    @import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,700;1,400&display=swap');

    :root {
        --logo-font: 'Helvetica Neue', Helvetica, Arial, sans-serif;
        --serif-font: 'Cormorant Garamond', serif;
        --text-color: #333;
    }
    body, html {
        margin: 0; padding: 0; width: 100%; height: 100%;
        font-family: var(--primary-font);
        background-color: #f0f0f0;
        color: var(--text-color);
    }
    * { box-sizing: border-box; }

    .mobile-view { display: block; width: 100%; height: 100%; }
    .desktop-view, .photo-viewer-modal { display: none; }

    .swiper { width: 100%; height: 100%; }
    .swiper-slide {
        width: 100%; height: 100%;
        background-size: cover; background-position: center;
    }
    .overlay-container {
        position: absolute; top: 0; left: 0;
        width: 100%; height: 100%;
        display: flex; justify-content: center; align-items: center;
        pointer-events: none;
    }
    .mobile-logo {
        position: absolute; top: 8px; font-size: 3.8rem;
        letter-spacing: 1px; color: #000; opacity: 0.8;
        z-index: 5; font-family: var(--logo-font);
    }
    .glass-ui {
        width: 75%; height: 28%; max-width: 400px; max-height: 720px;
        background: rgba(255, 255, 255, 0.15);
        backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(2px);
        border-radius: 25px;
        border: 1px solid transparent;
        border-image: linear-gradient(to bottom, rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0.05)) 1;
        box-shadow:
            inset -1.2px -1.2px 0px -1px rgba(255, 255, 255, 0.75),
            inset 1.2px 1.2px 0px -1px rgba(255, 255, 255, 0.75),
            0px 4px 4px rgba(0, 0, 0, 0.25);
        display: flex; flex-direction: column; align-items: center;
        padding: 30px 20px; transition: all 0.4s ease;
        z-index: 10;
    }
    .glass-ui.transparent {
        background: transparent; backdrop-filter: none; -webkit-backdrop-filter: none;
        box-shadow: none; border-image: none;
        /* 피드백 2: 투명 상태일 때 테두리를 투명하게 변경 */
        border-color: transparent;
    }
    .dynamic-content {
        flex-grow: 1; display: flex; justify-content: center; align-items: center;
        font-size: 5.04rem; font-family: var(--serif-font); font-weight: 700;
    }
    .footer-text {
        font-family: var(--serif-font); font-style: italic; flex-shrink: 0;
    }
    .glass-ui.transparent .dynamic-content,
    .glass-ui.transparent .footer-text {
        opacity: 0;
}

/* ======================================================= */
/*          (추가) 연락처 정보 표시를 위한 스타일             */
/* ======================================================= */
.dynamic-content.contact-mode {
    font-size: 0.9rem; /* 연락처 정보에 맞는 작은 폰트 크기 */
    font-family: var(--primary-font); /* 기본 폰트(Helvetica) 사용 */
    font-weight: normal; /* 볼드 처리 해제 */
    text-align: left; /* 왼쪽 정렬 */
    align-self: flex-start; /* 컨테이너의 왼쪽 상단에 가깝게 배치 */
    line-height: 1.8; /* 줄 간격 조정 */
    margin-top: 20px; /* 위쪽 여백 */
    width: 100%;
}

/* --- 데스크탑 뷰 스타일 (화면 너비 992px 이상) --- */
@media (min-width: 992px) {
    .mobile-view { display: none; }
    .desktop-view { display: flex; width: 100%; height: 100vh; }
    
    .sidebar {
        width: 260px;
        height: 100%;
        background-color: #e9e9e9;
        padding: 20px;
        overflow-y: auto;
        border-right: 1px solid #dcdcdc;
    }
    .sidebar-header { font-size: 0.8rem; color: #888; margin: 20px 0 8px 0; padding-left: 10px; text-transform: uppercase; }
    .sidebar-menu-item { display: block; text-decoration: none; color: var(--text-color); padding: 8px 10px; border-radius: 5px; margin-bottom: 4px; }
    .sidebar-menu-item.active, .sidebar-menu-item:hover { background-color: #dcdcdc; }
    .accordion-toggle { cursor: pointer; }
    .sub-menu { padding-left: 20px; max-height: 0; overflow: hidden; transition: max-height 0.3s ease-out; }
    .accordion.open .sub-menu { max-height: 500px; } /* 충분히 큰 값 */
    #likes-menu { display: none; } /* 기본 숨김 */
    #likes-menu.visible { display: block; animation: slideDown 0.5s ease; }
    @keyframes slideDown { from { transform: translateY(-10px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

    .main-content { flex-grow: 1; height: 100%; display: flex; flex-direction: column; }
    .main-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 30px;
        border-bottom: 1px solid #dcdcdc;
        background-color: rgba(245, 245, 245, 0.8);
        backdrop-filter: blur(10px);
    }
    .desktop-logo { font-size: 1.5rem; margin: 0;  font-family: var(--logo-font);}
    .icon-group .icon { font-size: 1.2rem; margin-left: 20px; cursor: pointer; }

    .content-display {
        flex-grow: 1;
        padding: 20px;
        overflow-y: auto;
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 20px;
    }
    .thumbnail {
        aspect-ratio: 3 / 4;
        background-size: cover;
        background-position: center;
        border-radius: 8px;
        cursor: pointer;
        position: relative;
    }
    .thumbnail-like-icon {
        position: absolute;
        left: 8px;
        bottom: 8px;
        font-size: 1.5rem;
        color: #fff;
        text-shadow: 0 0 4px rgba(0,0,0,0.7);
        opacity: 0;
        transition: opacity 0.2s;
    }
    .thumbnail:hover .thumbnail-like-icon { opacity: 1; }
    .thumbnail-like-icon.liked { opacity: 1; }

    .photo-viewer-modal {
        display: none; /* JS로 제어 */
        position: fixed;
        top: 0; left: 0;
        width: 100%; height: 100%;
        background-color: rgba(0, 0, 0, 0.85);
        z-index: 1000;
        justify-content: center;
        align-items: center;
    }
    .photo-viewer-modal.visible { display: flex; }
    .viewer-image { max-width: 90%; max-height: 90%; object-fit: contain; }
    .close-viewer-btn { position: absolute; top: 20px; right: 30px; font-size: 3rem; color: #fff; cursor: pointer; }
    .viewer-like-btn {
        position: absolute;
        top: 20px;
        right: 90px;
        font-size: 2rem;
        color: #fff;
        cursor: pointer;
        user-select: none;
    }
}
