@charset "UTF-8";

html {
    font-size: 100%; 
}
body {
    background-image: url(../img/background1.png);
    background-size: cover;
    background-position: center; /* 大事 */
    object-fit: cover;
    color: #fff;
    font-family: 'Bebas Neue', sans-serif;
}
a {
    color: #fff;
    text-decoration: none;
}
img {
    width: 100%;
    vertical-align: bottom;
}
li {
    list-style: none;
}

/* header------------- */
header {
    width: 100%;
    height: 80px;
    position: fixed;
    top: 0;
    left: 0;
    background-color: #1B1A4F;
    z-index: 10;
    display: flex;
    align-items: center;
}
header img {
    width: 80px;
    height: 80px;
}
header h1 {
    width: 80px;
}
header .menu-list {
    position: absolute;
    right: 0;
    display: flex;
}
header .menu-list li {
    font-size: 1.5rem;
    margin-right: 30px;
}
.hamburger {
    display: none;
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background: transparent;
    cursor: pointer;
    z-index: 20;
}
.hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    margin: 6px auto;
    background: #fff;
    transition: transform .25s ease, opacity .25s ease;
}
#mask {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    transition: .25s;
}

/* main----------------- */
.wrapper {
    padding-inline: 3%;
    margin: 0 auto;
    height: 100%;
}
.sec-title {
    font-size: 3rem;
    position: relative;
    display: table;  /* 大事 */
    margin: 0 auto 20px;
    font-weight: 600;
    letter-spacing: 0.08em;
    line-height: 1.1;
    margin-bottom: 40px;
}
.sec-title:before {
    content: "";
    width: 100%;
    height: 3px;
    background-color: #fff;
    position: absolute;
    top: calc(100% - 5px);
    left: 50%;
    transform: translateX(-50%);
}
.btn, .add-cart-btn {
    transform: scale(0.95);
}

/* mainvisual */
.mainvisual {
    width: 100%;
    height: calc(100vh - 80px);
    color: #fff;
    margin-top: 80px;
    margin-bottom: 80px;
    justify-content: center;
    position: relative;
    object-fit: cover;
    background-image: url(../img/mainvisual1.png);
    background-size: cover;      /* 一面に広げる */
    background-position: center; /* 中央基準 */
    background-repeat: no-repeat;
}
.mainvisual .mainvisu-text {
    position: absolute;
    left: 8%;
    top: 25%;
    white-space: nowrap;
}
.mainvisual p {
    font-size: 1.5rem;
    padding-top: 10px;
    padding-left: 20px;
}
.mainvisual h1 {
    font-size: 5rem;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 800;
    letter-spacing: 0.04em;
}
.mainvisual h1 span {
    display: block;
    padding-left: 110px;
}
.mainvisual .btn {
    font-family: 'Roboto', sans-serif;
    font-weight: bold;
    display: block;
    width: 250px;
    color: #000;
    background-color: #CFFE36;
    border-radius: 20px;
    text-align: center;
    padding: 15px 0;
    margin: 30px auto 0;
}
.mainvisual .btn:hover {
    border:  3px solid #cffe36;
    color: #cffe36;
    background-color: #000;
}
.mainvisual img {
    width: 35%;
}

/* introduce */
#introduce {
    background: rgba(0, 0, 0, 0.5);
    width: 100%;
    padding: 40px 0;
    margin-bottom: 80px;
}
#introduce .intro-box {
    display: flex;
    justify-content: space-evenly;
}
#introduce .intro-img {
    max-width: 40%;
}
#introduce .intro-img p {
    font-size: 1.2rem;
    text-align: center;
    padding-left: 70px;
} 
#introduce .feature {
    width: 40%;
    padding-top: 40px;
    white-space: nowrap;
}
#introduce .feature li {
    font-size: 2.5rem;
}

