/* ===================================================
   Cognitive Hybrid RAG System - Styling
   Dark Glassmorphic UI matching the AI Portfolio Style
   =================================================== */

:root {
    --bg-color: #030305;
    --bg-secondary: #0a0a10;
    --sidebar-bg: #06060c;
    --text-main: #f0f0f0;
    --text-muted: #9a9ab0;
    --accent: #00f0ff;
    --accent-glow: rgba(0, 240, 255, 0.4);
    --accent-soft: rgba(0, 240, 255, 0.08);
    --secondary: #d300ff;
    --secondary-glow: rgba(211, 0, 255, 0.4);
    --secondary-soft: rgba(211, 0, 255, 0.08);
    --glass-bg: rgba(12, 12, 20, 0.65);
    --glass-border: rgba(255, 255, 255, 0.07);
    --card-bg: rgba(15, 15, 25, 0.8);
    --border-hover: rgba(0, 240, 255, 0.3);
    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow: hidden;
    height: 100vh;
}

/* ==================== LAYOUT ==================== */
.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.01);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 240, 255, 0.3);
}

/* ==================== SIDEBAR ==================== */
.sidebar {
    width: 320px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 24px;
    overflow-y: auto;
    flex-shrink: 0;
}

.sidebar-header {
    text-align: center;
    padding-bottom: 10px;
}

.sidebar-logo {
    font-size: 2.8rem;
    color: var(--accent);
    text-shadow: 0 0 15px var(--accent-glow);
    margin-bottom: 10px;
    animation: pulseLogo 3s ease-in-out infinite;
}

@keyframes pulseLogo {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 5px var(--accent-glow));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 15px var(--accent-glow));
    }
}

.sidebar h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.sidebar-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.sidebar-divider {
    border: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
    margin: 20px 0;
}

.sidebar-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.sidebar-section h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-weight: 600;
}

.sidebar-section h3 i {
    color: var(--accent);
}

/* Forms & Inputs */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group select {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    transition: var(--transition);
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus,
.form-group select:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

.input-help {
    font-size: 0.7rem;
    color: var(--text-muted);
    line-height: 1.3;
}

/* Sliders */
.slider-control {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
}

.slider-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.slider-header span:last-child {
    color: var(--accent);
    font-weight: 700;
}

.slider-control input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 5px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    transition: var(--transition);
}

.slider-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
    cursor: pointer;
    transition: var(--transition);
}

.slider-control input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Toggle Switches */
.toggle-control {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 8px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 38px;
    height: 20px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: .3s;
    border-radius: 20px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

input:checked + .slider:before {
    transform: translateX(18px);
}

.toggle-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.toggle-text span {
    font-size: 0.82rem;
    font-weight: 500;
}

.toggle-text small {
    font-size: 0.7rem;
    color: var(--text-muted);
    line-height: 1.3;
}

/* Sidebar Buttons */
.sidebar-footer {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    text-align: center;
}

.sidebar-footer p {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
}

.btn-danger {
    background: transparent;
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
    width: 100%;
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.15);
    border-color: #ef4444;
}

.btn-primary {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.05);
}

.btn-primary:hover {
    background: var(--accent);
    color: #000;
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    padding: 12px;
}

/* ==================== MAIN VIEW ==================== */
.main-view {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

/* Tabs Navigation */
.tabs-nav {
    display: flex;
    background: rgba(6, 6, 12, 0.6);
    border-bottom: 1px solid var(--glass-border);
    padding: 0 20px;
    backdrop-filter: blur(10px);
    flex-shrink: 0;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 18px 24px;
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--text-main);
}

.tab-btn.active {
    color: var(--accent);
    font-weight: 600;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--secondary));
    box-shadow: 0 0 10px var(--accent-glow);
}

/* Tabs Content Container */
.tabs-content {
    flex-grow: 1;
    overflow-y: auto;
    padding: 30px;
    position: relative;
}

.tab-panel {
    display: none;
    height: 100%;
    animation: fadeIn 0.4s ease;
}

.tab-panel.active {
    display: flex;
    flex-direction: column;
}

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

.panel-header {
    margin-bottom: 24px;
}

.panel-header h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
}

.panel-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 4px;
}

/* ==================== TAB 1: RAG QUERY CONSOLE ==================== */
.active-pills-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.source-tag {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
}

.badge-green {
    background: rgba(16, 185, 129, 0.12);
    border-color: rgba(16, 185, 129, 0.3);
    color: #6ee7b7;
}

.badge-blue {
    background: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.3);
    color: #93c5fd;
}

.badge-amber {
    background: rgba(245, 158, 11, 0.12);
    border-color: rgba(245, 158, 11, 0.3);
    color: #fcd34d;
}

