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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* 사이드바 */
.sidebar {
    width: 280px;
    background: #2c3e50;
    color: white;
    padding: 0;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid #34495e;
}

.sidebar-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #ecf0f1;
}

.sidebar-nav {
    padding: 1rem 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin: 0;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: #bdc3c7;
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.sidebar-nav .nav-link:hover {
    background: #34495e;
    color: #ecf0f1;
    border-left-color: #3498db;
}

.sidebar-nav .nav-item .nav-link {
    padding-left: 3rem;
}

.sidebar-nav i {
    margin-right: 0.75rem;
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    margin-top: auto;
    padding: 1.5rem;
    border-top: 1px solid #34495e;
}

.user-info {
    margin-bottom: 1rem;
    color: #bdc3c7;
    font-size: 0.9rem;
}

/* 메인 콘텐츠 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.top-bar {
    background: white;
    padding: 1rem 2rem;
    border-bottom: 1px solid #e9ecef;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar h1 {
    font-size: 1.75rem;
    font-weight: 600;
    color: #2c3e50;
}

.top-bar-actions {
    display: flex;
    gap: 1rem;
}

.content-wrapper {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

/* 버튼 스타일 - 가독성 개선 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    border-radius: 0.375rem;
    transition: all 0.15s ease-in-out;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    color: #ffffff;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 주요 버튼 (파란색) */
.btn-primary {
    background-color: #2563eb;
    border-color: #2563eb;
}

.btn-primary:hover {
    background-color: #1d4ed8;
    border-color: #1d4ed8;
}

/* 보조 버튼 (회색) */
.btn-secondary {
    background-color: #6b7280;
    border-color: #6b7280;
}

.btn-secondary:hover {
    background-color: #4b5563;
    border-color: #4b5563;
}

/* 성공 버튼 (초록색) */
.btn-success {
    background-color: #059669;
    border-color: #059669;
}

.btn-success:hover {
    background-color: #047857;
    border-color: #047857;
}

/* 위험 버튼 (빨간색) */
.btn-danger {
    background-color: #dc2626;
    border-color: #dc2626;
}

.btn-danger:hover {
    background-color: #b91c1c;
    border-color: #b91c1c;
}

/* 경고 버튼 (주황색) */
.btn-warning {
    background-color: #d97706;
    border-color: #d97706;
}

.btn-warning:hover {
    background-color: #b45309;
    border-color: #b45309;
}

/* 정보 버튼 (하늘색) */
.btn-info {
    background-color: #0891b2;
    border-color: #0891b2;
}

.btn-info:hover {
    background-color: #0e7490;
    border-color: #0e7490;
}

/* 작은 버튼 */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

/* 큰 버튼 */
.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* 버튼 그룹 */
.btn-group {
    display: inline-flex;
    gap: 0.5rem;
}

/* 폼 스타일 */
.form {
    background: white;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    max-width: 800px;
}

.form-section {
    margin-bottom: 2rem;
}

.form-section h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e9ecef;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #2c3e50;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    transition: border-color 0.15s ease-in-out;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: #6b7280;
    font-size: 0.875rem;
}

.form-actions {
    padding-top: 1.5rem;
    border-top: 1px solid #e9ecef;
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* 알림 메시지 */
.alert {
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 0.375rem;
    border: 1px solid transparent;
}

.alert-success {
    background-color: #d1fae5;
    border-color: #a7f3d0;
    color: #065f46;
}

.alert-error {
    background-color: #fee2e2;
    border-color: #fecaca;
    color: #991b1b;
}

/* 테이블 스타일 */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
}

/* 상태 배지 */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 9999px;
    color: #ffffff;
}

.status-badge.active {
    background-color: #059669;
}

.status-badge.inactive {
    background-color: #6b7280;
}

.status-badge.published {
    background-color: #059669;
}

.status-badge.draft {
    background-color: #d97706;
}

.status-badge.pending {
    background-color: #0891b2;
}

/* 페이지 헤더 */
.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.page-header p {
    color: #6b7280;
    font-size: 1.1rem;
}

/* 체크박스 라벨 */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

/* 보안 팁 */
.security-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.tip-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 0.5rem;
    border-left: 4px solid #2563eb;
}

.tip-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.tip-item p {
    color: #6b7280;
    font-size: 0.9rem;
}

/* 백업 정보 */
.backup-info {
    margin-top: 2rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.info-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 0.5rem;
    text-align: center;
}

.info-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.info-item p {
    color: #6b7280;
    font-size: 0.9rem;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .admin-layout {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        order: 2;
    }
    
    .main-content {
        order: 1;
    }
    
    .content-wrapper {
        padding: 1rem;
    }
    
    .form {
        padding: 1.5rem;
    }
    
    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
    }
}