.active-chain-selection {
    border: 1px solid rgba(40, 167, 69, 0.3);
    border-radius: 12px;
    background: rgba(40, 167, 69, 0.08);
    padding: 12px 14px;
}

.active-chain-selection-title {
    color: #166534;
    font-weight: 700;
    margin-bottom: 6px;
}

.active-chain-selection-line {
    color: #334155;
    font-size: 0.9rem;
    line-height: 1.45;
}

.chain-selection-modal {
    position: fixed;
    inset: 0;
    z-index: 1080;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
    background: rgba(15, 23, 42, 0.68);
}

.chain-selection-modal[hidden] {
    display: none !important;
}

.chain-selection-panel {
    width: min(720px, 100%);
    max-height: min(85vh, 760px);
    overflow-y: auto;
    border-radius: 18px;
    background: #fff;
    padding: 22px;
    box-shadow: 0 24px 70px rgba(15, 23, 42, 0.32);
}

.chain-selection-header,
.chain-selection-actions {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.chain-selection-exchanges {
    display: grid;
    gap: 14px;
    margin: 22px 0;
}

.chain-selection-exchange {
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    background: #f8fafc;
    padding: 14px;
}

.chain-selection-actions {
    justify-content: flex-end;
    align-items: center;
    border-top: 1px solid #e2e8f0;
    padding-top: 18px;
}

body.chain-selection-open {
    overflow: hidden;
}

.modern-chain-card.selection-open {
    z-index: 1080;
    overflow: visible;
    transform: none !important;
}

@media (max-width: 576px) {
    .chain-selection-modal {
        align-items: flex-end;
        padding: 0;
    }

    .chain-selection-panel {
        width: 100%;
        max-height: 90vh;
        border-radius: 18px 18px 0 0;
        padding: 18px;
    }

    .chain-selection-actions {
        align-items: stretch;
        flex-direction: column-reverse;
    }

    .chain-selection-actions .btn {
        width: 100%;
    }
}