/* ========================================
   MSDS 분석 시스템 - CSS 스타일시트
   Frontend-Design 스킬 기반 미니멀 디자인
   ======================================== */

:root {
    /* 기본 컬러 팔레트 */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --accent-color: #059669;
    --accent-dark: #047857;
    --neutral-50: #f9fafb;
    --neutral-100: #f3f4f6;
    --neutral-200: #e5e7eb;
    --neutral-300: #d1d5db;
    --neutral-500: #6b7280;
    --neutral-600: #4b5563;
    --neutral-700: #374151;
    --neutral-800: #1f2937;
    --neutral-900: #111827;
    --error-color: #dc2626;
    --success-color: #059669;
    --warning-color: #f59e0b;

    /* 타이포그래피 */
    --font-display: 'Poppins', sans-serif;
    --font-body: 'Noto Sans KR', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* 간격 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-base: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* 그림자 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* 테두리 */
    --border-radius-sm: 0.375rem;
    --border-radius-base: 0.5rem;
    --border-radius-md: 0.75rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.5rem;

    /* 트랜지션 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   기본 스타일
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--neutral-800);
    background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
    min-height: 100vh;
}

/* ========================================
   컨테이너 및 레이아웃
   ======================================== */

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--neutral-50);
}

.header {
    background: #f8f9fa;
    border-bottom: 1px solid var(--neutral-300);
    padding: var(--spacing-base) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    padding: 0 var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    min-width: 300px;
}

.logo-icon {
    width: 28px;
    height: 28px;
    stroke: var(--primary-color);
    flex-shrink: 0;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.logo-section h1 {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: 0;
}

.logo-section p {
    font-size: var(--font-size-xs);
    color: var(--neutral-500);
    margin: 0;
}

.nav-tabs {
    display: flex;
    gap: var(--spacing-base);
    flex-wrap: wrap;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--neutral-500);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-family: var(--font-body);
    font-weight: 500;
    cursor: pointer;
    border-radius: 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-base);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
}

.tab-btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

.tab-btn:hover {
    background: transparent;
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-btn.active {
    background: transparent;
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.main-content {
    padding: var(--spacing-lg) var(--spacing-xl) calc(var(--spacing-2xl) + 56px);
    flex: 1;
    width: 100%;
}

.tab-content {
    display: none;
    animation: fadeIn var(--transition-fast);
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   섹션 헤더
   ======================================== */

.section-header {
    margin-bottom: var(--spacing-base);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--neutral-200);
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--spacing-xs);
}

.section-header p {
    font-size: var(--font-size-sm);
    color: var(--neutral-500);
}

/* ========================================
   업로드 영역
   ======================================== */

.upload-section {
    margin-bottom: var(--spacing-lg);
}

.upload-area {
    border: 2px dashed var(--primary-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl) var(--spacing-xl);
    text-align: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(59, 130, 246, 0.02) 100%);
    transition: all var(--transition-base);
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.05) 100%);
}

.upload-area.drag-over {
    border-color: var(--accent-color);
    background: linear-gradient(135deg, rgba(5, 150, 105, 0.1) 0%, rgba(5, 150, 105, 0.05) 100%);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-base);
}

.upload-area h3 {
    font-size: var(--font-size-xl);
    color: var(--neutral-900);
    margin-bottom: var(--spacing-base);
}

.upload-area p {
    color: var(--neutral-500);
    margin-bottom: var(--spacing-lg);
}

.uploaded-files {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.uploaded-files h3 {
    font-size: var(--font-size-lg);
    color: var(--neutral-900);
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   분석 제목 입력 영역
   ======================================== */

.analysis-title-section {
    /* margin-bottom: var(--spacing-xl); */
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--neutral-200);
}

.form-label {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: var(--spacing-sm);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-base);
    font-size: var(--font-size-base);
    border: 1px solid var(--neutral-300);
    border-radius: var(--border-radius-base);
    font-family: var(--font-body);
    transition: all var(--transition-fast);
    color: var(--neutral-900);
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--neutral-300);
}

.form-input::placeholder {
    color: var(--neutral-500);
}

.form-help {
    font-size: var(--font-size-sm);
    color: var(--neutral-500);
    margin-top: var(--spacing-xs);
}

/* ========================================
   컴팩트 업로드 영역 (2-컬럼 레이아웃)
   ======================================== */

.upload-section-compact {
    /* margin-bottom: var(--spacing-xl); */
}

.upload-area-compact {
    border: 2px dashed var(--primary-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg) var(--spacing-base);
    text-align: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(59, 130, 246, 0.02) 100%);
    transition: all var(--transition-base);
    cursor: pointer;
}

.upload-area-compact:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.05) 100%);
}

.upload-area-compact.drag-over {
    border-color: var(--accent-color);
    background: linear-gradient(135deg, rgba(5, 150, 105, 0.1) 0%, rgba(5, 150, 105, 0.05) 100%);
}

.upload-icon-small {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-sm);
    stroke: var(--primary-color);
    opacity: 0.7;
}

.upload-area-compact h4 {
    font-size: var(--font-size-base);
    color: var(--neutral-900);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.upload-area-compact p {
    color: var(--neutral-500);
    margin-bottom: var(--spacing-base);
    font-size: var(--font-size-sm);
}

.uploaded-files-compact {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.uploaded-files-compact h4 {
    font-size: var(--font-size-base);
    color: var(--neutral-900);
    margin-bottom: var(--spacing-base);
    font-weight: 600;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.file-buttons {
    display: flex;
    gap: var(--spacing-base);
    flex-wrap: wrap;
}

#fileListContainer {
    display: grid;
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-lg);
    max-height: 300px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-base);
    background: var(--neutral-50);
    border-radius: var(--border-radius-base);
    border-left: 4px solid var(--primary-color);
}

.file-item-name {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--neutral-800);
}

.file-item-remove {
    background: transparent;
    border: none;
    color: var(--error-color);
    cursor: pointer;
    font-size: var(--font-size-lg);
    padding: var(--spacing-xs) var(--spacing-base);
}

.file-item-remove:hover {
    color: var(--primary-color);
}

/* ========================================
   진행 상황
   ======================================== */

.progress-section {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.progress-info p {
    color: var(--neutral-600);
    margin-bottom: var(--spacing-base);
}

