/* S-CORE 공통 스타일 - 베이스, 레이아웃, 로딩, 에러, 모바일 반응형 */

/* ===== 베이스 스타일 (모든 페이지 공통) ===== */
body {
    background: #f5f7fa;
    font-family: 'Pretendard', -apple-system, sans-serif;
}

/* Admin 전용 요소 숨김 (기본) */
.admin-only {
    display: none !important;
}

/* Admin 로그인 시 표시 */
.is-admin-root .admin-only {
    display: inline-block !important;
}

/* 네비게이션 메뉴의 admin-only는 inline-block */
.nav-menu .admin-only {
    display: none !important;
}

.is-admin-root .nav-menu .admin-only {
    display: inline-block !important;
}

.container-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
}

.header {
    background: linear-gradient(135deg, #1a365d 0%, #2c5282 50%, #2b6cb0 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    margin-bottom: 1.5rem;
}

.card-header {
    background: #2c5282;
    color: white;
    font-weight: 600;
    border-radius: 12px 12px 0 0 !important;
    padding: 1rem 1.5rem;
}

.nav-menu {
    background: white;
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.nav-menu a {
    color: #2c5282;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    margin-right: 0.5rem;
    transition: all 0.2s;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: #2c5282;
    color: white;
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.stat-card .value {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c5282;
}

.stat-card .label {
    font-size: 0.9rem;
    color: #718096;
    margin-top: 0.5rem;
}

.btn-outline-light:hover {
    background: rgba(255,255,255,0.15);
}

/* ===== 로딩 스피너 ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid #e2e8f0;
    border-top-color: #2c5282;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-text {
    margin-top: 1rem;
    color: #2c5282;
    font-weight: 500;
    font-size: 0.95rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 인라인 로딩 (테이블 내부 등) */
.loading-inline {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: #718096;
}

.loading-inline .spinner-sm {
    width: 20px;
    height: 20px;
    border: 2px solid #e2e8f0;
    border-top-color: #2c5282;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 0.5rem;
}

/* ===== 에러 메시지 ===== */
.error-container {
    padding: 1.5rem;
    text-align: center;
}

.error-icon {
    font-size: 3rem;
    color: #ef4444;
    margin-bottom: 1rem;
}

.error-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 0.5rem;
}

.error-message {
    color: #718096;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.error-retry-btn {
    padding: 0.5rem 1.5rem;
}

/* 토스트 에러 스타일 개선 */
.toast.error-toast {
    background: #fef2f2 !important;
    border-left: 4px solid #ef4444;
}

.toast.error-toast .toast-body {
    color: #991b1b;
}

/* ===== 버튼 로딩 상태 ===== */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-top: -8px;
    margin-left: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-loading .btn-text {
    visibility: hidden;
}

/* ===== 모바일 반응형 ===== */

/* 768px 이하 (태블릿) */
@media (max-width: 768px) {
    .container-main {
        padding: 1rem !important;
    }
    
    .header {
        padding: 1rem !important;
        border-radius: 8px !important;
    }
    
    .header h1 {
        font-size: 1.4rem !important;
    }
    
    .header > div {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .header .text-end {
        text-align: left !important;
        width: 100%;
    }
    
    /* 네비게이션 가로 스크롤 */
    .nav-menu {
        padding: 0.75rem !important;
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-menu a {
        padding: 0.4rem 0.75rem !important;
        font-size: 0.85rem;
        display: inline-block;
    }
    
    /* 통계 카드 2열 */
    .stat-card {
        padding: 1rem !important;
    }
    
    .stat-card .value {
        font-size: 1.8rem !important;
    }
    
    .stat-card .label {
        font-size: 0.8rem !important;
    }
    
    /* 카드 */
    .card {
        border-radius: 8px !important;
        margin-bottom: 1rem !important;
    }
    
    .card-header {
        padding: 0.75rem 1rem !important;
        font-size: 0.9rem;
    }
    
    .card-body {
        padding: 1rem !important;
    }
    
    /* 테이블 반응형 */
    .table-responsive {
        margin: 0 -1rem;
        padding: 0 1rem;
    }
    
    .table th, .table td {
        padding: 0.5rem 0.4rem !important;
        font-size: 0.85rem;
    }
    
    /* 긴 텍스트 말줄임 */
    .text-truncate-mobile {
        max-width: 120px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    /* 버튼 크기 조정 */
    .btn-sm {
        padding: 0.25rem 0.5rem !important;
        font-size: 0.8rem !important;
    }
    
    /* 품질 가점 버튼 */
    .quality-btn {
        padding: 0.2rem 0.4rem !important;
        font-size: 0.7rem !important;
        margin-bottom: 0.25rem;
    }
    
