/* =================================
   디자인 시스템 (Design System)
   ================================= */
:root {
    --color-primary: #007bff;
    --color-primary-dark: #0056b3;
    --color-secondary: #6c757d;
    --color-success: #28a745;
    --color-danger: #dc3545;
    --color-warning: #ffc107;
    --color-info: #17a2b8;

    --background-color: #f8f9fa;
    --component-bg: #ffffff;
    --sidebar-bg: #ffffff;
    
    --text-color: #212529;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --border-radius: 0.5rem; /* 8px */
    
    --font-family: 'Poppins', sans-serif;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.07);
}

/* =================================
   기본 및 레이아웃 (Base & Layout)
   ================================= */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

.sidebar {
    width: 280px;
    background: var(--sidebar-bg);
    padding: 1.5rem;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* =================================
   사이드바 (Sidebar)
   ================================= */
.sidebar-header {
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}
.sidebar-header h2 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--color-primary);
}
.sidebar-header #app-version {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.filters {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex: 1;
    min-height: 0;
    margin-top: 2rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group-expand {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.filter-label {
    font-weight: 600;
    font-size: 0.9rem;
}

#process-mode-radios {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
#process-mode-radios label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

/* 날짜 프리셋 버튼 스타일 */
.date-presets {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.btn-preset {
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--component-bg);
    color: var(--text-color);
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 0.75rem;
    transition: all 0.2s;
}

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

.btn-preset.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.date-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.date-inputs input[type="date"] {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
}

.date-inputs span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* 작업자 필터 컨트롤 */
.worker-filter-controls {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.btn-control {
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--component-bg);
    color: var(--text-color);
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 0.7rem;
    transition: all 0.2s;
}

.btn-control:hover {
    background: var(--color-secondary);
    color: white;
    border-color: var(--color-secondary);
}

/* 고급 필터 */
.advanced-filters {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-option {
    display: flex;
    align-items: center;
}

.filter-option label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.8rem;
}

.filter-option input[type="checkbox"] {
    margin: 0;
}

/* 탭 헤더 날짜 표시 */
.tab-title-container {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.date-range-indicator {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: normal;
}

.tab-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.tab-header h3 {
    margin: 0;
    color: var(--text-color);
}

.tab-header-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.log-folder-display {
    background-color: var(--background-color);
    padding: 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    word-break: break-all;
}

.listbox-container {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow-y: auto; /* 컨테이너에만 스크롤바 적용 */
    flex: 1;
}
#worker-list {
    border: none;
    width: 100%;
    /* height: 100%; 제거하여 부모의 스크롤을 따르도록 함 */
}
#worker-list:focus {
    outline: none;
}

.filter-buttons {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* =================================
   메인 콘텐츠 (Main Content)
   ================================= */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.main-header h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 600;
}

/* =================================
   컴포넌트 (Components)
   ================================= */

/* --- 버튼 (Buttons) --- */
.btn {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    text-align: center;
    display: inline-block;
}
.btn-primary {
    background-color: var(--color-primary);
    color: white;
}
.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.btn-secondary {
    background-color: var(--component-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover {
    background-color: var(--background-color);
}

/* --- 입력 필드 (Inputs) --- */
input[type="date"], select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--component-bg);
}
input[type="date"]:focus, select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

/* --- 탭 (Tabs) --- */
.tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}
.tab-btn {
    padding: 0.75rem 1.25rem;
    border: none;
    background: none;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    font-weight: 500;
    color: var(--text-muted);
    transition: all 0.2s ease;
}
.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}
.tab-btn:hover {
    color: var(--color-primary);
    background-color: var(--background-color);
}

/* --- 카드 (Cards) --- */
.card {
    background-color: var(--component-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.kpi-grid .card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.kpi-grid .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.card-title {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    margin: 0 0 0.5rem 0;
}
.card-value {
    font-size: 1.75rem;
    font-weight: 600;
    margin: 0;
}
.card-value.positive { color: var(--color-success); }
.card-value.negative { color: var(--color-danger); }
.card-extra {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* --- 테이블 (Tables) --- */
.table-container {
    overflow-x: auto;
}
.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
.data-table th, .data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}
.data-table th {
    position: relative;
}

.resize-handle {
    position: absolute;
    top: 0;
    right: 0;
    width: 5px;
    cursor: col-resize;
    height: 100%;
}
.data-table tbody tr:hover {
    background-color: #f1f3f5;
}

/* --- 차트 (Charts) --- */
.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
    background-color: var(--component-bg);
    border-radius: var(--border-radius);
    padding: 1rem;
    border: 1px solid var(--border-color);
}

.chart-container h4 {
    margin: 0 0 1rem 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-color);
    text-align: center;
}

.chart-container canvas {
    border-radius: calc(var(--border-radius) - 0.25rem);
}

/* --- 로딩 오버레이 (Loading Overlay) --- */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.3s ease;
}
.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}
.loading-spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border-left-color: var(--color-primary);
    animation: spin 1s ease infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* =================================
   특정 탭 스타일 (Tab-specific Styles)
   ================================= */
.worker-detail-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 1.5rem;
    height: 100%;
}
.worker-list-pane {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
#detail-worker-list {
    list-style: none;
    padding: 0;
    margin: 0;
    overflow-y: auto;
}
#detail-worker-list li {
    padding: 0.75rem;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: background-color 0.2s;
}
#detail-worker-list li:hover {
    background-color: var(--background-color);
}
#detail-worker-list li.active {
    background-color: var(--color-primary);
    color: white;
    font-weight: 500;
}
.worker-detail-pane {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.worker-charts-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.trace-search-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    align-items: end;
}
.trace-search-form .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.trace-search-form .form-buttons {
    display: flex;
    gap: 0.5rem;
}

.comparison-charts-layout {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}
.period-radios {
    display: flex;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
    padding: 0.25rem;
}
.period-radios label {
    flex: 1;
}
.period-radios input {
    display: none;
}
.period-radios span {
    display: block;
    text-align: center;
    padding: 0.5rem;
    border-radius: calc(var(--border-radius) - 0.25rem);
    cursor: pointer;
    transition: all 0.2s;
}
.period-radios input:checked + span {
    background-color: var(--component-bg);
    color: var(--color-primary);
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}
.tab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.tab-header h3 {
    margin: 0;
}

.pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.pagination-controls button {
    padding: 0.5rem 1rem;
}

.pagination-controls span {
    font-weight: 500;
}