.progress-bar {
    height: 8px;
    background: var(--neutral-200);
    border-radius: var(--border-radius-base);
    overflow: hidden;
    margin-bottom: var(--spacing-base);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-light), var(--accent-color));
    border-radius: var(--border-radius-base);
    transition: width var(--transition-slow);
    width: 0%;
}

#progressPercent {
    text-align: center;
    color: var(--primary-color);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

/* ========================================
   결과 표시
   ======================================== */

.results-section {
    animation: fadeIn var(--transition-base);
}

/* 2-컬럼 레이아웃 */
.results-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.results-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.results-right {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.results-right > .results-table {
    display: flex;
    flex-direction: column;
}

.results-right > .results-table > table {
    flex: 0;
}

/* 기본 요약 (전체 폭) */
.results-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.summary-card {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.summary-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.summary-value {
    font-family: var(--font-display);
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-base);
}

.summary-label {
    font-size: var(--font-size-sm);
    color: var(--neutral-500);
    font-weight: 500;
}

/* 컴팩트 요약 (왼쪽 컬럼) */
.results-summary-compact {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.summary-card-compact {
    display: none;
}

.summary-value-compact {
    display: none;
}

.summary-label-compact {
    display: none;
}

.summary-stat-row {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    align-items: center;
}

.summary-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--neutral-500);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.stat-value.success {
    color: #10b981;
}

.stat-value.failed {
    color: #ef4444;
}

.summary-stat-inline {
    display: inline-block;
    margin-right: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--neutral-700);
    font-weight: 500;
}

.stat-success {
    color: #10b981;
    font-weight: 700;
}

.stat-failed {
    color: #ef4444;
    font-weight: 700;
}

.results-table {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    max-height: 500px;
}

.results-table h3 {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--neutral-200);
    margin: 0;
    font-size: var(--font-size-lg);
    color: var(--neutral-900);
    background: white;
}

table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.results-table table {
    overflow-y: auto;
    background: white;
}

thead {
    background: #f3f4f6;
    border-bottom: 2px solid var(--neutral-300);
}

th {
    padding: var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    color: var(--neutral-900);
    font-size: var(--font-size-sm);
    background: #f3f4f6;
}

th:nth-child(1) {
    width: 35%;
}

th:nth-child(2) {
    width: 15%;
}

th:nth-child(3) {
    width: 15%;
}

th:nth-child(4) {
    width: 15%;
}

th:nth-child(5) {
    width: 20%;
}

#resultsTableBody {
    min-height: 80px;
    max-height: 350px;
    overflow-y: auto;
    display: block;
}

tbody tr {
    display: table;
    width: 100%;
    table-layout: fixed;
    border-bottom: 1px solid var(--neutral-100);
    transition: background-color var(--transition-fast);
}

tbody tr:hover {
    background-color: #f9fafb;
}

td {
    padding: var(--spacing-lg);
    color: var(--neutral-900);
    font-size: var(--font-size-sm);
    background: white;
}

td:nth-child(1) {
    width: 35%;
}

td:nth-child(2) {
    width: 15%;
}

td:nth-child(3) {
    width: 15%;
}

td:nth-child(4) {
    width: 15%;
}

td:nth-child(5) {
    width: 20%;
}

.status-success {
    color: var(--success-color);
    font-weight: 600;
}

.status-failed {
    color: var(--error-color);
    font-weight: 600;
}

.action-btn {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--border-radius-base);
    cursor: pointer;
    font-size: var(--font-size-xs);
    font-weight: 500;
    transition: all var(--transition-base);
}

.action-btn:hover {
    background: var(--primary-color);
    color: white;
}

.action-btn-small {
    background: transparent;
    border: 1px solid;  var(--primary-color);
    /* color: var(--primary-color); */
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-base);
    cursor: pointer;
    font-size: var(--font-size-xs);
    font-weight: 500;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.action-btn-small:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

/* ========================================
   분석 기록 보기 섹션
   ======================================== */

.view-more-section {
    display: flex;
    justify-content: center;
    gap: var(--spacing-base);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--neutral-200);
    margin-top: var(--spacing-lg);
}

.btn-secondary {
    background: var(--neutral-100);
    border: 1px solid var(--neutral-300);
    color: var(--neutral-800);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-base);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-secondary:hover {
    background: var(--neutral-200);
    border-color: var(--neutral-400);
}

/* ========================================
   다운로드 섹션
   ======================================== */

.download-section {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.download-section h3 {
    font-size: var(--font-size-lg);
    color: var(--neutral-900);
    margin-bottom: var(--spacing-lg);
}

.download-buttons {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

/* 맨 하단 다운로드 섹션 */
.download-section-bottom {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    grid-column: 1 / -1;
}

.download-section-bottom h3 {
    font-size: var(--font-size-lg);
    color: var(--neutral-900);
    margin-bottom: var(--spacing-lg);
}

/* 오른쪽 컬럼 다운로드 섹션 */
.download-section-right {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.download-section-right h3 {
    font-size: var(--font-size-base);
    color: var(--neutral-900);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

/* ========================================
   검색 섹션
   ======================================== */

.search-section {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-base);
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 250px;
    padding: var(--spacing-base) var(--spacing-lg);
    border: 1px solid var(--neutral-300);
    border-radius: var(--border-radius-base);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    background: white;
    color: #000000 !important;
}

.search-input::placeholder {
    color: var(--neutral-400);
    opacity: 0.7;
}

.search-input:focus {
    outline: none;
    border-color: var(--neutral-300);
}

.info-box {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(5, 150, 105, 0.05) 100%);
    border-left: 4px solid var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--border-radius-base);
    margin-bottom: var(--spacing-base);
    color: var(--neutral-900);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.history-table {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    overflow-x: auto;
    box-shadow: var(--shadow-sm);
}

.history-table table {
    min-width: 100%;
}

/* ========================================
   분석 기록 마스터-디테일 뷰
   ======================================== */

.analysis-history-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.analysis-group {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.analysis-group:hover {
    box-shadow: var(--shadow-md);
}

.analysis-group-header {
    background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
    padding: var(--spacing-lg);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
    border-bottom: 1px solid var(--neutral-200);
}

