/* ==========================================
   DESIGN SYSTEM & VARIABLES
   ========================================== */
:root {
    /* Theme Colors (Slate Dark Mode) */
    --bg-main: #070a13;
    --bg-sidebar: #0b0f19;
    --bg-card: rgba(17, 24, 39, 0.55);
    --border-card: rgba(255, 255, 255, 0.07);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    /* Semantic / Accent Colors */
    --primary: #10b981; /* Emerald/Teal */
    --primary-glow: rgba(16, 185, 129, 0.25);
    --accent: #3b82f6; /* Blue */
    --accent-glow: rgba(59, 130, 246, 0.2);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Species Colors */
    --setosa: #a855f7; /* Violet */
    --setosa-glow: rgba(168, 85, 247, 0.2);
    --versicolor: #06b6d4; /* Cyan/Teal */
    --versicolor-glow: rgba(6, 182, 212, 0.2);
    --virginica: #ec4899; /* Pink */
    --virginica-glow: rgba(236, 72, 153, 0.2);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Layout Tokens */
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================
   BASE & RESET
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.1) transparent;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(168, 85, 247, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.04) 0%, transparent 60%);
    background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.02em;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ==========================================
   LAYOUT STRUCTURE
   ========================================== */
.dashboard-wrapper {
    display: flex;
    min-height: 100vh;
    position: relative;
}

/* Sidebar Styling */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-card);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    transition: var(--transition-normal);
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-card);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--versicolor));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 16px rgba(16, 185, 129, 0.3);
    color: white;
}

.logo-icon i {
    width: 22px;
    height: 22px;
}

.logo-text h1 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.1;
}

.logo-text span {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar-nav {
    flex: 1;
    padding: 24px 16px;
}

.sidebar-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-nav li {
    position: relative;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.sidebar-nav a i {
    width: 20px;
    height: 20px;
}

.sidebar-nav li:hover a {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.03);
}

.sidebar-nav li.active a {
    color: #fff;
    background-color: var(--primary-glow);
    border: 1px solid rgba(16, 185, 129, 0.15);
}

.sidebar-nav li.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 25%;
    height: 50%;
    width: 4px;
    background-color: var(--primary);
    border-radius: 0 4px 4px 0;
}

.sidebar-footer {
    padding: 24px 16px;
    border-top: 1px solid var(--border-card);
}

.author-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: rgba(255,255,255,0.02);
    padding: 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-card);
}

.avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--setosa));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
}

.author-info h4 {
    font-size: 0.88rem;
    color: #fff;
}

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

/* Main Content Styling */
.main-content {
    margin-left: 260px;
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 32px 40px;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.header-titles .breadcrumbs {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.header-titles h2 {
    font-size: 1.85rem;
    color: #fff;
    font-weight: 700;
}

.pill-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 0.82rem;
    font-weight: 600;
    border: 1px solid transparent;
}

.active-pill {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--primary);
    border-color: rgba(16, 185, 129, 0.2);
}

.active-pill .dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--primary);
    animation: pulse 1.8s infinite;
}

/* ==========================================
   SECTIONS & TABBING CONTROL
   ========================================== */
.dashboard-section {
    display: none;
    animation: fadeIn var(--transition-normal);
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================
   GLASS CARDS (PREMIUM BOXES)
   ========================================== */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.full-width-card {
    width: 100%;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-card);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.title-with-icon {
    display: flex;
    align-items: center;
    gap: 12px;
}

.title-with-icon i {
    width: 22px;
    height: 22px;
}

.title-with-icon h3 {
    font-size: 1.1rem;
    color: #fff;
    font-weight: 600;
}

.badge {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-card);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--primary);
    border-color: rgba(16, 185, 129, 0.15);
}

.badge-accent {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent);
    border-color: rgba(59, 130, 246, 0.15);
}

.card-body {
    padding: 24px;
    flex: 1;
}

/* ==========================================
   GRID TEMPLATES
   ========================================== */
.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.mt-large { margin-top: 24px; }
.mt-small { margin-top: 8px; }

/* ==========================================
   PREDICTOR SLIDERS
   ========================================== */
.sliders-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 24px;
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.88rem;
}

.slider-name {
    color: var(--text-secondary);
    font-weight: 600;
}

.slider-val {
    color: var(--primary);
    font-weight: 700;
}

/* Custom Range Input */
.custom-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    outline: none;
    transition: var(--transition-fast);
}

