border, #dbe5ef);
    padding: 20px;
    border-radius: 18px;
    margin-bottom: 22px;
}

.purchase-box-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.purchase-box-header h3 {
    margin: 0;
}

.purchase-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr auto;
    gap: 12px;
    margin-bottom: 12px;
    align-items: center;
}

.purchase-row select,
.purchase-row input {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    font-size: 15px;
    background: #ffffff;
    box-sizing: border-box;
}

.purchase-filters {
    display: grid;
    grid-template-columns: minmax(180px, 1fr) 180px auto auto;
    gap: 12px;
    margin-bottom: 20px;
    align-items: center;
}

.purchase-filters input {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    font-size: 15px;
    background: #ffffff;
    box-sizing: border-box;
}

.purchase-filters .optimo-btn,
.purchase-filters .small-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: auto;
    min-width: 90px;
    height: 44px;
    min-height: 44px;
    padding: 10px 18px !important;
    border-radius: 14px;
    font-size: 13px;
    font-weight: 800;
    white-space: nowrap;
    text-decoration: none;
    box-sizing: border-box;
}

.purchase-filters .small-link,
.purchase-filters .optimo-btn.secondary {
    background: #e2e8f0;
    color: #0f172a !important;
}

@media (max-width: 900px) {
    .purchase-row {
        grid-template-columns: 1fr;
    }

    .purchase-box-header {
        align-items: stretch;
        flex-direction: column;
    }

    .purchase-box-header .optimo-btn {
        width: 100%;
    }

    .purchase-filters {
        grid-template-columns: 1fr 1fr;
    }

    .purchase-filters input {
        min-height: 44px;
    }

    .purchase-filters .optimo-btn,
    .purchase-filters .small-link {
        width: 100%;
        min-width: 0;
    }
}

@media (max-width: 700px) {
    .purchase-filters {
        grid-template-columns: 1fr;
    }

    .purchase-filters .optimo-btn:not(.secondary) {
        width: 100%;
    }

    .purchase-filters .optimo-btn.secondary,
    .purchase-filters .small-link {
        width: auto !important;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 10px 18px !important;
        height: 44px;
        min-height: 44px;
        margin-top: 4px;
        border-radius: 14px;
    }
}

@media (max-width: 520px) {
    .purchase-box {
        padding: 15px;
        border-radius: 16px;
    }

    .purchase-filters {
        gap: 10px;
    }

    .purchase-filters .optimo-btn:not(.secondary) {
        height: 42px;
        min-height: 42px;
        padding: 9px 12px !important;
        font-size: 13px;
    }

    .purchase-filters .optimo-btn.secondary,
    .purchase-filters .small-link {
        height: 42px;
        min-height: 42px;
        padding: 9px 16px !important;
        font-size: 13px;
    }

    .purchase-row {
        gap: 10px;
    }
}