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

/* Desktop / Mobile wrappers: show/hide based on 768px breakpoint */
.site-desktop {
    display: block;
}

.site-mobile {
    display: none;
}

/* 폰트 정의 */
.font-istok {
    font-family: 'Istok Web', sans-serif;
}

/* Pretendard helper class (loaded via CDN in index.html) */
.font-pretendard {
    font-family: 'Pretendard', sans-serif;
}

.font-inter {
    font-family: 'Inter', sans-serif;
}

.font-anton {
    font-family: 'Anton SC', sans-serif;
}

/* 폰트 굵기 클래스 */
.font-regular {
    font-weight: 400;
}

.font-bold {
    font-weight: 700;
}

.font-extrabold {
    font-weight: 800;
}

/* 폰트 조합 클래스 (편의를 위해) */
.font-istok-regular {
    font-family: 'Istok Web', sans-serif;
    font-weight: 400;
}

.font-istok-bold {
    font-family: 'Istok Web', sans-serif;
    font-weight: 700;
}

.font-inter-regular {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
}

.font-inter-bold {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
}

.font-inter-extrabold {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
}

.font-anton-regular {
    font-family: 'Anton SC', sans-serif;
    font-weight: 400;
}

/* 인트로 비디오 전체 화면 오버레이 */
.intro-video-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: #000;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    opacity: 1;
}

.intro-video-overlay.is-active {
    display: flex;
}

/* 시작은 즉시 노출, 끝날 때만 페이드 아웃 */
.intro-video-overlay.is-fading-out {
    transition: opacity 0.6s ease;
    opacity: 0;
}

.intro-video-overlay video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

html,
body {
    width: 100%;
    height: auto;
    background-color: #000;
}

.container {
    width: 100%;
    height: 100vh;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.sticky-header {
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 0 7%;
}

/* 2·3번째 섹션 밖으로 스크롤 시 SERVICE OVERVIEW 행 숨김 */
.header-service-overview--hidden {
    display: none !important;
}

.sub-container {
    height: fit-content;
    background-image: url('images/sub-background-texture.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    margin: 0 2.04vw;
    border: 8px solid #898989;
}

.project-container {
    width: 100%;
    height: fit-content;
    background-image: url('images/sub-background-texture.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}


/* 상단 헤더 */
.header {
    display: flex;
    color: #ffffff;
    margin: 0 2.7vw;
}

/* Minimal layout styles for roles section (no font sizes/weights so user can control those) */
.roles-section {
    display: flex;
    flex-direction: column;
}

.role-row {
    display: flex;
    align-items: center;
}

.role-icon {
    display: block;
    min-width: 8.16vw;
    /* image sizing only; adjustable by user */
    height: auto;
}

.role-title {
    /* sizing and weight intentionally left to user */
    flex: 0 0 34%;
    font-size: 3.06vw;
    letter-spacing: 0.15vw;
}

.role-desc {
    /* description column grows to fill available space */
    flex: 1 1 40%;
    font-size: 1.28vw;
}


/* Client logos grid */
.client-logos-container {
    padding: 2.04vw 0;
}

.client-logos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(7.14vw, 1fr));
    gap: 1.43vw 1.84vw;
    align-items: center;
    justify-items: center;
    padding: 1.84vw 3.47vw;
}

.client-logos .logo-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.client-logos .logo-item img {
    max-width: 100%;
    max-height: 3.27vw;
    /* keep logos visually similar height; user can change */
    height: auto;
    object-fit: contain;
    display: block;
}

/* Project Grid */
.project-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.82vw;
    position: relative;
}

.project-grid-item {
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
    background-color: transparent;
}

/* 장식 요소가 있는 그리드 아이템은 overflow visible */
.project-grid-item[style*="position: relative"] {
    overflow: visible;
}

.project-grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.project-grid-item.empty {
    background-color: transparent;
}

/* 그리드 장식 요소 (화살표, 체크마크 등) */
.grid-decoration {
    position: absolute;
    pointer-events: none;
    z-index: 10;
}

@media (max-width: 768px) {
    .site-desktop {
        display: none;
    }

    .site-mobile {
        display: block;
    }

    .project-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .container {
        height: fit-content;
    }

    .sticky-header {
        padding: 0 4.5%;
    }

    /* 모바일 메뉴 오버레이 */
    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        z-index: 2000;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        overflow: hidden;
        background-image: url('images/mobile/background-texture.png');
        background-size: cover;
        background-position: center;
        color: #FDFDFD;
    }

    .mobile-menu-overlay.open {
        transform: translateX(0);
    }

    .mobile-menu-close {
        position: absolute;
        top: 30px;
        right: 14px;
        width: 20px;
        height: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 2001;
    }

    .mobile-menu-content {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        height: 100%;
        padding: 0 16px;
    }

    .mobile-menu-item {
        font-size: 75px;
        letter-spacing: 5%;
        transition: opacity 0.2s;
        width: 100%;
        text-align: center;
        padding: 11px 0;
    }

    .mobile-menu-item:hover {
        opacity: 0.7;
    }

    .mobile-menu-item:active {
        opacity: 0.5;
    }
}