.analysis-group-header:hover {
    background: linear-gradient(135deg, #e5e7eb 0%, #d1d5db 100%);
}

.analysis-group-header.expanded {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    border-bottom-color: var(--primary-color);
}

.analysis-group-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--neutral-900);
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
}

.analysis-group-title-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 700;
}

.analysis-group-meta {
    display: flex;
    gap: var(--spacing-2xl);
    font-size: var(--font-size-sm);
    color: var(--neutral-600);
}

.toggle-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    transition: transform var(--transition-fast);
    color: var(--neutral-500);
}

.analysis-group-header.expanded .toggle-icon {
    transform: rotate(180deg);
}

.analysis-group-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base) ease-in-out;
}

.analysis-group-content.expanded {
    max-height: 5000px;
}

.analysis-files-list {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--neutral-200);
}

.analysis-file-item {
    padding: var(--spacing-base) var(--spacing-lg);
    background: var(--neutral-50);
    border-radius: var(--border-radius-base);
    margin-bottom: var(--spacing-base);
    border-left: 4px solid var(--primary-light);
}

.analysis-file-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
}

.analysis-file-item-name {
    font-weight: 500;
    color: var(--neutral-900);
    flex: 1;
}

.analysis-file-cas-count {
    display: inline-block;
    background: var(--primary-light);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-left: var(--spacing-base);
}

.analysis-cas-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-base);
    font-size: var(--font-size-sm);
}

.analysis-cas-table thead {
    background: var(--neutral-200);
    border-bottom: 2px solid var(--neutral-300);
}

.analysis-cas-table th {
    padding: var(--spacing-sm);
    text-align: left;
    font-weight: 600;
    color: var(--neutral-900);
}

.analysis-cas-table td {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--neutral-200);
}

.analysis-cas-table tbody tr:hover {
    background: var(--neutral-100);
}

/* ========================================
   3단 레이아웃: 분석 세션 | 파일 목록 | CAS 세부정보
   ======================================== */

.history-layout-3col {
    display: grid;
    grid-template-columns: 300px 1fr 1fr;
    gap: var(--spacing-lg);
    height: 70vh;
    margin-top: var(--spacing-lg);
}

.history-panel {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
    border-bottom: 1px solid var(--neutral-200);
    flex-shrink: 0;
}

.panel-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--neutral-900);
}

/* 좌측 패널: 분석 세션 목록 */
.history-panel-sessions {
    grid-column: 1;
}

.sessions-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-base);
}

.session-item {
    padding: var(--spacing-base) var(--spacing-lg);
    margin-bottom: var(--spacing-base);
    background: var(--neutral-50);
    border: 2px solid transparent;
    border-radius: var(--border-radius-base);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-left: 4px solid var(--primary-light);
}

.session-item:hover {
    background: var(--neutral-100);
    border-color: var(--primary-light);
}

.session-item.active {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    border-color: var(--primary-color);
    border-left-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.session-item-title {
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.session-item-meta {
    font-size: var(--font-size-xs);
    color: var(--neutral-600);
    display: flex;
    justify-content: space-between;
}

/* 중앙 패널: 파일 목록 */
.history-panel-files {
    grid-column: 2;
}

.files-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-base);
}

.file-item {
    padding: var(--spacing-base) var(--spacing-lg);
    margin-bottom: var(--spacing-base);
    background: var(--neutral-50);
    border: 2px solid transparent;
    border-radius: var(--border-radius-base);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-left: 4px solid #10b981;
}

.file-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-base);
}

.file-item-info {
    flex: 1;
}

.file-item:hover {
    background: var(--neutral-100);
    border-color: #10b981;
}

.file-item.active {
    background: #d1fae5;
    border-color: #10b981;
    border-left-color: #10b981;
    box-shadow: var(--shadow-md);
}

.file-item-name {
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    word-break: break-word;
}

.file-item-count {
    font-size: var(--font-size-xs);
    color: var(--neutral-600);
}

/* 우측 패널: CAS 세부정보 */
.history-panel-details {
    grid-column: 3;
}

.cas-details {
    flex: 1;
    padding: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: white;
}

.cas-table-container {
    width: 100%;
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    background: white;
}

.cas-table-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--neutral-900);
    padding: var(--spacing-lg) var(--spacing-base);
    border-bottom: 2px solid var(--primary-light);
    background: white;
    margin-bottom: 0;
}

body.dark-mode .cas-details {
    background: #1a202c;
}

body.dark-mode .cas-table-container {
    background: #1a202c;
}

body.dark-mode .cas-table-title {
    color: white;
    background: #2d3748;
    border-bottom-color: var(--primary-color);
}

.cas-detail-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

.cas-detail-table thead {
    background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
    position: sticky;
    top: 0;
    z-index: 10;
    opacity: 1;
}

body.dark-mode .cas-detail-table thead {
    background: linear-gradient(135deg, #2d3748 0%, #252d3d 100%);
    opacity: 1;
}

.cas-detail-table th {
    padding: var(--spacing-sm) var(--spacing-base);
    text-align: left;
    font-weight: 600;
    color: var(--neutral-900);
    border-bottom: 2px solid var(--neutral-300);
    background: #f3f4f6;
}

body.dark-mode .cas-detail-table th {
    color: white;
    border-bottom-color: #3d4659;
}

.cas-detail-table td {
    padding: var(--spacing-sm) var(--spacing-base);
    border-bottom: 1px solid var(--neutral-200);
    color: var(--neutral-900);
    background: white;
    font-size: var(--font-size-sm);
}

body.dark-mode .cas-detail-table td {
    border-bottom-color: #3d4659;
    color: #cbd5e0;
}

.cas-detail-table tbody tr:hover {
    background: var(--neutral-50);
}

body.dark-mode .cas-detail-table tbody tr:hover {
    background: #2d3748;
}

.cas-number {
    font-weight: 600;
    color: var(--primary-color);
    font-family: 'Courier New', monospace;
}

/* 빈 상태 메시지 */
.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--neutral-500);
    text-align: center;
    padding: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

/* 반응형: 작은 화면에서는 스택 레이아웃 */
@media (max-width: 1400px) {
    .history-layout-3col {
        grid-template-columns: 1fr;
        height: auto;
        max-height: none;
    }