/* review */
#review {
    background: rgba(0, 0, 0, 0.5);
    width: 100%;
    padding: 40px 0;
    margin-bottom: 80px;
}
#review img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
}
#review .review-player1 {
    object-position: 70% 50%;
}
#review .review-player2 {
    object-position: center top;
}
.review1 {
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin-left: 80px;
    font-family: 'Noto Sans JP', sans-serif;
}
.review2 {
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-top: 40px;
    margin-right: 80px;
    font-family: 'Noto Sans JP', sans-serif;
}
.review1 img {
    margin-right: 30px;
}
.review2 img {
    margin-left: 30px;
}
.review1 p:last-child {
    margin-top: 10px;
    font-size: 0.75rem;
    text-align: right;
}
.review2 p:last-child {
    margin-top: 10px;
    font-size: 0.75rem;
    text-align: right;
}
.slide-left {
  animation: slide-left 1.5s ease-out 0s 1 forwards;
}
@keyframes slide-left {
  0% {
    transform: translateX(-50%);
  }

  100% {
    opacity: 1;
    transform: translateX(0);
  }
}
.slide-right {
  animation: slide-right 1.5s ease-out 0s 1 forwards;
}

@keyframes slide-right {
  0% {
    transform: translateX(50%);
  }

  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

/* color */
#shop {
    margin-bottom: 80px;
    padding: 40px 0;
    background: rgba(0, 0, 0, 0.5); 
}
#shop p {
    text-align: center;
}
#shop .spike-name {
    font-size: 3rem;
    margin-top: 40px;
}
#shop .price {
    font-size: 2rem;
    margin-bottom: 40px;
    font-family: 'Roboto', sans-serif;
}
#shop .price span {
    font-size: 1rem;
    margin-left: 20px;
}
#shop .shop-box {
    display: flex;
    justify-content: space-around;
}
#shop .shop-box .item {
    width: 30%;
}
#shop .shop-box .item p{
    font-size: 20px;
    letter-spacing: 0.1em;
    text-shadow: 0 10px 15px rgba(0,0,0,1);
}
.size {
    display:flex;
    justify-content: center;
    gap: 8px;
    margin: 30px auto 40px;
}
.size label {
    background: rgba(0, 0, 0, 0.5);
    color: #d4af37;
    border: 1px solid rgba(212, 175, 55, 0.6);
    padding: 10px 18px;
    font-family: 'Roboto', sans-serif;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.05em;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.25s ease;
}
.size label:hover { 
    background: rgba(212, 175, 55, 0.15);
    border-color: #d4af37;
}
.size input:checked+label {
    background: linear-gradient(135deg, #d4af37, #b8962e);
    color: #000;
    border-color: #d4af37;
    box-shadow: 0 0 12px rgba(212, 175, 55, 0.6);
}
.size input {
    display: none;
}
.add-cart-btn {
    display: block;
    margin: 0 auto;
    background: linear-gradient(135deg, #d4af37, #b8962e);
    color: #000;
    border: none;
    padding: 14px 28px;
    font-family: 'Roboto', sans-serif;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.08em;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.25s ease;
}
.add-cart-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(212, 175, 55, 0.4);
}
.add-cart-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 10px rgba(212, 175, 55, 0.3);
}

/* about */
#about {
    padding: 40px 0;
    margin-bottom: 180px;
}
#about h3 {
    margin-bottom: 15px;
    border-bottom: 1px solid #fff;
}
#about p {
    margin-bottom: 10px;
    font-family: 'Noto Sans JP', sans-serif;
}
#about .about-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5%;
}
#about .about-box .item {
    margin-bottom: 30px;
    background: rgba(0, 0, 0, 0.5); 
    padding: 30px;
    border-radius: 20px;
}
#about .about-box .item h3 {
    font-size: 2rem;
}
#about .about-box .item .p1 {
    font-weight: bold;
}
#about .about-box .item h3,
#about .about-box .item p {
    opacity: 0;
    transform: translateY(20px);
    transition: all 1s;
}

/* footer */
footer {
    width: 100vw;
    height: 80px;
    background-color: #1B1A4F;
    display: flex;
    align-items: center;
    position: relative;
    bottom: 0;
    left: 0;
    z-index: 10;
}
footer .copyright {
    margin: 0 auto;
    font-family: 'Noto Sans JP', sans-serif;
}
footer .sns-list {
    position: absolute;
    right: 0;
    display: flex;
}
footer .sns-list li {
    margin-right: 20px;
}
footer .sns-list img {
    border-radius: 50%;
    width: 48px;
    height: 48px;
}

