.arr-fab {
    position: fixed;
    bottom: 30px;
    left: 24px;
    z-index: 999998;
    background: linear-gradient(135deg, #e94560 0%, #c23152 100%);
    color: #ffffff;
    border: none;
    border-radius: 60px;
    padding: 14px 24px;
    font-size: 15px;
    font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
    cursor: pointer;
    box-shadow:
        0 6px 24px rgba(233, 69, 96, 0.45),
        0 2px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    line-height: 1;
    user-select: none;
    -webkit-user-select: none;
}

.arr-fab:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow:
        0 10px 32px rgba(233, 69, 96, 0.55),
        0 4px 12px rgba(0, 0, 0, 0.25);
}

.arr-fab:active {
    transform: translateY(-1px) scale(0.97);
}

.arr-fab-inner {
    display: flex;
    align-items: center;
    gap: 10px;
}

.arr-fab-icon {
    font-size: 16px;
    line-height: 1;
}

.arr-fab-text {
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
}

.arr-fab.arr-hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

@keyframes arr-pulse {
    0%, 100% { box-shadow: 0 6px 24px rgba(233, 69, 96, 0.45); }
    50%      { box-shadow: 0 6px 32px rgba(233, 69, 96, 0.7); }
}

.arr-fab.arr-reading {
    animation: arr-pulse 1.8s ease-in-out infinite;
    background: linear-gradient(135deg, #533483 0%, #0f3460 100%);
}

@media (max-width: 600px) {
    .arr-fab {
        bottom: 20px;
        left: 16px;
        padding: 12px 20px;
    }
    .arr-fab-text {
        font-size: 13px;
    }
}