    .history-panel-sessions {
        grid-column: 1;
    }

    .history-panel-files {
        grid-column: 1;
    }

    .history-panel-details {
        grid-column: 1;
    }
}

/* ========================================
   안내 섹션
   ======================================== */

.guide-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.guide-card {
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.guide-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.guide-card h3 {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-base);
    font-weight: 600;
}

.guide-card p {
    color: var(--neutral-600);
    margin-bottom: var(--spacing-base);
    font-size: var(--font-size-sm);
}

.guide-card ul {
    list-style: none;
    padding-left: 0;
}

.guide-card li {
    color: var(--neutral-600);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-lg);
    position: relative;
    font-size: var(--font-size-sm);
}

.guide-card li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 600;
}

/* ========================================
   버튼 스타일
   ======================================== */

.btn {
    padding: var(--spacing-base) var(--spacing-xl);
    border: none;
    outline: none;
    border-radius: var(--border-radius-md);
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    letter-spacing: 0.5px;
}

.btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.15);
}

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(37, 99, 235, 0.15);
}

.btn-success {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 2px 8px rgba(5, 150, 105, 0.15);
}

.btn-success:hover {
    background: var(--accent-dark);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
    transform: translateY(-1px);
}

.btn-success:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(5, 150, 105, 0.15);
}

.btn-download {
    background: #10b981;
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.15);
}

.btn-download:hover {
    background: #059669;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
    transform: translateY(-1px);
}

/* 분석 세션 다운로드 버튼 */
.session-download-buttons {
    display: flex !important;
    flex-wrap: wrap;
}

body.dark-mode .session-download-buttons {
    border-bottom-color: var(--neutral-700) !important;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ========================================
   모달
   ======================================== */

.modal {
    display: none;
    position: fixed;
    z-index: 200;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn var(--transition-base);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-wrapper {
    position: relative;
    background-color: white;
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    color: var(--neutral-900);
}

.modal-content {
    padding: var(--spacing-2xl);
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    color: var(--neutral-900);
    /* ⭐ 모달 열릴 때 항상 맨 위에서 시작 */
    scroll-behavior: auto;
}

.modal-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-body);
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.15);
    z-index: 210;
}

.modal-close:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    transform: translateY(-1px);
}

.modal-close:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(37, 99, 235, 0.15);
}

/* ========================================
   세부 정보 테이블
   ======================================== */

.detail-section {
    margin-bottom: var(--spacing-xl);
}

.detail-section h4 {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-base);
    border-bottom: 2px solid var(--primary-light);
    padding-bottom: var(--spacing-base);
}

.component-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-lg);
}

.component-table td {
    padding: var(--spacing-base);
    border: 1px solid var(--neutral-200);
    color: var(--neutral-900);
    background: white;
}

.component-table td:first-child {
    font-weight: 600;
    background: #f0f4f8;
    width: 150px;
    color: var(--neutral-900);
}

.section-text {
    background: #f9fafb;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-base);
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
    color: var(--neutral-900);
}

/* ========================================
   상태 표시줄 (데스크톱 애플리케이션)
   ======================================== */

.status-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #f3f4f6;
    border-top: 1px solid var(--neutral-300);
    padding: 0;
    z-index: 99;
}

.status-bar-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    height: 36px;
    gap: 0;
    font-family: var(--font-body);
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 0 1 auto;
    min-width: 0;
    padding: 0 var(--spacing-lg);
    height: 100%;
}

.status-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: #9ca3af;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.status-value {
    font-size: var(--font-size-xs);
    color: #f3f4f6;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
    font-family: 'Courier New', monospace;
}

.status-divider {
    width: 1px;
    height: 16px;
    background: #4b5563;
    margin: 0 var(--spacing-xs);
    flex-shrink: 0;
}

/* ========================================
   반응형 디자인
   ======================================== */

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }

    .nav-tabs {
        width: 100%;
    }

    .main-content {
        padding: var(--spacing-lg) var(--spacing-base);
    }

    .section-header h2 {
        font-size: var(--font-size-2xl);
    }

    .upload-area {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }

    .results-summary {
        grid-template-columns: 1fr;
    }

    /* 모바일에서 2-컬럼을 1-컬럼으로 변경 */
    .results-container {
        grid-template-columns: 1fr;
    }

    .results-left,
    .results-right {
        grid-column: auto;
    }

    .download-section-bottom {
        grid-column: 1;
    }

    .download-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .search-section {
        flex-direction: column;
    }

    .search-input {
        min-width: 100%;
    }

    table {
        font-size: var(--font-size-xs);
    }

    th, td {
        padding: var(--spacing-base) var(--spacing-sm);
    }

    .guide-content {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
    }
}

/* ========================================
   애니메이션 및 특수 효과
   ======================================== */

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.btn:active {
    transform: scale(0.98);
}

/* 스크롤바 커스터마이징 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--neutral-100);
}

::-webkit-scrollbar-thumb {
    background: var(--neutral-300);
    border-radius: var(--border-radius-base);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--neutral-400);
}

/* 접근성 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   테마 토글 버튼
   ======================================== */

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.theme-toggle {
    background: transparent;
    border: none;
    color: var(--neutral-500);
    cursor: pointer;
    padding: var(--spacing-base);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--neutral-100);
    color: var(--primary-color);
}

