/* 초기세팅 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background: #02030f;
    color: #fff;
    font-family: "pretendard", sans-serif;
    overflow-x: hidden;
    cursor: none;
}

main {
    position: relative;
    z-index: 1;
    background: transparent;
}

/* ===== Cursor Design Start ===== */
.cursor {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: white;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    mix-blend-mode: difference;
    z-index: 99999;
    transform: translate(-50%, -50%) scale(1);
    transition: transform .3s ease;
}

.cursor.active {
    transform: translate(-50%, -50%) scale(1.5);
}

/* 우주 배경 */
.space_bg {
    position: fixed;
    inset: 0;
    z-index: -3;
    background:
        radial-gradient(circle at 20% 20%, rgba(142, 45, 226, 0.45), transparent 30%),
        radial-gradient(circle at 80% 30%, rgba(0, 212, 255, 0.35), transparent 28%),
        radial-gradient(circle at 50% 80%, rgba(255, 0, 153, 0.3), transparent 35%),
        linear-gradient(120deg, #02030f, #09001f, #000814, #160029);
    background-size: 200% 200%;
    animation: spaceMove 12s ease-in-out infinite alternate;
}

.space_bg::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 50% 100%, rgba(91, 120, 255, 0.6), transparent 28%),
        radial-gradient(circle at 50% 110%, rgba(255, 255, 255, 0.35), transparent 12%);
    filter: blur(2px);
}

.space_bg::after {
    content: "";
    position: relative;
    width: 700px;
    height: 700px;
    right: -220px;
    bottom: -260px;
    border: 1px solid rgba(154, 105, 255, 0.35);
    border-radius: 50%;
    box-shadow:
        0 0 80px rgba(111, 68, 255, 0.35),
        inset 0 0 80px rgba(0, 212, 255, 0.12);
    animation: planetSpin 18s linear infinite;
}

/* 별 */
.stars,
.stars2 {
    position: fixed;
    inset: 0;
    z-index: -2;
    background-image:
        radial-gradient(#fff 1px, transparent 1px),
        radial-gradient(rgba(174, 216, 255, 0.9) 1px, transparent 1px),
        radial-gradient(rgba(211, 147, 255, 0.8) 1px, transparent 1px);
    background-size: 80px 80px, 130px 130px, 190px 190px;
    background-position: 0 0, 40px 60px, 90px 120px;
    opacity: 0.8;
    animation: starMove 40s linear infinite;
}

.stars2 {
    z-index: -1;
    opacity: 0.45;
    filter: blur(1px);
    animation-duration: 70s;
}

/* Header */
header {
    width: 100%;
    height: 100px;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    background: rgba(2, 3, 15, 0.72);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header_inner {
    max-width: 1440px;
    height: 100px;
    padding: 0 40px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    width: 72px;
    height: 72px;
    display: block;
    filter: drop-shadow(0 0 18px #a6ff00);
}

.menu {
    display: flex;
    gap: 48px;
    list-style: none;
}

.menu a {
    color: white;
    text-decoration: none;
    font-family: "Anton", sans-serif;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2px;
    transition: 0.3s;
}

.menu a:hover {
    color: #9dff00;
    text-shadow: 0 0 14px #9dff00;
}

.right_menu {
    display: flex;
    align-items: center;
    gap: 48px;
}

.contact_btn {
    padding: 18px 40px;
    border: 2px solid #fff;
    border-radius: 999px;
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
    transition: 0.3s;
}

.contact_btn:hover {
    background: #9dff00;
    border-color: #9dff00;
    color: #000;
    box-shadow: 0 0 24px rgba(157, 255, 0, 0.75);
}

/* Hero */
.hero {
    min-height: 720px;
    padding-top: 140px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero video {
    width: 50%;
    max-width: 700px;
    height: auto;
    display: block;
    border-radius: 20px;
}

.hero img {
    width: 100%;
    max-width: 675px;
    height: auto;
    display: block;
    filter: drop-shadow(0 0 60px rgba(133, 94, 255, 0.45));
    animation: float 4s ease-in-out infinite;
}

/* About */
.about {
    padding: 80px 40px 180px;
}

.about_text {
    text-align: center;
}

.about_text p {
    font-size: 24px;
    font-weight: 200;
    line-height: 1.6;
    color: #fff;
    text-shadow: 0 0 16px rgba(120, 170, 255, 0.45);
}

.about_text strong {
    font-weight: 800;
}

.about_stats {
    width: 100%;
    max-width: 1080px;
    margin: 90px auto 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.stat_item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat_label {
    font-family: "Anton", sans-serif;
    font-size: 24px;
    line-height: 1;
    color: #a8a2ff;
    margin-bottom: 20px;
    text-shadow: 0 0 14px rgba(168, 162, 255, 0.8);
}

.stat_item h2 {
    font-size: 76px;
    font-weight: 700;
    line-height: 1;
    color: #fff;
    text-shadow:
        0 0 18px rgba(255, 255, 255, 0.4),
        0 0 40px rgba(106, 90, 255, 0.55);
}

