.fab-wrapper {
    position: fixed;
    bottom: 4rem;
    left: 1rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.6rem;
}

.fab-label {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 100px;
    padding: 0.35rem 0.9rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    color: #6366f1;
    text-transform: uppercase;
    white-space: nowrap;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    opacity: 0;
    transform: translateX(8px);
    transition: opacity 0.25s, transform 0.25s;
    pointer-events: none;
}

.fab-wrapper:hover .fab-label {
    opacity: 1;
    transform: translateX(0);
}

.fab-btn {
    width: 45px;
    height: 45px;
    border-radius: 10px;
    background: #fff;
    border: 1.5px solid #e5e7eb;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 10px 30px rgba(99, 102, 241, 0.12), 0 0 0 0 rgba(99, 102, 241, 0.2);
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s;
    animation: qrFabSoftPulse 3.5s ease-in-out infinite;
}

@keyframes qrFabSoftPulse {
    0%, 100% {
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 10px 30px rgba(99, 102, 241, 0.12), 0 0 0 0 rgba(99, 102, 241, 0.2);
    }
    50% {
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 10px 30px rgba(99, 102, 241, 0.2), 0 0 0 10px rgba(99, 102, 241, 0);
    }
}

.fab-btn:hover {
    transform: scale(1.07) translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.22), 0 2px 6px rgba(0, 0, 0, 0.06);
    animation: none;
}

.fab-btn:active {
    transform: scale(0.95);
}

.fab-qr-img {
    width: 34px;
    height: 34px;
    object-fit: contain;
    border-radius: 4px;
    display: block;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 35, 0.3);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.modal-card {
    background: #ffffff;
    border-radius: 24px;
    padding: 2rem;
    width: 100%;
    max-width: 320px;
    position: relative;
    box-shadow: 0 0 0 1px rgba(99, 102, 241, 0.1), 0 20px 60px rgba(0, 0, 0, 0.12), 0 4px 16px rgba(99, 102, 241, 0.08);
    transform: translateY(24px) scale(0.96);
    transition: transform 0.4s cubic-bezier(0.34, 1.15, 0.64, 1);
}

.modal-overlay.open .modal-card {
    transform: translateY(0) scale(1);
}

.modal-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 2rem;
    right: 2rem;
    height: 3px;
    background: linear-gradient(90deg, #6366f1, #a78bfa, #6366f1);
    border-radius: 0 0 4px 4px;
    background-size: 200% 100%;
    animation: qrFabShimmer 2.5s linear infinite;
}

@keyframes qrFabShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: #f3f4f6;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    transition: background 0.2s, color 0.2s;
}

.close-btn:hover {
    background: #fee2e2;
    color: #ef4444;
}

.modal-header {
    margin-bottom: 1.5rem;
    padding-right: 2rem;
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: #1e1b4b;
    letter-spacing: -0.02em;
}

.qr-frame {
    background: #fff;
    border: 1.5px solid #e5e7eb;
    border-radius: 16px;
    padding: 14px;
    width: 184px;
    height: 184px;
    margin: 0 auto 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.qr-frame::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #6366f1 30%, #a78bfa 70%, transparent);
    opacity: 0.55;
    animation: qrFabSweep 2.8s ease-in-out infinite;
}

@keyframes qrFabSweep {
    0%, 100% { top: 8%; }
    50% { top: 88%; }
}

.corner {
    position: absolute;
    width: 16px;
    height: 16px;
    border-color: #6366f1;
    border-style: solid;
    border-radius: 2px;
    z-index: 1;
}

.corner.tl { top: 6px; left: 6px; border-width: 2px 0 0 2px; }
.corner.tr { top: 6px; right: 6px; border-width: 2px 2px 0 0; }
.corner.bl { bottom: 6px; left: 6px; border-width: 0 0 2px 2px; }
.corner.br { bottom: 6px; right: 6px; border-width: 0 2px 2px 0; }

.qr-img {
    width: 152px;
    height: 152px;
    object-fit: contain;
    border-radius: 6px;
    display: block;
    position: relative;
    z-index: 0;
}

.action-row {
    gap: 0.6rem;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem;
    border-radius: 11px;
    border: 1.5px solid #e5e7eb;
    background: #fff;
    color: #374151;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.2s;
    font-weight: 500;
    height: 45%;
}

.action-btn:hover {
    border-color: #6366f1;
    color: #6366f1;
    background: #f5f3ff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.12);
}

.action-btn svg {
    width: 13px;
    height: 13px;
    flex-shrink: 0;
}

.HUC_actionqr_input {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.HUC_actionqr_input .inputWrapper {
    border-radius: 10px;
    border: 1.5px solid #e5e7eb;
    background: #fff;
    color: #374151;
}

.HUC_actionqr_input input {
    padding: 0.65rem;
    border-radius: 10px;
    border: 1.5px solid #e5e7eb;
    color: #374151;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    width: 100%;
    height: 100%;
    box-shadow: none;
}

.HUC_actionqr_input .buttonWrapper {
    border-radius: 10px;
    border: 1.5px solid #e5e7eb;
    background: #6366f1;
    color: #fff;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.2s;
}

.HUC_actionqr_input button {
    padding: 0.65rem;
    border-radius: 10px;
    background: #6366f1;
    color: #fff;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.2s;
    width: 100%;
    height: 100%;
    box-shadow: none;
    border: none;
}

#qrFabToast {
    position: fixed;
    bottom: 7.5rem;
    right: 2.5rem;
    background: #fff;
    border: 1px solid #e0e7ff;
    border-radius: 10px;
    padding: 0.55rem 1rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    color: #6366f1;
    letter-spacing: 0.06em;
    z-index: 3000;
    transform: translateY(10px);
    opacity: 0;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.12);
    transition: all 0.3s cubic-bezier(0.34, 1.2, 0.64, 1);
    pointer-events: none;
}

#qrFabToast.show {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 480px) {
    .fab-wrapper {
        bottom: 1.5rem;
        left: 1rem;
    }

    .modal-card {
        padding: 1.75rem 1.5rem;
        border-radius: 20px;
    }
}