body {
    font-family: 'Jua', sans-serif;
    margin: 0;
    background-color: #fce4ec; /* Light pink background */
    color: #333;
}

header {
    background-color: #f8bbd0; /* Lighter pink for the header */
    color: #880e4f; /* Dark pink text */
    padding: 2rem;
    text-align: center;
    border-bottom: 2px solid #f48fb1;
}

header h1 {
    font-size: 2.5rem;
    margin: 0;
}

main {
    padding: 2rem;
    display: grid;
    grid-template-areas:
        "upload"
        "gallery"
        "canvas";
    gap: 2rem;
    max-width: 960px;
    margin: 0 auto;
}

.upload-section {
    grid-area: upload;
    text-align: center;
}

#hand-image-upload {
    display: none;
}

.upload-label {
    background-color: #ff80ab; /* Bright pink button */
    color: white;
    padding: 1rem 2rem;
    cursor: pointer;
    border-radius: 30px;
    font-size: 1.2rem;
    transition: background-color 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.upload-label:hover {
    background-color: #f48fb1; /* Lighter pink on hover */
}

.gallery-container {
    grid-area: gallery;
}

.nail-art-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1.5rem;
}

.nail-art-item {
    width: 100%;
    cursor: pointer;
    border: 3px solid transparent;
    border-radius: 10px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.nail-art-item:hover {
    transform: scale(1.05);
}

.nail-art-item.selected {
    border-color: #ad1457; /* Dark pink border for selected item */
    box-shadow: 0 0 10px rgba(173, 20, 87, 0.5);
}

.canvas-container {
    grid-area: canvas;
    position: relative;
    border: 2px dashed #f48fb1;
    padding: 1rem;
    border-radius: 10px;
    background-color: white;
    min-height: 300px; /* Ensure canvas container has some height */
    display: flex;
    flex-direction: column; /* ✨ 수정: 자식 요소들을 세로로 정렬 */
    align-items: center;
    justify-content: center;
}

/* ✨ 수정: status-message 스타일 추가 */
#status-message {
    color: #c2185b; 
    font-size: 1.2rem;
    text-align: center;
    margin: 1rem 0; /* 위아래 여백 추가 */
    min-height: 20px; /* 메시지가 없을 때도 공간을 차지하도록 함 */
}

/* ✨ 수정: loading-indicator 스타일 단순화 */
.loading-indicator {
    width: 100%; /* 너비를 100%로 설정 */
    max-width: 300px; /* 최대 너비 제한 */
    height: 10px; 
    background-color: #f8bbd0; 
    border-radius: 5px;
    overflow: hidden; 
    position: relative; /* 자식 요소의 위치 기준으로 사용 */
    margin-top: 1rem; /* 상태 메시지와의 간격 */
}

.loading-indicator::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%; /* 왼쪽 밖에서 시작 */
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, #ad1457, transparent);
    animation: loading-animation 1.5s linear infinite; /* 애니메이션 속도 조절 */
}

/* ✨ 수정: 로딩 애니메이션 변경 */
@keyframes loading-animation {
    from {
        left: -100%;
    }
    to {
        left: 100%;
    }
}

#canvas {
    max-width: 100%;
    height: auto;
    margin-top: 1rem; /* 로딩바/메시지와의 간격 */
}

h2 {
    text-align: center;
    color: #c2185b; /* Medium pink text */
    margin-top: 0;
    font-size: 1.8rem;
}