/* ========================================
   다크모드 (사용자 선택)
   ======================================== */

body.dark-mode {
    --neutral-50: #0f172a;
    --neutral-100: #1e293b;
    --neutral-200: #334155;
    --neutral-300: #475569;
    --neutral-500: #94a3b8;
    --neutral-600: #cbd5e1;
    --neutral-800: #e2e8f0;
    --neutral-900: #f1f5f9;
    background: var(--neutral-50);
    color: var(--neutral-800);
}

body.dark-mode .header {
    background: #1a1f2e;
    border-bottom-color: #2d3748;
}

body.dark-mode .header .theme-toggle:hover {
    background: var(--neutral-200);
}

body.dark-mode .tab-btn {
    color: var(--neutral-600);
}

body.dark-mode .tab-btn:hover,
body.dark-mode .tab-btn.active {
    color: var(--primary-light);
}

body.dark-mode .main-content {
    background: var(--neutral-50);
}

body.dark-mode .section-header {
    border-bottom-color: var(--neutral-200);
}

body.dark-mode .section-header h2 {
    color: var(--neutral-900);
}

body.dark-mode .section-header p {
    color: var(--neutral-600);
}

body.dark-mode .upload-area-compact,
body.dark-mode .upload-area {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.05) 100%);
    border-color: var(--neutral-300);
}

body.dark-mode .upload-area-compact:hover,
body.dark-mode .upload-area:hover {
    border-color: var(--primary-light);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(59, 130, 246, 0.1) 100%);
}

body.dark-mode .upload-area-compact h4,
body.dark-mode .upload-area h3 {
    color: var(--neutral-900);
}

body.dark-mode .upload-area-compact p,
body.dark-mode .upload-area p {
    color: var(--neutral-600);
}

body.dark-mode .analysis-title-section {
    background: var(--neutral-100);
    border-color: var(--neutral-200);
}

body.dark-mode .form-label {
    color: var(--neutral-900);
}

body.dark-mode .form-input {
    background: var(--neutral-200);
    border-color: var(--neutral-300);
    color: var(--neutral-900);
}

body.dark-mode .form-input:focus {
    border-color: var(--neutral-400);
}

body.dark-mode .form-input::placeholder {
    color: var(--neutral-500);
}

body.dark-mode .form-help {
    color: var(--neutral-500);
}

/* ========================================
   라이트모드 테이블 스타일 명시화
   ======================================== */

body.light-mode table {
    background: white;
}

body.light-mode thead {
    background: #f3f4f6;
    display: table;
    width: 100%;
    table-layout: fixed;
}

body.light-mode th {
    background: #f3f4f6;
    color: var(--neutral-900);
    border-bottom-color: var(--neutral-300);
}

body.light-mode tbody {
    display: block;
}

body.light-mode tbody tr {
    display: table;
    width: 100%;
    table-layout: fixed;
    background: white;
    border-bottom-color: var(--neutral-200);
}

body.light-mode tbody tr:hover {
    background: #f9fafb;
}

body.light-mode td {
    background: white;
    color: var(--neutral-900);
    border-bottom-color: var(--neutral-200);
}

body.light-mode .action-btn {
    background: var(--primary-color);
    color: white;
}

body.light-mode .action-btn:hover {
    background: var(--primary-dark);
}

/* CAS 상세 테이블 라이트모드 */
body.light-mode .cas-detail-table {
    background: white;
}

body.light-mode .cas-detail-table thead {
    background: #f3f4f6;
    display: table;
    width: 100%;
    table-layout: fixed;
}

body.light-mode .cas-detail-table th {
    background: #f3f4f6;
    color: var(--neutral-900);
    border-bottom-color: var(--neutral-300);
}

body.light-mode .cas-detail-table td {
    background: white;
    color: var(--neutral-900);
    border-bottom-color: var(--neutral-200);
}

body.light-mode .cas-detail-table tbody tr:hover {
    background: #f9fafb;
}

/* 컴포넌트 테이블 (모달) 라이트모드 */
body.light-mode .component-table {
    background: white;
}

body.light-mode .component-table td {
    background: white;
    color: var(--neutral-900);
    border-color: var(--neutral-200);
}

body.light-mode .component-table td:first-child {
    background: #f0f4f8;
    color: var(--neutral-900);
}

/* 벌크 테이블 (전체보기) 라이트모드 */
body.light-mode .bulk-table-container {
    background: white;
    border-color: var(--neutral-200);
}

body.light-mode .bulk-table {
    background: white;
}

body.light-mode .bulk-table thead {
    background: #f3f4f6;
    display: block;
    width: 100%;
    overflow-y: scroll;
    overflow-x: hidden;
}

body.light-mode .bulk-table thead tr {
    display: table;
    width: 100%;
    table-layout: fixed;
}

body.light-mode .bulk-table th {
    background: #f3f4f6;
    color: var(--neutral-900);
    border-bottom-color: var(--neutral-300);
    box-sizing: border-box;
}

body.light-mode .bulk-table tbody tr {
    background: white;
    border-bottom-color: var(--neutral-200);
}

body.light-mode .bulk-table td {
    background: white;
    color: var(--neutral-900);
    border-bottom-color: var(--neutral-200);
}

body.light-mode .bulk-table tbody tr:hover {
    background: #f9fafb;
}

/* ========================================
   다크모드 테이블 스타일
   ======================================== */

body.dark-mode .uploaded-files-compact,
body.dark-mode .uploaded-files {
    background: var(--neutral-100);
    border-color: var(--neutral-200);
}

body.dark-mode .progress-section {
    background: var(--neutral-100);
    border-color: var(--neutral-200);
}

body.dark-mode .results-table {
    background: #252d3d;
    border-color: #3d4659;
}

body.dark-mode .results-table h3 {
    color: white;
    border-color: #3d4659;
    background: #252d3d;
}

body.dark-mode .results-table table {
    background: #252d3d;
}

body.dark-mode .summary-stat-inline {
    color: #9ca3af;
}

body.dark-mode .info-box {
    background: linear-gradient(135deg, rgba(45, 55, 72, 0.3) 0%, rgba(45, 55, 72, 0.2) 100%);
    border-left-color: #3b82f6;
    color: #cbd5e0;
}

body.dark-mode thead {
    background: #2d3748;
    border-bottom-color: #3d4659;
    display: table;
    width: 100%;
    table-layout: fixed;
}

body.dark-mode th {
    background: #2d3748;
    color: white;
    border-bottom-color: #3d4659;
}

body.dark-mode tbody {
    display: block;
}

body.dark-mode tbody tr {
    display: table;
    width: 100%;
    table-layout: fixed;
    background: #252d3d;
    border-color: #3d4659;
}

body.dark-mode tbody tr:hover {
    background: #2d3748;
}

body.dark-mode td {
    background: #252d3d;
    color: #cbd5e0;
    border-bottom-color: #3d4659;
}

/* CAS 상세 테이블 다크모드 */
body.dark-mode .cas-detail-table {
    background: #252d3d;
}

body.dark-mode .cas-detail-table td {
    background: #252d3d;
    color: #cbd5e0;
}