    /* 페이지 배지 */
    .page-badge {
        width: 28px !important;
        height: 28px !important;
        line-height: 28px !important;
        font-size: 0.8rem !important;
    }
    
    /* 모달 */
    .modal-dialog {
        margin: 0.5rem;
    }
    
    .modal-body {
        padding: 1rem !important;
    }
    
    /* 필터 영역 */
    .filter-row .col-md-3,
    .filter-row .col-md-4 {
        margin-bottom: 0.75rem;
    }
    
    /* 숨길 컬럼 (모바일에서) */
    .hide-mobile {
        display: none !important;
    }
}

/* 576px 이하 (모바일) */
@media (max-width: 576px) {
    .container-main {
        padding: 0.75rem !important;
    }
    
    .header h1 {
        font-size: 1.2rem !important;
    }
    
    /* 통계 카드 1열 또는 2열 */
    .row.g-3 > [class*="col-md-3"] {
        flex: 0 0 50%;
        max-width: 50%;
    }
    
    .stat-card .value {
        font-size: 1.5rem !important;
    }
    
    /* 테이블 더 작게 */
    .table th, .table td {
        padding: 0.4rem 0.3rem !important;
        font-size: 0.8rem;
    }
    
    /* 네비게이션 아이콘만 표시 옵션 */
    .nav-menu a .nav-text {
        display: none;
    }
    
    .nav-menu a {
        padding: 0.5rem !important;
    }
    
    /* 품질 버튼 아이콘만 */
    .quality-btn-text {
        display: none;
    }
    
    /* 액션 버튼 영역 */
    .action-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .action-buttons .btn {
        width: 100%;
    }
}

/* ===== 스켈레톤 로딩 ===== */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-text.short {
    width: 60%;
}

.skeleton-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== 접근성 개선 ===== */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: 2px solid #2c5282;
    outline-offset: 2px;
}

/* 고대비 모드 지원 */
@media (prefers-contrast: high) {
    .stat-card {
        border: 2px solid #1a202c;
    }
    
    .btn {
        border-width: 2px;
    }
}

/* 모션 감소 선호 */
@media (prefers-reduced-motion: reduce) {
    .loading-spinner,
    .btn-loading::after,
    .skeleton {
        animation: none;
    }
    
    .loading-spinner {
        border-style: dashed;
    }
}

/* ===== 편집 셀 시각적 피드백 (v2.7) ===== */
.ed-cell.saving {
    background-color: #dbeafe !important;
    box-shadow: inset 0 0 0 2px #3b82f6;
    transition: all 0.3s ease;
}

.ed-cell.saved {
    animation: savedFlash 1.2s ease forwards;
}

@keyframes savedFlash {
    0% { background-color: #d1fae5; box-shadow: inset 0 0 0 2px #10b981; }
    70% { background-color: #d1fae5; }
    100% { background-color: #fefce8; box-shadow: none; }
}

/* ===== 등급 배지 개선 (v2.7) ===== */
.grade-badge {
    position: relative;
    overflow: hidden;
    text-shadow: 0 1px 2px rgba(0,0,0,0.15);
    box-shadow: 0 2px 4px rgba(0,0,0,0.12);
    transition: transform 0.2s ease;
}

.grade-badge:hover {
    transform: scale(1.1);
}

.grade-badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.grade-badge:hover::before {
    left: 100%;
}

.grade-S  { background: linear-gradient(135deg, #fbbf24, #f59e0b); color: #92400e; border: 1px solid #d97706; }
.grade-Ap { background: linear-gradient(135deg, #ef4444, #dc2626); color: #fff; border: 1px solid #b91c1c; }
.grade-A  { background: linear-gradient(135deg, #f97316, #ea580c); color: #fff; border: 1px solid #c2410c; }
.grade-Bp { background: linear-gradient(135deg, #3b82f6, #2563eb); color: #fff; border: 1px solid #1d4ed8; }
.grade-B  { background: linear-gradient(135deg, #6b7280, #4b5563); color: #fff; border: 1px solid #374151; }

/* ===== 통계 카드 개선 (v2.7) ===== */
.stat-card {
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #2c5282, #4299e1);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

/* ===== 저장 완료 토스트 개선 (v2.7) ===== */
.toast.success-toast {
    background: #f0fdf4 !important;
    border-left: 4px solid #22c55e;
}

.toast.success-toast .toast-body {
    color: #166534;
}

/* ===== 모바일 테이블 스크롤 인디케이터 (v2.7) ===== */
.table-responsive {
    position: relative;
}

.table-responsive::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 20px;
    height: 100%;
    background: linear-gradient(270deg, rgba(0,0,0,0.06), transparent);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
}

@media (max-width: 768px) {
    .table-responsive::after {
        opacity: 1;
    }
}