@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable.min.css");

/* 기본 스타일 초기화 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: var(--background);
    /* Pretendard 우선하는 경우 */
    font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
}

a {
    text-decoration: none;
    color: var(--black);
    cursor: pointer;
}

:root {
    --background: #000;
    --component01: #111;
    --component02: #222;
    --text01: #FFF;
    --text02: #AAA;
    --button: rgba(0, 0, 0, 0.5);
    --border: 1px solid #555;
}

/* 폰트 크기 */
h1 {
    font-size: 4rem;
    /* 64px */
    font-weight: 400;
    /* Regular */
    letter-spacing: -0.03em;
    /* 자간-3% */
    line-height: 1.5;
    /* 행간 1.5% */
}

h2 {
    font-size: 3rem;
    /* 48px */
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1.5;
}

h3 {
    font-size: 2.5rem;
    /* 40px */
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1.5;
}

h4 {
    font-size: 2rem;
    /* 32px */
    font-weight: 400;
    letter-spacing: -0.05em;
    line-height: 1.5;
}

h5 {
    font-size: 1.75rem;
    /* 28px */
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1.5;
}

h6 {
    font-size: 1.5rem;
    /* 24px */
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1.5;
}

p {
    font-size: 1.25rem;
    /* 20px */
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1.5;
}

.caption {
    font-size: 1.125rem;
    /* 18px */
    font-weight: 400;
    letter-spacing: -0.01em;
    /* 자간-1% */
    line-height: 1.5;
}

/* header 고정 스타일 */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border: var(--border);
    border-radius: 100px;
    max-width: 1400px;
    max-height: 64px;
    width: 100%;
    height: 100%;
    position: fixed;
    top: 4%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
}

.gnb-left {
    display: flex;
    align-items: center;
}

.gnb-left a {
    margin: 0 16px 0 32px;
    width: 15%;
}

.gnb-left p {
    font-weight: 300;
    color: var(--text01);
    margin-right: 16px;
}

.gnb-left a img {
    width: 100%;
    height: auto;
}

.gnb-right {
    display: flex;
    align-items: center;
    gap: 20px;
    color: var(--text02);
    margin-right: 8px;
}

.gnb-right a {
    width: 98px;
    text-align: center;
}

.gnb-right #current p {
    color: var(--text01);
    font-weight: 600;
}

.dmd2023 {
    background: var(--background);
    border: var(--border);
    border-radius: 50px;
    margin-left: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.dmd2023 p {
    margin: 0 14px 0 24px;
    padding: 8px 0;
    color: var(--text01);
}

.dmd2023 i {
    margin-left: 16px;
    font-size: 1rem;
}

.menu {
    position: relative;
    width: 24px;
    height: 24px;
    cursor: pointer;
    z-index: 2000;
    display: none;
}

span {
    display: block;
    width: 100%;
    height: 4px;
    margin-bottom: 6px;
    background: var(--text01); /* 기존 색상 변수 사용 */
    border-radius: 2px;
    transition: all 0.3s ease;
    position: relative;
}

span:last-child {
    margin-bottom: 0;
}

.active span:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
}

.active span:nth-child(2) {
    opacity: 0;
}

.active span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
}

.not-active span:nth-child(1),
.not-active span:nth-child(3) {
    transform: none;
}

.not-active span:nth-child(2) {
    opacity: 1;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #0009;
    backdrop-filter: blur(10px);
    padding: 50% 0;
    opacity: 0;
    z-index: 1000;
    transform: translateY(-100%);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.mobile-menu a {
    display: block;
    padding: 20px;
    color: var(--text01);
    text-align: center;
    font-size: 1.5rem;
    font-weight: 400;
    text-decoration: none;
    transition: all .7s ease;
}

.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

section {
    width: 100%;
    height: 100vh;
}

#myBtn {
    display: none;
    /* 기본적으로 숨김 */
    position: fixed;
    bottom: 30px;
    right: 20px;
    z-index: 99;
    border: var(--border);
    background-color: #000;
    color: white;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 16px;
    transition: opacity 0.3s ease, transform 0.3s ease;
    /* 나타날 때 부드러운 효과 */
}

#myBtn.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

#myBtn.hide {
    opacity: 0;
    transform: translateY(10px);
}

/* -------------------- 반응형 -------------------- */
@media screen and (max-width: 768px) {
    /* 폰트 크기 */
    h1 {
        font-size: 40px;
    }

    h2 {
        font-size: 36px;
    }

    h3 {
        font-size: 32px;
    }

    h4 {
        font-size: 28px;
    }

    h5 {
        font-size: 24px;
    }

    h6 {
        font-size: 20px;
    }

    p {
        font-size: 16px;
    }

    .caption {
        font-size: 12px;
    }

    header {
        display: flex;
        border-radius: 50px;
        width: 89.4%;
        height: 100%;
        min-height: 44px;
    }

    .gnb-left a {
        margin: 0 0px 0 10px;
    }

    .gnb-left a img {
        width: 100%;
        height: auto;
        margin-left: 20px;
    }

    .gnb-left p {
        display: none;
    }

    .gnb-left img {
        width: 100%;
        min-width: 70px;
        height: auto;
        margin-left: 20px;
    }

    .gnb-right {
        display: none;
    }

    .menu {
        display: block;
        position: absolute;
        right: 20px;
        color: var(--text01);
        font-size: 24px;
    }