/* 컴포넌트 테이블 (모달) 다크모드 */
body.dark-mode .component-table {
    background: #252d3d;
}

body.dark-mode .component-table td {
    background: #252d3d;
    color: #cbd5e0;
    border-color: #3d4659;
}

body.dark-mode .component-table td:first-child {
    background: #2d3748;
    color: white;
}

/* 벌크 테이블 (전체보기) 다크모드 */
body.dark-mode .bulk-table-container {
    background: #252d3d;
    border-color: #3d4659;
}

body.dark-mode .bulk-table {
    background: #252d3d;
}

body.dark-mode .bulk-table td {
    background: #252d3d;
    color: #cbd5e0;
}

body.dark-mode .guide-card {
    background: var(--neutral-100);
    border-color: var(--neutral-200);
}

body.dark-mode .guide-card h3 {
    color: var(--primary-light);
}

body.dark-mode .guide-card p,
body.dark-mode .guide-card li {
    color: var(--neutral-600);
}

body.dark-mode .search-input {
    background: var(--neutral-700);
    border-color: var(--neutral-600);
    color: white !important;
}

body.dark-mode .search-input::placeholder {
    color: var(--neutral-400);
    opacity: 0.7;
}

body.dark-mode .search-input:focus {
    border-color: var(--neutral-400);
}

body.dark-mode .history-table {
    background: var(--neutral-100);
    border-color: var(--neutral-200);
}

body.dark-mode .view-more-section {
    border-top-color: var(--neutral-200);
}

body.dark-mode .btn-secondary {
    background: var(--neutral-200);
    border-color: var(--neutral-300);
    color: var(--neutral-800);
}

body.dark-mode .btn-secondary:hover {
    background: var(--neutral-300);
    border-color: var(--neutral-400);
}

body.dark-mode .analysis-group {
    background: var(--neutral-100);
    border-color: var(--neutral-200);
}

body.dark-mode .analysis-group-header {
    background: linear-gradient(135deg, var(--neutral-200) 0%, var(--neutral-300) 100%);
    border-bottom-color: var(--neutral-300);
}

body.dark-mode .analysis-group-header:hover {
    background: linear-gradient(135deg, var(--neutral-300) 0%, var(--neutral-400) 100%);
}

body.dark-mode .analysis-group-header.expanded {
    background: linear-gradient(135deg, #1e3a5f 0%, #1e40af 100%);
    border-bottom-color: var(--primary-light);
}

body.dark-mode .analysis-group-title {
    color: var(--neutral-900);
}

body.dark-mode .analysis-group-meta {
    color: var(--neutral-600);
}

body.dark-mode .analysis-file-item {
    background: var(--neutral-200);
    border-left-color: var(--primary-color);
}

body.dark-mode .analysis-file-item-name {
    color: var(--neutral-900);
}

body.dark-mode .analysis-cas-table thead {
    background: var(--neutral-300);
}

body.dark-mode .analysis-cas-table th {
    color: var(--neutral-900);
}

body.dark-mode .analysis-cas-table td {
    border-bottom-color: var(--neutral-300);
}

body.dark-mode .analysis-cas-table tbody tr:hover {
    background: var(--neutral-200);
}

body.dark-mode .modal-wrapper {
    background: var(--neutral-100);
}

body.dark-mode .modal {
    background-color: rgba(0, 0, 0, 0.7);
}

body.dark-mode .section-text {
    background: #2d3748;
    color: #cbd5e0;
}

body.dark-mode .status-bar {
    background: #0f1419;
    border-top-color: #1a1f2e;
}

body.dark-mode .component-table {
    background: #252d3d;
}

body.dark-mode .component-table td {
    border-color: #3d4659;
    background: #252d3d;
    color: #cbd5e0;
}

body.dark-mode .component-table td:first-child {
    background: #2d3748;
    color: white;
}

body.dark-mode .btn-download {
    background: #10b981;
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.15);
}

/* 다크모드: 3단 레이아웃 */
body.dark-mode .history-panel {
    background: #1a1f2e;
    border-color: var(--neutral-700);
}

body.dark-mode .panel-header {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    border-bottom-color: var(--neutral-600);
}

body.dark-mode .panel-header h3 {
    color: white;
}

body.dark-mode .session-item {
    background: #2d3748;
    border-color: transparent;
    border-left-color: var(--primary-light);
}

body.dark-mode .session-item:hover {
    background: #3d4659;
    border-color: var(--primary-light);
}

body.dark-mode .session-item.active {
    background: linear-gradient(135deg, #1e3a5f 0%, #1e40af 100%);
    border-color: var(--primary-color);
    border-left-color: var(--primary-color);
}

body.dark-mode .session-item-title {
    color: white;
}

body.dark-mode .session-item-meta {
    color: #a0aec0;
}

body.dark-mode .file-item {
    background: #2d3748;
    border-color: transparent;
    border-left-color: #10b981;
}

body.dark-mode .file-item:hover {
    background: #3d4659;
    border-color: #10b981;
}

body.dark-mode .file-item.active {
    background: linear-gradient(135deg, #064e3b 0%, #047857 100%);
    border-color: #10b981;
    border-left-color: #10b981;
}

body.dark-mode .file-item-name {
    color: white;
}

body.dark-mode .file-item-count {
    color: #a0aec0;
}


body.dark-mode .cas-number {
    color: var(--primary-light);
}

body.dark-mode .action-btn-small {
    /* border-color: var(--primary-light); */
    color: var(--primary-light);
}

body.dark-mode .action-btn-small:hover {
    background: var(--primary-light);
    color: var(--neutral-900);
    border-color: var(--primary-light);
}

body.dark-mode .empty-state {
    color: var(--neutral-600);
}

body.dark-mode .btn-download:hover {
    background: #059669;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
    transform: translateY(-1px);
}

body.dark-mode .info-box {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(5, 150, 105, 0.1) 100%);
    border-color: var(--primary-light);
}

body.dark-mode .summary-card {
    background: var(--neutral-100);
    border-color: var(--neutral-200);
}

body.dark-mode .summary-value {
    color: var(--primary-light);
}

body.dark-mode .summary-label {
    color: var(--neutral-600);
}

body.dark-mode .download-section-bottom {
    background: var(--neutral-100);
    border-color: var(--neutral-200);
}

