.header {
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0, 255, 255, 0.1);

    .navContainer {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        height: 90px;

        .logo {
            a {
                display: block;
                
                img {
                    width: 90px;
                    width: 15%;
                    transition: opacity 0.3s ease;
                    
                    &:hover {
                        opacity: 0.8;
                    }
                }
            }
        }

        .navMenu {
            display: flex;
            gap: 20px;
            align-items: center;
            flex-wrap: nowrap;
            white-space: nowrap;

            li {
                a {
                    color: #1a1a2e;
                    font-weight: 500;
                    font-size: 0.9rem;
                    transition: color 0.3s ease;
                    position: relative;

                    &:hover {
                        color: #00CCCC;
                    }

                    &::after {
                        content: '';
                        position: absolute;
                        bottom: -5px;
                        left: 0;
                        width: 0;
                        height: 2px;
                        background: linear-gradient(90deg, #00FFFF, #00CCCC);
                        transition: width 0.3s ease;
                    }

                    &:hover::after {
                        width: 100%;
                    }
                }

                .reserveBtn {
                    background: linear-gradient(45deg, #00CCCC, #00FFFF);
                    color: #1a1a2e;
                    padding: 8px 16px;
                    border-radius: 25px;
                    font-weight: bold;
                    font-size: 0.9rem;
                    transition: all 0.3s ease;
                    box-shadow: 0 4px 15px rgba(0, 204, 204, 0.3);

                    &:hover {
                        background: linear-gradient(45deg, #009999, #00CCCC);
                        transform: translateY(-2px);
                        box-shadow: 0 6px 20px rgba(0, 204, 204, 0.5);
                    }

                    &::after {
                        display: none;
                    }
                }
            }
        }
    }
}

/* レスポンシブ設定 */
@media (max-width: 768px) {
    .header {
        .navContainer {
            padding: 0 15px;
            height: 90px;

            .logo {
                a {
                    img {
                        width: 80px;
                        height: 80px;
                    }
                }
            }

            .navMenu {
                gap: 8px;

                li a {
                    font-size: 0.8rem;
                }

                .reserveBtn {
                    padding: 6px 10px;
                    font-size: 0.8rem;
                }
            }
        }
    }
}

@media (max-width: 480px) {
    .header {
        .navContainer {
            height: 80px;

            .logo {
                a {
                    img {
                        width: 70px;
                        height: 70px;
                    }
                }
            }

            .navMenu {
                gap: 6px;

                li a {
                    font-size: 0.7rem;
                }

                .reserveBtn {
                    padding: 5px 8px;
                    font-size: 0.7rem;
                }
            }
        }
    }
}