:root {
    --primary-color: #A68B6A;
    /* Slightly deeper, more sophisticated gold/brown */
    --secondary-color: #1A1A1A;
    /* Deeper black */
    --accent-color: #F5EFEB;
    /* Soft off-white */
    --text-main: #222222;
    --text-sub: #777777;
    --white: #FFFFFF;
    --bg-light: #FAFAFA;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Pretendard', sans-serif;
}

body {
    background-color: var(--white);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

header {
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    width: 100%;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid #eee;
}

.logo {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 2px;
}

.nav-btn {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 0.8rem;
    border: 1px solid var(--secondary-color);
    padding: 0.4rem 0.8rem;
    transition: 0.3s;
}

.nav-btn:hover {
    background: var(--secondary-color);
    color: var(--white);
}

.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.1)), url('hero_v2.jpg');
    background-size: cover;
    background-position: top center;
    /* 상단 텍스트 보존을 위해 top으로 변경 */
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    /* 텍스트를 아래쪽으로 내려서 사진 텍스트와 겹침 방지 */
    align-items: center;
    color: var(--white);
    padding-bottom: 15vh;
    /* 하단 여백 확보 */
    padding-top: 80px;
    /* 헤더 공간 확보 */
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 400;
    letter-spacing: 5px;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1rem;
    font-weight: 300;
    letter-spacing: 2px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.section {
    padding: 5rem 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.section-label {
    display: block;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    letter-spacing: 3px;
    text-align: center;
}

.section-title {
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: 3rem;
    font-weight: 300;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

@media (min-width: 768px) {
    .video-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Masonry-like Grid for Gallery */
.masonry-grid {
    column-count: 2;
    column-gap: 20px;
}

@media (min-width: 992px) {
    .masonry-grid {
        column-count: 3;
    }
}

.masonry-item {
    display: inline-block;
    width: 100%;
    margin-bottom: 20px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.4s ease;
}

.masonry-item:hover {
    transform: translateY(-5px);
}

.masonry-item img {
    width: 100%;
    height: auto;
    display: block;
}

.video-item {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    height: 350px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

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

.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr 1fr;
    }
}

.image-box img {
    width: 100%;
    border-radius: 4px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.content-box h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.rooftop-banner {
    background: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)), url('rooftop_view.jpg');
    background-size: cover;
    background-position: center;
    height: 60vh;
    /* 조금 더 크게 보이도록 높이 조절 */
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--white);
    text-align: center;
}

.menu-section {
    background-color: #fcf9f6;
}

.footer {
    padding: 3rem 1.5rem;
    text-align: center;
    background: #f4f4f4;
    color: var(--text-sub);
    font-size: 0.8rem;
}

/* Drawing Experience Section Enhancements */
.drawing-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 4rem;
}

@media (min-width: 768px) {
    .drawing-gallery {
        grid-template-columns: repeat(4, 1fr);
    }
}

.drawing-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    height: 250px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.drawing-item.tall {
    grid-row: span 1;
}

@media (min-width: 768px) {
    .drawing-item.tall {
        grid-row: span 2;
        height: 520px;
    }
}

.drawing-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.drawing-item:hover {
    transform: translateY(-10px);
}

.drawing-item:hover img {
    transform: scale(1.1);
}

.drawing-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(194, 163, 131, 0.2);
    opacity: 0;
    transition: 0.3s;
}

.drawing-item:hover::after {
    opacity: 1;
}