/* ============================================
   Fixed Floating LINE Button (Scroll Follow)
   ============================================ */

.fixed-line-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(100px);
    transition: all 0.3s ease;
}

.fixed-line-button.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.fixed-line-button .btn-fixed-line {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1rem 1.8rem;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 50px;
    border: 2px solid #06c755;
    background: #06c755;
    color: #ffffff !important;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(6, 199, 85, 0.4);
    text-decoration: none;
    animation: pulse-float 2s ease-in-out infinite;
}

.fixed-line-button .btn-fixed-line:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 30px rgba(6, 199, 85, 0.6);
    background: #05b34c;
}

.fixed-line-button .btn-fixed-line svg {
    flex-shrink: 0;
}

@keyframes pulse-float {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(6, 199, 85, 0.4);
    }
    50% {
        box-shadow: 0 6px 30px rgba(6, 199, 85, 0.6);
    }
}

/* モバイル最適化 */
@media (max-width: 768px) {
    .fixed-line-button {
        bottom: 15px;
        right: 15px;
        left: 15px;
        width: auto;
    }
    
    .fixed-line-button .btn-fixed-line {
        width: 100%;
        padding: 1.2rem 1.5rem;
        font-size: 1.05rem;
        justify-content: center;
    }
}

/* タブレット */
@media (min-width: 769px) and (max-width: 1024px) {
    .fixed-line-button {
        bottom: 20px;
        right: 20px;
    }
}