.custom-slider:hover {
    background: rgba(255, 255, 255, 0.15);
}

.custom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
    transition: transform 0.1s ease;
}

.custom-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.custom-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
    transition: transform 0.1s ease;
}

.custom-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
}

.slider-limits {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* Select Styling */
.model-picker-wrapper {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.model-picker-wrapper label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.select-container {
    position: relative;
    width: 100%;
}

.custom-select {
    width: 100%;
    appearance: none;
    -webkit-appearance: none;
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.92rem;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

.custom-select:hover {
    background-color: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.15);
}

.custom-select option {
    background-color: #0b0f19;
    color: #fff;
}

.select-arrow {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-secondary);
    width: 16px;
    height: 16px;
}

/* ==========================================
   FLOWER SVG VISUALIZER
   ========================================== */
.centered-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.flower-visualizer-container {
    width: 220px;
    height: 220px;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    border: 1px solid var(--border-card);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.4);
}

.flower-svg {
    width: 100%;
    height: 100%;
}

#flower-glow {
    transition: fill var(--transition-normal), opacity var(--transition-normal);
}

/* Predictions Styling */
.predictions-display {
    width: 100%;
    border-top: 1px solid var(--border-card);
    padding-top: 16px;
}

.result-heading {
    text-align: center;
    margin-bottom: 16px;
}

.result-heading .small-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.result-heading h3 {
    font-size: 1.5rem;
    color: var(--species-color, var(--primary));
    font-weight: 700;
    transition: color 0.3s ease;
}

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

.prob-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.prob-meta {
    display: flex;
    align-items: center;
    font-size: 0.82rem;
}

.species-label-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
}

.setosa-dot { background-color: var(--setosa); }
.versicolor-dot { background-color: var(--versicolor); }
.virginica-dot { background-color: var(--virginica); }

.species-name {
    color: var(--text-secondary);
    font-weight: 500;
}

.prob-pct {
    margin-left: auto;
    font-weight: 700;
    color: #fff;
}

.progress-bar-bg {
    width: 100%;
    height: 6px;
    background-color: rgba(255, 255, 255, 0.04);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 4px;
    width: 0%;
    transition: width 0.4s cubic-bezier(0.1, 0.8, 0.2, 1);
}

.setosa-fill { background: var(--setosa); }
.versicolor-fill { background: var(--versicolor); }
.virginica-fill { background: var(--virginica); }

/* ==========================================
   MODEL SANDBOX (TRAINING)
   ========================================== */
.radio-group-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 10px;
    margin-bottom: 24px;
}

.radio-card {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    text-align: center;
    transition: var(--transition-fast);
    position: relative;
}

.radio-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.radio-card-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.radio-card-content i {
    width: 24px;
    height: 24px;
    transition: var(--transition-fast);
}

.radio-card-content span {
    font-size: 0.82rem;
    font-weight: 600;
}

.radio-card:hover {
    background-color: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.12);
}

.radio-card.active {
    background-color: var(--accent-glow);
    border-color: var(--accent);
}

.radio-card.active .radio-card-content {
    color: #fff;
}

/* Hyperparameters container dynamic display */
.param-block {
    display: none;
}

.param-block.active {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.param-select {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.param-select label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.separator {
    border: 0;
    height: 1px;
    background-color: var(--border-card);
    margin: 20px 0;
}

/* Buttons */
.primary-btn {
    background: linear-gradient(135deg, var(--primary), var(--versicolor));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: 14px 28px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition-fast);
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

.primary-btn:active {
    transform: translateY(0);
}

.btn-icon {
    width: 18px;
    height: 18px;
}

/* ==========================================
   METRICS DISPLAY
   ========================================== */
.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.metric-card {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
}

.metric-lbl {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 6px;
}

.metric-card h2 {
    font-size: 2rem;
    color: #fff;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
}

.metric-sub {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.section-subheading {
    font-size: 0.92rem;
    color: var(--text-secondary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

/* Table Style */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    background-color: rgba(0, 0, 0, 0.15);
}

.report-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: left;
}

.report-table th, .report-table td {
    padding: 10px 14px;
}

.report-table th {
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 1px solid var(--border-card);
}

.report-table td {
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
}

.report-table tr:last-child td {
    border-bottom: none;
}

/* Confusion Matrix Grid */
.matrix-flex-container {
    display: flex;
    align-items: center;
    gap: 32px;
}