.warning-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: #fcd34d;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.warning-banner i {
    font-size: 1.1rem;
}

/* Metadata Filters Panel */
.metadata-filters-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 24px;
}

.panel-subheader h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.filter-controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.multiselect-container {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    max-height: 110px;
    overflow-y: auto;
}

.checkbox-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-control input {
    cursor: pointer;
}

.checkbox-control label {
    font-size: 0.85rem;
    color: var(--text-main);
    cursor: pointer;
}

.page-range-inputs {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
}

.page-range-inputs input {
    width: 70px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 6px;
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 0.82rem;
}

/* Chat Messages */
.chat-container {
    flex-grow: 1;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-height: 300px;
    margin-bottom: 20px;
}

.chat-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100%;
    margin: auto;
    max-width: 600px;
    padding: 40px 20px;
}

.welcome-icon {
    font-size: 4rem;
    color: var(--accent);
    text-shadow: 0 0 20px var(--accent-glow);
    margin-bottom: 20px;
}

.chat-welcome h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.chat-welcome p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 30px;
}

.example-queries {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

.example-queries h4 {
    font-size: 0.85rem;
    color: var(--text-main);
    margin-bottom: 5px;
    text-align: left;
}

.example-btn {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    text-align: left;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.example-btn:hover {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateX(5px);
}

/* Chat Message Bubbles */
.message-bubble {
    display: flex;
    gap: 16px;
    max-width: 85%;
    animation: fadeBubble 0.3s ease;
}

@keyframes fadeBubble {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.message-bubble.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-bubble.bot {
    align-self: flex-start;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.user .message-avatar {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
}

.bot .message-avatar {
    background: rgba(211, 0, 255, 0.08);
    border-color: var(--secondary);
    color: var(--secondary);
}

.message-content-wrapper {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.message-text {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    word-break: break-word;
}

.user .message-text {
    background: rgba(0, 240, 255, 0.04);
    border-color: rgba(0, 240, 255, 0.15);
    border-top-right-radius: 2px;
}

.bot .message-text {
    background: rgba(255, 255, 255, 0.03);
    border-top-left-radius: 2px;
}

/* Markdown parsing output adjustments */
.message-text p {
    margin-bottom: 8px;
}
.message-text p:last-child {
    margin-bottom: 0;
}
.message-text strong {
    color: var(--accent);
}
.message-text ul, .message-text ol {
    margin-left: 20px;
    margin-bottom: 8px;
}

/* Chat Loading */
.typing-dots {
    display: flex;
    gap: 5px;
    align-items: center;
    padding: 5px 10px;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background-color: var(--text-muted);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-6px); }
}

/* Expander Cards (Sources and Reports) */
.expander-card {
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    margin-top: 8px;
    background: rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.expander-header {
    background: rgba(255, 255, 255, 0.02);
    padding: 10px 14px;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    transition: var(--transition);
}

.expander-header:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-main);
}

.expander-body {
    padding: 14px;
    display: none;
    border-top: 1px solid var(--glass-border);
    font-size: 0.82rem;
    color: var(--text-muted);
    max-height: 220px;
    overflow-y: auto;
}

/* Source items cards */
.custom-card {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin-bottom: 10px;
}

.custom-card:last-child {
    margin-bottom: 0;
}

.custom-card .source-tag {
    margin-right: 6px;
    margin-bottom: 6px;
    display: inline-block;
}

.custom-card p {
    font-size: 0.8rem;
    margin-top: 6px;
    line-height: 1.45;
}

/* Evaluation Bars */
.eval-bars-container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
    margin-top: 10px;
}

.eval-bar-wrapper {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    padding: 10px;
    border-radius: var(--radius-sm);
}

.eval-bar-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 4px;
}

.eval-progress-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.eval-progress-bg {
    flex-grow: 1;
    background: rgba(255, 255, 255, 0.05);
    height: 5px;
    border-radius: 4px;
    overflow: hidden;
}

.eval-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--secondary));
    border-radius: 4px;
}

.eval-progress-value {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--secondary);
}

/* Input Area styling */
.chat-input-area {
    flex-shrink: 0;
}

.chat-input-wrapper {
    position: relative;
    display: flex;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    padding: 6px 6px 6px 16px;
    transition: var(--transition);
}

.chat-input-wrapper:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
    background: rgba(255, 255, 255, 0.04);
}

.chat-input-wrapper input {
    flex-grow: 1;
    background: none;
    border: none;
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    padding: 8px 0;
}

.chat-input-wrapper input:focus {
    outline: none;
}

.send-btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--accent);
    border: none;
    color: #000;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    transition: var(--transition);
}