/* resposive */
@media (max-width: 1000px) {
    .mainvisual {
        background-image: url(../img/mainvisual2.png);
    }
    .mainvisual .mainvisu-text {
        left: 50%;
        transform: translateX(-50%);
    }
}

@media (max-width: 860px) {
    /* header ------------*/
    header .menu-list {
        display: block;
        position: fixed;
        right: 0;
        top: 0;
        width: min(80vw, 320px); /*80vw と 320px のうち、小さい方を width にする*/
        height: 100vh;
        padding: 110px 24px 24px;
        background: rgba(0,0,0,0.8);
        backdrop-filter: blur(8px); /*その要素の“後ろにあるもの”をぼかす*/
        transform: translateX(100%);
        opacity: 0;
        transition: transform .3s ease;
        z-index: 20;
    }
    header .menu-list {
        margin: 0 0 18px;
        font-size: 1.4rem;
        letter-spacing: .06em;
    }
    .hamburger {
        display: block;
    }
    .open .menu-list {
        transform: translateX(0);
        opacity: 1;
    }
    .open .menu-list li {
        margin-bottom: 20px;
        border-bottom: 1px solid #fff;
    }
    .open #mask {
        display: block;
    }
    .open .hamburger span:nth-child(1){
        transform: translateY(8px) rotate(45deg);
    }
    .open .hamburger span:nth-child(2){
        opacity: 0;
    }
    .open .hamburger span:nth-child(3){
        transform: translateY(-8px) rotate(-45deg);
    }

    /* main --------------*/
    .mainvisual {
        height: 800px;
    }
    /* introduce */
    #introduce {
        padding: 20px 0;
    }
    #introduce .intro-box {
        flex-direction: column;
        align-items: center;
    }
    #introduce .intro-img {
        max-width: 60%;
    }
    #introduce .feature {
        width: 60%;
    }
    /* review */
    #review {
        padding: 20px 0;
    }
    .review1 {
        margin-left: 0;
    }
    .review2 {
        margin-right: 0;
    }
    #review img {
        width: 120px;
        height: 120px;
    }
    .review1 img {
        margin-right: 20px;
    }
    .review2 img {
        margin-left: 20px;
    }

    /* shop */
    #shop {
        padding: 20px 0;
    }
    #shop .shop-box .item {
        width: 28%;
    }
    .size label {
        padding: 8px 14px;
        font-size: 10px;
    }
    

    /* about */
    #about {
        padding: 20px 0;
    }
}

@media (max-width: 500px) {
    .sec-title {
        font-size: 2rem;
    }

    /* mainvisual */
    .mainvisual {
        height: 600px;
    }
    .mainvisual h1 {
        font-size: 3rem;
    }
    .mainvisual .btn {
        width: 200px;
        padding: 10px 0;
        border-radius: 15px;
    }

    /* introduce */
    #introduce .feature {
        width: 80%;
        padding-top: 20px;
    }
    #introduce .feature li {
        font-size: 2rem;
    }

    /* review */
    #review {
        font-size: 0.6rem;
    }
    #review img {
        width: 80px;
        height: 80px;
    }

    /* shop */
    #shop .spike-name {
        font-size: 2rem;
    }
    #shop .price {
        font-size: 1rem;
    }
    #shop .shop-box {
        flex-direction: column;
        justify-content: none;
        align-items: center;
    }
    #shop .shop-box .item {
        width: 80%;
        margin-top: 50px;
    }
    #shop .shop-box .item:first-child{
        margin-top: 0;
    }
    .size {
        margin: 15px auto 20px;
    }

    /* about */
    #about .about-box {
        grid-template-columns: 1fr;
        gap: 2%;
    }
    #about .about-box .item {
        margin-bottom: 15px;
        padding: 15px;
    }
    #about .about-box .item h3 {
        font-size: 1.75rem;
    }

    /* footer */
    footer .copyright {
        font-size: 0.75rem;
    }
    footer .sns-list li {
        margin-right: 15px;
    }
    footer .sns-list img {
        width: 32px;
        height: 32px;
    }
}