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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #ff0000 0%, #b10756 50% , #6e00db 100%);
    /* background: linear-gradient(135deg, #667eea 0%, #f5576c 50% , #764ba2 100%); */
    min-height: 100vh;
}
/* linear-gradient(135deg, #f093fb 0%, #f5576c 50%, #4facfe 100%); */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 0px 0;
    color: white;
}

.profile-img {
    width: 300px;
    height: 300px;
    border-radius: 20%;
    border: 5px solid rgba(255,255,255,0.3);
    margin: 0 auto;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    backdrop-filter: blur(10px);
}

h1 {
    font-size: 3em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-size: 1.3em;
    opacity: 0.9;
    margin-bottom: 10px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 5px;
}

.social-link {
    display: inline-block;
    padding: 7px 20px;
    background: rgba(255,255,255,0.2);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.3);
    transition: all 0.3s ease;
}

.social-link:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

.content {
    background: white;
    border-radius: 20px;
    padding: 40px;
    margin: 20px 0;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
}

.section {
    margin-bottom: 20px;
}

.section h2 {
    color: #667eea;
    font-size: 2em;
    margin-bottom: 5px;
    text-align: center;
}

.about-text {
    max-width: 900px;   /* 기존 800px → 1100px */
    margin: 0 auto;
    text-align: justify;
    font-size: 1.1em;
    color: #000;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.skill-card {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
}

.skill-card h3 {
    font-size: 1.3em;
    margin-bottom: 10px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.project-card {
    background: white;
    border: 1px solid #eee;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.project-card h3 {
    color: #667eea;
    margin-bottom: 10px;
}

.project-link {
    display: inline-block;
    margin-top: 15px;
    padding: 8px 16px;
    background: #667eea;
    color: white;
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.9em;
    transition: background 0.3s ease;
}

.project-link:hover {
    background: #5a67d8;
}

.paper-list {
    max-width: 900px;
    margin: 0 auto;
}

.paper-item {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    gap: 25px;
    align-items: flex-start;
}

.paper-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 10px rgba(102, 126, 234, 0.15);
    border-color: #667eea;
}

.paper-title {
    font-size: 1.4em;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 3px;
    line-height: 1.4;
}

.paper-authors {
    color: #4a5568;
    font-size: 1.05em;
    margin-bottom: 3px;
}

.paper-venue {
    color: #667eea;
    font-weight: 500;
    font-size: 1em;
    margin-bottom: 5px;
}

.paper-abstract {
    color: #718096;
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95em;
}

.paper-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.paper-tag {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8em;
    font-weight: 500;
}

.paper-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.paper-link {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    background: #f7fafc;
    color: #4a5568;
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: 500;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.paper-link:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.paper-link.primary {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.paper-link.primary:hover {
    background: #5a67d8;
}

.paper-image {
    flex-shrink: 0;
    width: 320px;                /* 원하는 크기로 조정 */
    aspect-ratio: 16 / 9;        /* 16:9 비율 유지 */
    border-radius: 12px;
    overflow: hidden;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 50%, #4facfe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.paper-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;            /* 이미지가 꽉 차게 */
    transition: transform 0.3s ease;
}

.paper-image:hover img {
    transform: scale(1.05);
}

.paper-placeholder {
    color: white;
    font-size: 3em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.paper-content {
    flex: 1;
    min-width: 0;
}

.paper-year {
    position: absolute;
    top: 15px;
    right: 20px;
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 0.8em;
    font-weight: 600;
}

@media (max-width: 768px) {
    .paper-item {
        flex-direction: column;
        text-align: center;
    }
    
    .paper-image {
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .paper-year {
        position: static;
        display: inline-block;
        margin-bottom: 15px;
    }
}

.stats-container {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: rgba(255,255,255,0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    color: white;
    min-width: 120px;
}

.stat-number {
    font-size: 2.5em;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9em;
    opacity: 0.9;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #eee;
    border-radius: 10px;
    font-size: 1em;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.submit-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 25px;
    font-size: 1.1em;
    cursor: pointer;
    transition: transform 0.3s ease;
    width: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
}

footer {
    text-align: center;
    padding: 40px 0;
    color: rgba(255,255,255,0.8);
}

@media (max-width: 768px) {
    h1 {
        font-size: 2em;
    }
    
    .social-links {
        flex-direction: column;
        align-items: center;
    }
    
    .content {
        padding: 20px;
    }
    
    .skills-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

.reviewer-services {
    max-width: 1100px;   /* 기존 850px → 1100px */
    margin: 0 auto;
}
.reviewer-title {
    font-size: 1.2em;
    font-weight: bold;
    color: #000000;
    margin-bottom: 5px;
    line-height: 1.3;
}