/* ===================================
   STUDY LAB - STYLES
   Techma Zone Educational Platform
   =================================== */

/* ===================================
   CURSOR GLOW EFFECT
   =================================== */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(247, 167, 0, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
}

@media (max-width: 992px), (hover: none) {
    .cursor-glow {
        display: none !important;
    }
}

/* ===================================
   READING PROGRESS BAR
   =================================== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-orange), var(--secondary-blue));
    z-index: 10001;
    width: 0%;
    transition: width 0.1s linear;
}

/* ===================================
   GUIDE HERO SECTION
   =================================== */
.guide-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 120px 40px 80px;
}

.guide-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.guide-hero-bg canvas {
    width: 100%;
    height: 100%;
}

.guide-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.guide-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    font-size: 13px;
    color: var(--text-gray);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.guide-breadcrumb a {
    color: var(--text-gray);
    transition: color 0.3s ease;
}

.guide-breadcrumb a:hover {
    color: var(--accent-orange);
}

.guide-breadcrumb .current {
    color: var(--accent-orange);
}

.guide-hero-badge {
    display: inline-block;
    background: rgba(247, 167, 0, 0.1);
    border: 1px solid rgba(247, 167, 0, 0.3);
    color: var(--accent-orange);
    padding: 8px 24px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 30px;
}

.guide-hero-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(3rem, 8vw, 7rem);
    letter-spacing: 4px;
    line-height: 1;
    margin-bottom: 25px;
    background: linear-gradient(135deg, var(--pure-white) 0%, var(--text-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.guide-hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-gray);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto 40px;
}

.guide-hero-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-gray);
    background: rgba(255, 255, 255, 0.05);
    padding: 8px 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.meta-icon {
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    color: var(--accent-orange);
}

.meta-icon svg {
    width: 18px;
    height: 18px;
}

.guide-start-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--gradient-primary);
    color: var(--dark-navy);
    padding: 18px 40px;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: all 0.4s ease;
}

.guide-start-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(247, 167, 0, 0.4);
}

.guide-start-btn span {
    font-size: 20px;
    animation: bounceDown 2s ease infinite;
}

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

/* ===================================
   TABLE OF CONTENTS (Floating)
   =================================== */
.guide-toc {
    position: fixed;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    background: rgba(10, 22, 40, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 180, 216, 0.2);
    padding: 20px 16px;
    max-width: 180px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.guide-toc.visible {
    opacity: 1;
    visibility: visible;
}

.toc-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 14px;
    letter-spacing: 2px;
    color: var(--accent-orange);
    margin-bottom: 15px;
    text-transform: uppercase;
}

.toc-link {
    display: block;
    font-size: 11px;
    color: var(--text-gray);
    padding: 6px 0;
    border-left: 2px solid transparent;
    padding-left: 10px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.toc-link:hover,
.toc-link.active {
    color: var(--accent-orange);
    border-left-color: var(--accent-orange);
}

@media (max-width: 1400px) {
    .guide-toc {
        display: none;
    }
}

/* ===================================
   GUIDE MAIN CONTENT
   =================================== */
.guide-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 40px 100px;
}

.guide-section {
    padding: 80px 0;
    position: relative;
}

.section-number {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 120px;
    color: rgba(247, 167, 0, 0.05);
    position: absolute;
    top: 40px;
    right: 0;
    line-height: 1;
    pointer-events: none;
}

.guide-section-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(2rem, 4vw, 3.5rem);
    letter-spacing: 2px;
    margin-bottom: 15px;
    color: var(--pure-white);
}

.guide-section-desc {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.7;
}

/* ===================================
   GLASS CARDS
   =================================== */
.glass-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 180, 216, 0.15);
    backdrop-filter: blur(10px);
    padding: 40px;
    margin-bottom: 30px;
    transition: all 0.4s ease;
    position: relative;
    overflow: visible;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(0, 180, 216, 0.3), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.glass-card:hover {
    border-color: rgba(0, 180, 216, 0.3);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
}

.glass-card:hover::before {
    opacity: 1;
}

.glass-card h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.8rem;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: var(--pure-white);
}

.glass-card p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 15px;
    font-size: 15px;
}

