/* 기본 스타일 */
* {
    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-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 헤더 */
.header {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    position: relative;
}

.back-button-container {
    margin-bottom: 15px;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    background: #f8f9fa;
    color: #666;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.back-btn:hover {
    background: #e9ecef;
    color: #333;
    transform: translateX(-2px);
}

.project-title {
    font-size: 28px;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 12px;
}

.project-title i {
    color: #3498db;
}

/* 섹션 공통 스타일 */
section {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 25px;
}

section h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 22px;
}

/* 프로젝트 정보 */
.info-card {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.info-card h2 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.info-card p {
    color: #666;
    margin-bottom: 20px;
    font-size: 16px;
}

.tech-stack h3 {
    color: #2c3e50;
    margin-bottom: 12px;
    font-size: 18px;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-tag {
    background: #3498db;
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

/* 기능 목록 */
.feature-list {
    display: grid;
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.feature-item i {
    font-size: 24px;
    color: #3498db;
    margin-top: 2px;
}

.feature-content h3 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 16px;
}

.feature-content p {
    color: #666;
    font-size: 14px;
}

/* 액션 버튼 */
.action-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

/* 상태 정보 */
.status-card {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #e9ecef;
}

.status-item:last-child {
    border-bottom: none;
}

.status-label {
    font-weight: 500;
    color: #666;
}

.status-value {
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
}

.status-value.in-progress {
    background: #fff3cd;
    color: #856404;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .project-title {
        font-size: 24px;
    }
    
    section {
        padding: 20px;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
    }
    
    .status-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .action-buttons {
        justify-content: center;
    }
}