.confusion-matrix {
    display: grid;
    grid-template-columns: repeat(4, 52px);
    grid-template-rows: repeat(4, 40px);
    gap: 4px;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-card);
    padding: 10px;
    border-radius: var(--radius-md);
}

.matrix-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 4px;
}

.header-cell {
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 700;
}

.label-cell {
    justify-content: flex-end;
    padding-right: 8px;
}

.data-cell {
    background-color: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    transition: background-color 0.3s ease;
}

.highlight-cell {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--primary);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.matrix-explanation p {
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.bullet {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.setosa-bullet { background-color: var(--setosa); }
.versicolor-bullet { background-color: var(--versicolor); }
.virginica-bullet { background-color: var(--virginica); }

/* ==========================================
   DATA EXPLORER CHART
   ========================================== */
.chart-controls {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.chart-controls .select-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chart-controls label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.chart-canvas-container {
    position: relative;
    height: 380px;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-card);
    padding: 16px;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.3);
}

.chart-legend-box {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.setosa-color { background-color: var(--setosa); }
.versicolor-color { background-color: var(--versicolor); }
.virginica-color { background-color: var(--virginica); }
.user-target-color { 
    background-color: #ffffff;
    border: 2px solid #000;
    box-shadow: 0 0 8px #ffffff;
}

/* =text coloring semantic icons= */
.icon-teal { color: var(--primary); }
.icon-violet { color: var(--setosa); }
.icon-blue { color: var(--accent); }
.icon-green { color: var(--success); }
.icon-pink { color: var(--virginica); }

/* ==========================================
   ACCORDION (FAQ)
   ========================================== */
.accordion-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.accordion-item {
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    background-color: rgba(255, 255, 255, 0.01);
    overflow: hidden;
    transition: var(--transition-fast);
}

.accordion-item:hover {
    border-color: rgba(255, 255, 255, 0.12);
    background-color: rgba(255, 255, 255, 0.03);
}

.accordion-trigger {
    padding: 18px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    color: #fff;
    user-select: none;
}

.accordion-trigger i {
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
    transition: transform var(--transition-fast);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    padding: 0 24px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
}

.accordion-item.active .accordion-trigger i {
    transform: rotate(180deg);
    color: var(--primary);
}

.accordion-item.active .accordion-content {
    max-height: 1000px; /* arbitrary high number */
    padding-bottom: 18px;
}

/* ==========================================
   CODE SHOWCASE (TABS)
   ========================================== */
.tabs-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tabs-header {
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--border-card);
    padding-bottom: 12px;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 8px 16px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.tab-btn:hover {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
    color: var(--primary);
    background-color: var(--primary-glow);
}

.tabs-content {
    background-color: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 20px;
    overflow-x: auto;
}

.tab-panel {
    display: none;
}

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

pre {
    margin: 0;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 0.88rem;
    color: #e5e7eb;
}

code {
    background: none;
    padding: 0;
}

/* ==========================================
   UTILITY & MISC
   ========================================== */
@keyframes pulse {
    0% { transform: scale(0.9); opacity: 0.6; }
    50% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 12px var(--primary); }
    100% { transform: scale(0.9); opacity: 0.6; }
}

.blinking {
    animation: blinker 1.2s cubic-bezier(0.5, 0, 1, 1) infinite alternate;
}

@keyframes blinker {
    from { opacity: 1; transform: scale(1); }
    to { opacity: 0.4; transform: scale(1.4); }
}

/* Spinner Loader during Training */
.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.2);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ==========================================
   RESPONSIVENESS (MOBILE FRIENDLY)
   ========================================== */
@media (max-width: 1024px) {
    .sidebar {
        width: 80px;
    }
    .sidebar-header .logo-text,
    .sidebar-nav span,
    .sidebar-footer .author-info {
        display: none;
    }
    .sidebar-header {
        padding: 16px;
    }
    .logo-area {
        justify-content: center;
    }
    .sidebar-nav a {
        justify-content: center;
        padding: 12px;
    }
    .sidebar-footer {
        padding: 16px;
    }
    .author-badge {
        justify-content: center;
        padding: 8px;
    }
    .main-content {
        margin-left: 80px;
        padding: 24px 30px;
    }
}

@media (max-width: 768px) {
    .grid-2-col {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .main-content {
        padding: 16px 20px;
    }
    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    .radio-group-cards {
        grid-template-columns: 1fr;
    }
    .matrix-flex-container {
        flex-direction: column;
        align-items: flex-start;
    }
}