.stat_divider {
    width: 1px;
    height: 140px;
    background: linear-gradient(transparent, #fff, transparent);
    flex-shrink: 0;
    box-shadow: 0 0 18px rgba(255, 255, 255, 0.7);
}

/* Core */
.core {
    padding: 160px 40px 220px;
}

.core_title {
    text-align: center;
    margin-bottom: 70px;
}

.core_title h2 {
    font-family: "Anton", sans-serif;
    font-size: 96px;
    line-height: 1;
    color: #fff;
    text-shadow:
        0 0 20px rgba(255, 255, 255, 0.35),
        0 0 50px rgba(155, 90, 255, 0.65);
}

.core_title p {
    margin-top: 24px;
    font-size: 24px;
    font-weight: 500;
}

.core_card {
    max-width: 1360px;
    margin: 0 auto 40px;
    display: flex;
    border-radius: 24px;
    overflow: hidden;
    background: rgba(10, 12, 30, 0.68);
    border: 1px solid rgba(174, 139, 255, 0.35);
    box-shadow:
        0 0 40px rgba(96, 73, 255, 0.25),
        inset 0 0 40px rgba(255, 255, 255, .04);
    backdrop-filter: blur(18px);
}

.core_content {
    width: 50%;
    padding: 84px 64px;
}

.core_content h3 {
    font-size: 38px;
    margin-bottom: 32px;
}

.core_content p {
    font-size: 20px;
    line-height: 1.7;
    font-weight: 500;
}

.technique {
    margin-top: 100px;
}

.technique h4 {
    font-size: 20px;
    margin-bottom: 20px;
}

.tag_wrap {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.tag_wrap span {
    padding: 10px 20px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(166, 255, 0, 0.35);
    font-size: 14px;
    font-weight: 700;
    box-shadow: 0 0 14px rgba(166, 255, 0, 0.15);
}

.core_img {
    width: 50%;
    position: relative;
}

.core_img::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 20%, rgba(157, 255, 0, 0.22), transparent 30%),
        linear-gradient(120deg, rgba(90, 0, 255, 0.2), transparent);
}

.core_img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    opacity: 0.85;
}

/* Animation */
@keyframes spaceMove {
    0% {
        background-position: 0% 30%;
    }

    100% {
        background-position: 100% 70%;
    }
}

@keyframes starMove {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(-300px);
    }
}

@keyframes planetSpin {
    0% {
        transform: rotate(0deg) scale(1);
    }

    100% {
        transform: rotate(360deg) scale(1.05);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-24px);
    }
}

/* === Contact Start === */

.contact {
    max-width: 1440px;
    width: 100%;
    margin: 0 auto;
    padding: 200px 40px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.contact_title {
    text-align: center;
}

.contact_title h2 {
    font-family: "Anton", sans-serif;
    font-size: 76px;
    line-height: 1.1;
    color: #fff;
}

.contact_description {
    margin-top: 48px;
    text-align: center;
}

.contact_description p {
    font-size: 24px;
    line-height: 1.4;
    color: #fff;
    margin-top: 8px;
}

.contact_button {
    margin-top: 80px;
    width: 420px;
    height: 96px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid #fff;
    border-radius: 999px;
    text-decoration: none;
    font-family: "Anton", sans-serif;
    font-size: 36px;
    color: #fff;
    transition: 0.3s;
}

.contact_button:hover {
    background: #fff;
    color: #000;
}

.character_left,
.character_right {
    position: absolute;
    width: 180px;
}

.character_left {
    left: 40px;
    bottom: 120px;
}

.character_right {
    right: 0;
    top: 140px;
    transform: rotate(17deg);
}

/* === Contact End === */


/* === Footer Start === */

.footer {
    padding: 40px;
    overflow: hidden;
    position: relative;

    background:
        radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.65), transparent 18%),
        radial-gradient(circle at 85% 15%, rgba(0, 210, 255, 0.85), transparent 24%),
        radial-gradient(circle at 20% 90%, rgba(255, 241, 87, 0.95), transparent 26%),
        linear-gradient(120deg, #62dfff, #fff45c, #bbff00, #78ffcf);
    background-size: 240% 240%;
    animation: footerGradientMove 8s ease-in-out infinite alternate;
}

.footer_inner {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px;
}

.footer_info h3 {
    font-size: 24px;
    font-weight: 700;
    color: #000;
    margin-bottom: 24px;
}

.footer_info p {
    font-size: 16px;
    line-height: 2;
    color: #000;
}

.footer_info strong {
    font-weight: 700;
    margin-right: 8px;
}

.footer_divider {
    width: 100%;
    height: 1px;
    background-color: #000;
    margin: 48px 0;
}

.footer_bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.copyright {
    font-size: 16px;
    color: #000;
}

.footer_tag {
    display: flex;
    gap: 12px;
}

.footer_tag span {
    padding: 4px 20px;
    border-radius: 999px;
    background: #000;
    color: #fff;
    font-size: 18px;
    font-weight: 600;
}

.footer_logo img {
    width: 100%;
    display: block;
}


/* === Footer End === */

@keyframes footerGradientMove {
    0% {
        background-position: 0% 40%;
    }

    50% {
        background-position: 100% 60%;
    }

    100% {
        background-position: 30% 100%;
    }
}