body.dark-mode .download-section-bottom h3 {
    color: var(--neutral-900);
}

body.dark-mode .download-section-right {
    background: var(--neutral-100);
    border-color: var(--neutral-200);
}

body.dark-mode .download-section-right h3 {
    color: var(--neutral-900);
}

body.dark-mode .file-item {
    background: var(--neutral-200);
    border-color: var(--neutral-300);
}

body.dark-mode .file-item-name {
    color: var(--neutral-800);
}

body.dark-mode td {
    color: #cbd5e0;
    background: #252d3d;
}

body.dark-mode .upload-area-compact h4,
body.dark-mode .upload-area h3 {
    color: var(--neutral-900);
}

body.dark-mode .progress-info p {
    color: var(--neutral-800);
}

body.dark-mode .progress-bar {
    background: var(--neutral-300);
}

body.dark-mode #progressPercent {
    color: var(--primary-light);
}

body.dark-mode ::-webkit-scrollbar-track {
    background: var(--neutral-100);
}

body.dark-mode ::-webkit-scrollbar-thumb {
    background: var(--neutral-300);
}

body.dark-mode ::-webkit-scrollbar-thumb:hover {
    background: var(--neutral-400);
}

/* 라이트모드 명시적 지정 */
body.light-mode {
    --neutral-50: #f9fafb;
    --neutral-100: #f3f4f6;
    --neutral-200: #e5e7eb;
    --neutral-300: #d1d5db;
    --neutral-500: #6b7280;
    --neutral-600: #4b5563;
    --neutral-800: #1f2937;
    --neutral-900: #111827;
}

/* ========== 보기 모드 탭 (View Mode Tabs) ========== */
.view-mode-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--neutral-200);
    padding-bottom: var(--spacing-md);
}

.view-mode-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: none;
    border: 2px solid var(--neutral-300);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--neutral-600);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all 0.3s ease;
    margin: 0 var(--spacing-xs);
}

.view-mode-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.15);
    transform: translateY(-2px);
}

.view-mode-btn.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, #3b82f6 100%);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

body.dark-mode .view-mode-tabs {
    border-bottom-color: var(--neutral-700);
}

body.dark-mode .view-mode-btn {
    color: var(--neutral-400);
    border-color: var(--neutral-600);
}

body.dark-mode .view-mode-btn:hover {
    border-color: var(--primary-light);
    color: var(--primary-light);
    box-shadow: 0 2px 8px rgba(96, 165, 250, 0.25);
}

body.dark-mode .view-mode-btn.active {
    background: linear-gradient(135deg, var(--primary-light) 0%, #60a5fa 100%);
    color: white;
    border-color: var(--primary-light);
    box-shadow: 0 4px 12px rgba(96, 165, 250, 0.4);
}

/* ========== 보기 섹션 (View Sections) ========== */
.view-section {
    display: none;
    animation: fadeIn 0.3s ease;
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
}

.view-section.active {
    display: block;
}

body.dark-mode .view-section {
    background: #1a1f2e;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== 고급 검색 필터 (Bulk Filters) ========== */
.bulk-filters {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: calc(var(--spacing-lg) / 2) calc(var(--spacing-xl) / 2);
    padding: calc(var(--spacing-lg) / 2) calc(var(--spacing-xl) / 2);
    background: var(--neutral-50);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.filter-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--neutral-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-input {
    padding: var(--spacing-md) var(--spacing-md);
    border: 1px solid var(--neutral-300);
    border-radius: calc(var(--border-radius) * 0.5);
    font-size: 15px;
    font-family: inherit;
    color: var(--neutral-800);
    background: white;
    transition: all 0.2s ease;
    height: 42px;
}

.filter-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

body.dark-mode .bulk-filters {
    background: #1a1f2e;
}

body.dark-mode .filter-group label {
    color: #cbd5e0;
}

body.dark-mode .filter-input {
    background: #2d3748;
    border-color: #3d4659;
    color: white;
}

body.dark-mode .filter-input::placeholder {
    color: #a0aec0;
    opacity: 0.8;
}

body.dark-mode .filter-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* 필터 버튼 스타일 */
.btn-filter {
    padding: 8px 16px !important;
    font-size: 13px !important;
    height: 42px;
    white-space: nowrap;
}

.btn-filter svg {
    width: 14px !important;
    height: 14px !important;
}

/* 테이블 상세정보 보기 버튼 */
.btn-detail-view {
    padding: 4px 8px !important;
    font-size: 12px !important;
    height: auto !important;
}

.btn-detail-view svg {
    width: 12px !important;
    height: 12px !important;
}

/* ========== 테이블 도구모음 (Bulk Table Toolbar) ========== */
.bulk-table-toolbar {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md) 0;
}

.btn-export {
    padding: var(--spacing-sm) var(--spacing-md) !important;
    font-size: 13px !important;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ========== 테이블 (Bulk Table) ========== */
.bulk-table-container {
    overflow-x: auto;
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    background: white;
}

.bulk-table {
    border-collapse: collapse;
    font-size: 14px;
    table-layout: fixed;
    width: 100%;
}

.bulk-table thead {
    background: white;
    display: block;
    width: 100%;
    overflow-y: auto;
    overflow-x: hidden;
}

.bulk-table tbody {
    display: block;
    overflow-y: auto;
    max-height: 600px;
    width: 100%;
}

.bulk-table thead tr {
    display: table;
    width: 100%;
    table-layout: fixed;
}

.bulk-table th {
    padding: var(--spacing-md);
    text-align: center;
    font-weight: 600;
    color: var(--neutral-900);
    border-bottom: 2px solid var(--neutral-300);
    user-select: none;
    cursor: pointer;
    transition: background 0.2s ease;
    position: relative;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    background: #f3f4f6;
    box-sizing: border-box;
}

.bulk-table th span {
    display: inline-block;
}

/* 헤더 열(th)의 세로줄 제거 */
.bulk-table th:first-child {
    border-right: none;
}

/* 컬럼 리사이저 핸들 (비활성화) */
.col-resize {
    display: none;
}

.bulk-table th:hover {
    background: #e5e7eb;
    cursor: pointer;
}

.bulk-table tr {
    display: table;
    width: 100%;
    table-layout: fixed;
}

.bulk-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--neutral-200);
    border-right: 1px solid #d1d5db;
    color: var(--neutral-900);
    background: white;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.bulk-table tbody tr {
    background: white;
}