    .mobile-menu a:hover {
        font-weight: 700;
        color: var(--text01);
    }
}

/* -------------------- contetns 01 -------------------- */

#top-container {
    position: absolute; 
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%; 
    height: 540px; 
    display: flex;
    justify-content: center;
    z-index: 1; 
    pointer-events: none; 
}

.top-image {
    width: 100%; 
    height: 540px;  
    display: block; 
}

.top-text {
    position: absolute;
    top: 300px;
    left: 50%;
    transform: translateX(-50%); 
    font-family: 'Pretendard', sans-serif; 
    font-weight: bold; 
    font-size: 60px;
    color: #ffffff; 
    z-index: 2; 
    white-space: nowrap; 
}

.top-subtext {
    position: absolute; 
    top: 390px; 
    left: 50%; 
    transform: translateX(-50%); 
    font-family: 'Pretendard', sans-serif; 
    font-weight: regular; 
    font-size: 20px; 
    color: #aaaaaa; 
    z-index: 2; 
    text-align: center;
    line-height: 36px;
    white-space: normal; 
    max-width: 590px;
    width: 100%;
}

.chevron-icon {
    position: absolute;
    top: 490px; 
    left: 50%;
    transform: translateX(-50%);
    font-size: 20px;
    color: #555555;
    z-index: 2;
}

/* -------------------- contetns 02 -------------------- */

#canvas-container {
    width: 100%;
    display: flex; 
    justify-content: center; 
    position: relative; 
    margin-top: -200px;
}

#canvas {
    position: relative;
    z-index: 0; 
    border: 1px solid #000; 
    width: 100%;
    height: auto; 
    overflow: auto; 
    display: block; 
}

canvas {
    display: block;
    position: absolute; 
    top: 0; 
    left: 50%; 
    transform: translate(-50%, 10%);
    z-index: 0; 
}




/* -------------------- contetns 03 -------------------- */

#button-container {
    display: flex; 
    align-items: center; 
    justify-content: center; 
    gap: 20px; 
    position: absolute;
    top: 650px;
    left: 50%;
    width: 100%;
    transform: translateX(-50%); 
    z-index: 1;
    pointer-events: none; 
}

#box-container {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    
}

#interaction-button {
    font-family: 'Pretendard', sans-serif;
    font-weight: 600; /* Semi Bold*/
    font-size: 28px;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5); /* 텍스트 그림자 추가 */
    color: #ffffff;
    display: flex; 
    align-items: center; 
    justify-content: center; 
    white-space: nowrap; 
    background-color: transparent; 
    border: none; 
    
}

.arrow {
    font-size: 28px; 
    color: #ffffff; 
    pointer-events: auto;
}

.arrow-left {
    margin-right: 60px; 
}

.arrow-right {
    margin-left: 60px; 
}

/* -------------------- contetns 04 -------------------- */

#list-container {
    display: flex; 
    align-items: center;
    white-space: nowrap;
    position: absolute; 
    right: calc(12%); 
    pointer-events: auto;
}

.list-icon {
        width: 24px;
        height: auto;
        margin-right: 10px;
    }

.boton-elegante {
    display: inline-flex; 
    align-items: center;
    padding: 15px 25px;
    border: 2px solid #555555;
    background-color: rgba(85, 85, 85, 0.5);
    color: #ffffff;
    font-size: 20px;
    cursor: pointer;
    border-radius: 50px;
    transition: all 0.4s ease;
    outline: none;
    position: relative;
    overflow: hidden;
    font-weight: bold;
}

.boton-elegante::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        circle,
        rgba(255, 255, 255, 0.25) 0%,
        rgba(255, 255, 255, 0) 70%
    );
    transform: scale(0);
    transition: transform 0.5s ease;
}

.boton-elegante:hover::after {
    transform: scale(4);
}

.boton-elegante:hover {
    border-color: #666666;
    background: #292929;
}



/* --------------------초소형 기기용 스타일 (768px 이하) -------------------- */
@media (max-width: 768px) {
    #top-container {
        height: 405px; 
    }

    .top-image {
        height: 400px;  
    }

    .top-text {
        top: 210px; 
        font-size: 40px; 
        white-space: nowrap;
    }

    .top-subtext br {
        display: none; /* <br> 태그 숨기기 */
    }

    .top-subtext {
        top: 275px; 
        font-size: 16px; 
        line-height: 29px; 
        font-weight: 400; 
        max-width: 350px;
        width: 100%; 
    }

.chevron-icon {
    top: 380px; 
}

/* -------------------- contetns 02 -------------------- */

canvas {
    transform: translate(-50%, 30%);
}

/* -------------------- contetns 03 -------------------- */

    #button-container {
        top: 500px;
    }

    #interaction-button {
        font-size: 20px;
    }
    
    .arrow {
        font-size: 24px; 
    }
    
    .arrow-left {
        margin-right: 30px; 
    }
    
    .arrow-right {
        margin-left: 30px; 
    }
    
    /* -------------------- contetns 02 -------------------- */
    
    #list-container {
        right: calc(5%); 
        margin-top: 120px; 
    }
    
    .list-icon {
            width: 24px;
            margin-right: 0px;
        }
    
    .boton-elegante {
        padding: 12px;
    }
}