.send-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 10px var(--accent-glow);
}

/* Visualizations Section */
.visualizations-section {
    margin-top: 30px;
}

.section-divider {
    border: 0;
    height: 1px;
    background: var(--glass-border);
    margin-bottom: 20px;
}

.visualizations-section h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.sub-tabs-nav {
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 16px;
}

.sub-tab-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 10px 16px;
    font-size: 0.85rem;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
    font-family: 'Outfit', sans-serif;
}

.sub-tab-btn.active {
    color: var(--accent);
}

.sub-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent);
}

.sub-tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.sub-tab-panel.active {
    display: block;
}

.chart-container-plotly {
    width: 100%;
    height: 350px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.chunks-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
}

.chunk-column h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    margin-bottom: 12px;
    color: var(--text-main);
}

.chunk-list-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* ==================== TAB 2: UPLOAD & INDEX ==================== */
.upload-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 30px;
    align-items: start;
}

.upload-area-card, .indexed-files-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 24px;
}

.upload-area-card h3, .indexed-files-card h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.drag-drop-zone {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: 50px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.01);
}

.drag-drop-zone:hover, .drag-drop-zone.dragover {
    border-color: var(--accent);
    background: var(--accent-soft);
}

.drag-icon {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 16px;
    transition: var(--transition);
}

.drag-drop-zone:hover .drag-icon {
    color: var(--accent);
    transform: translateY(-5px);
}

.drag-drop-zone p span {
    color: var(--accent);
    text-decoration: underline;
    font-weight: 600;
}

.drag-drop-zone small {
    display: block;
    margin-top: 10px;
    color: var(--text-muted);
}

.file-queue-section {
    margin-top: 24px;
    border-top: 1px solid var(--glass-border);
    padding-top: 16px;
}

.file-queue-section h4 {
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.file-queue-list {
    list-style: none;
    margin-bottom: 16px;
    max-height: 150px;
    overflow-y: auto;
}

.file-queue-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
    font-size: 0.82rem;
}

.file-queue-list li button {
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
}

/* Progress Status bar */
.processing-status-container {
    margin-top: 24px;
    border-top: 1px solid var(--glass-border);
    padding-top: 16px;
}

.status-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
    margin-bottom: 8px;
}

.progress-bar-container {
    background: rgba(255, 255, 255, 0.05);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 16px;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--secondary));
    transition: width 0.1s ease;
}

/* Logging box */
.processing-logs-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.logs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    padding: 8px 12px;
    font-size: 0.72rem;
    font-weight: bold;
    color: var(--text-muted);
}

.logs-clear-btn {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
}

.logs-content {
    font-family: monospace;
    font-size: 0.7rem;
    padding: 12px;
    height: 150px;
    overflow-y: auto;
    white-space: pre-wrap;
    color: #6ee7b7;
    margin: 0;
}

/* Indexed Files */
.docs-count-bar {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.indexed-files-list {
    list-style: none;
    max-height: 400px;
    overflow-y: auto;
}

.indexed-files-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--glass-border);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    font-size: 0.85rem;
    transition: var(--transition);
}

.indexed-files-list li:hover {
    border-color: var(--accent-glow);
    background: rgba(255, 255, 255, 0.03);
}

.indexed-files-list li span {
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 75%;
}

.indexed-files-list li button {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.indexed-files-list li button:hover {
    color: #ef4444;
}

/* ==================== TAB 3: DATABASE & LEXICAL ANALYTICS ==================== */
.analytics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: start;
}

.analytics-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 24px;
}

.analytics-card h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.search-box-group input {
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
}

.search-box-group input:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.15);
}

.search-info-bar {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 12px 0;
}

.chunks-results-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 600px;
    overflow-y: auto;
    padding-right: 5px;
}

/* TF-IDF Stats layout */
.corpus-lang-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 50px;
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #fcd34d;
    margin-bottom: 20px;
}

.stats-counters-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
    margin-bottom: 24px;
}

.stats-counters-row .metric-container {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
}

.stats-counters-row .metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.stats-counters-row .metric-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

.chart-wrapper {
    margin-top: 24px;
}

.chart-wrapper h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    color: var(--text-main);
    margin-bottom: 10px;
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 1024px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--glass-border);
        padding: 20px;
    }
    .main-view {
        height: auto;
        overflow-y: auto;
    }
    .tabs-content {
        overflow-y: visible;
    }
    .upload-grid, .analytics-grid {
        grid-template-columns: 1fr;
    }
    .chunks-grid {
        grid-template-columns: 1fr;
    }
    .eval-bars-container {
        grid-template-columns: 1fr;
    }
}