.bulk-table tbody tr:hover {
    background: #f9fafb;
}

.bulk-table .sort-indicator {
    margin-left: var(--spacing-xs);
    opacity: 0.5;
    font-size: 12px;
}

body.dark-mode .bulk-table-container {
    background: #252d3d;
    border-color: #3d4659;
}

body.dark-mode .bulk-table thead {
    background: #2d3748;
    display: block;
    width: 100%;
    overflow-y: scroll;
    overflow-x: hidden;
}

body.dark-mode .bulk-table thead tr {
    display: table;
    width: 100%;
    table-layout: fixed;
}

body.dark-mode .bulk-table th {
    color: white;
    border-bottom-color: #3d4659;
    background: #2d3748;
    box-sizing: border-box;
}

body.dark-mode .bulk-table th:hover {
    background: #3d4659;
}

body.dark-mode .bulk-table td {
    border-bottom-color: #3d4659;
    color: #cbd5e0;
}

body.dark-mode .bulk-table tbody tr:hover {
    background: #2d3748;
}

/* ========== 페이지네이션 (Pagination) ========== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    flex-wrap: wrap;
    min-height: 60px;
    /* ⭐ 고정 높이로 레이아웃 흔들림 방지 */
}

.pagination button {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--neutral-300);
    border-radius: calc(var(--border-radius) * 0.5);
    background: white;
    color: var(--neutral-700);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s ease;
    min-width: 40px;
}

.pagination button:hover {
    border-color: var(--primary-color);
    color: white;
    background: var(--primary-color);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

body.dark-mode .pagination button {
    background: #2d3748;
    color: #cbd5e0;
    border-color: #3d4659;
}

body.dark-mode .pagination button:hover {
    border-color: var(--primary-color);
    color: white;
    background: var(--primary-color);
}

body.dark-mode .pagination button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* ========== 업로드 내역 탭 (Upload List) ========== */

.upload-list-filters {
    background: linear-gradient(135deg, var(--neutral-50) 0%, #f5f7fa 100%);
    border: 1px solid var(--neutral-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.filter-group.filter-buttons {
    flex-direction: row;
    justify-content: flex-start;
    gap: var(--spacing-base);
}

.filter-group.filter-buttons .btn {
    flex: 1;
    min-width: 0;
}

.filter-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--neutral-700);
    letter-spacing: 0.3px;
}

.filter-input,
.filter-group input[type="date"],
.filter-group input[type="text"] {
    padding: var(--spacing-sm) var(--spacing-base);
    border: 1.5px solid var(--neutral-300);
    border-radius: var(--border-radius-base);
    font-size: var(--font-size-sm);
    font-family: var(--font-body);
    transition: all var(--transition-base);
    background: white;
    color: var(--neutral-800);
}

.filter-input:hover,
.filter-group input[type="date"]:hover,
.filter-group input[type="text"]:hover {
    border-color: var(--primary-color);
    background: white;
}

.filter-input:focus,
.filter-group input[type="date"]:focus,
.filter-group input[type="text"]:focus {
    outline: none;
    border-color: var(--neutral-300);
    background: white;
}

.btn-danger {
    background: var(--error-color);
    color: white;
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.15);
    font-weight: 600;
}

.btn-danger:hover {
    background: #b91c1c;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
    transform: translateY(-1px);
}

.btn-danger:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(220, 38, 38, 0.15);
}

/* 다크모드: 필터 섹션 */
body.dark-mode .upload-list-filters {
    background: #1a1f2e;
    border-color: #3d4659;
}

body.dark-mode .filter-group label {
    color: #cbd5e0;
}

body.dark-mode .filter-input,
body.dark-mode .filter-group input[type="date"],
body.dark-mode .filter-group input[type="text"] {
    background: #2d3748;
    border-color: #3d4659;
    color: #cbd5e0;
}

body.dark-mode .filter-input:focus,
body.dark-mode .filter-group input[type="date"]:focus,
body.dark-mode .filter-group input[type="text"]:focus {
    border-color: var(--neutral-400);
    background: #2d3748;
}

body.dark-mode .filter-input::placeholder,
body.dark-mode .filter-group input[type="date"]::placeholder,
body.dark-mode .filter-group input[type="text"]::placeholder {
    color: #a0aec0;
}

/* 다크모드: 버튼 */
body.dark-mode .btn {
    background: #4299e1;
    color: white;
    border: none;
}

body.dark-mode .btn:hover {
    background: #3182ce;
}

body.dark-mode .btn-danger {
    background: #ef4444;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    font-weight: 600;
}

body.dark-mode .btn-danger:hover {
    background: #dc2626;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

body.dark-mode .btn-secondary {
    background: #4a5568;
    color: #cbd5e0;
}

body.dark-mode .btn-secondary:hover {
    background: #5a6977;
}

/* 삭제 확인 모달 */
#deleteConfirmModal {
    display: none;
    position: fixed;
    z-index: 200;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn var(--transition-base);
}

#deleteConfirmModal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

#deleteConfirmModal .modal-wrapper {
    position: relative;
    background-color: white;
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    color: var(--neutral-900);
}

#deleteConfirmModal .modal-content {
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-base);
}

#deleteConfirmModal h3 {
    font-size: var(--font-size-lg);
    color: var(--error-color);
    margin-bottom: var(--spacing-base);
}

#deleteConfirmMessage {
    font-size: var(--font-size-sm);
    color: var(--neutral-700);
    line-height: 1.6;
    margin: var(--spacing-base) 0;
}

#deleteConfirmModal .modal-actions {
    display: flex;
    gap: var(--spacing-base);
    justify-content: flex-end;
    margin-top: var(--spacing-base);
}

/* 다크모드: 삭제 모달 */
body.dark-mode #deleteConfirmModal .modal-wrapper {
    background-color: #2d3748;
    color: #cbd5e0;
}

body.dark-mode #deleteConfirmModal h3 {
    color: #fc8181;
}

body.dark-mode #deleteConfirmMessage {
    color: #cbd5e0;
}