.glass-card h4 {
    color: var(--pure-white);
    font-size: 1.1rem;
    margin-bottom: 12px;
    margin-top: 25px;
}

.glass-card strong {
    color: var(--pure-white);
}

.glass-card em {
    color: var(--secondary-blue);
}

/* ===================================
   MATH BLOCKS
   =================================== */
.math-block {
    background: rgba(0, 0, 0, 0.3);
    border-left: 3px solid var(--accent-orange);
    padding: 20px 25px;
    margin: 20px 0;
    overflow-x: visible;
    overflow-y: visible;
    font-size: 1.1rem;
    box-sizing: border-box;
}

.math-block .katex-display {
    overflow-x: visible;
    overflow-y: visible;
    margin: 0;
}

.math-block .katex-display > .katex {
    display: inline-block;
    max-width: 100%;
}

.math-block .katex {
    font-size: 1em;
}

.math-block.small {
    padding: 12px 18px;
    font-size: 0.95rem;
}

.math-block.small .katex {
    font-size: 0.95em;
}

@media (max-width: 600px) {
    .math-block {
        padding: 15px 15px;
        font-size: 0.9rem;
    }
    .math-block .katex {
        font-size: 0.85em;
    }
    .math-block.small .katex {
        font-size: 0.8em;
    }
}

.math-block.highlight {
    border-left-color: var(--secondary-blue);
    background: rgba(0, 119, 182, 0.08);
}

.math-inline {
    color: var(--secondary-blue);
}

/* Inline code elements — prevent overflow on mobile */
.guide-content code,
.glass-card code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85em;
    background: rgba(0, 180, 216, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--secondary-blue);
    word-break: break-all;
    overflow-wrap: break-word;
}

/* ===================================
   CHART CONTAINERS
   =================================== */
.chart-container {
    position: relative;
    margin: 30px 0;
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    /* Explicit height so Chart.js (with maintainAspectRatio:false) has
       enough vertical space — especially on narrow mobile screens */
    height: 380px;
}

@media (max-width: 768px) {
    .chart-container {
        height: 300px;
    }
}

.chart-container canvas {
    display: block;
    box-sizing: border-box;
    width: 100% !important;
}

/* ===================================
   INTERACTIVE CONTAINERS
   =================================== */
.interactive-container {
    margin: 30px 0;
    padding: 30px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(0, 180, 216, 0.2);
    position: relative;
}

.interactive-container.large {
    padding: 20px;
}

.interactive-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.3rem;
    letter-spacing: 1px;
    color: var(--accent-orange);
    margin-bottom: 8px !important;
    margin-top: 0 !important;
}

.interactive-desc {
    font-size: 13px !important;
    color: var(--text-gray) !important;
    margin-bottom: 20px !important;
}

.interactive-container canvas {
    display: block;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    background: rgba(5, 13, 24, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===================================
   SLIDER CONTROLS
   =================================== */
.slider-controls {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    align-items: flex-end;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.slider-group {
    flex: 1;
    min-width: 180px;
}

.slider-group label {
    display: block;
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 8px;
    font-weight: 500;
}

.slider-group label span {
    color: var(--accent-orange);
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

.slider-group input[type="range"] {
    width: 100%;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    border-radius: 2px;
}

.slider-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-orange);
    cursor: pointer;
    transition: transform 0.2s ease;
}

.slider-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.3);
}

.slider-group input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-orange);
    cursor: pointer;
    border: none;
}

.btn-interactive {
    background: rgba(0, 180, 216, 0.2);
    border: 1px solid rgba(0, 180, 216, 0.4);
    color: var(--secondary-blue);
    padding: 10px 24px;
    font-family: 'Outfit', sans-serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-interactive:hover {
    background: rgba(0, 180, 216, 0.3);
    transform: translateY(-2px);
}

.btn-interactive.accent {
    background: rgba(247, 167, 0, 0.2);
    border-color: rgba(247, 167, 0, 0.4);
    color: var(--accent-orange);
}

.btn-interactive.accent:hover {
    background: rgba(247, 167, 0, 0.3);
}

.btn-interactive.danger {
    background: rgba(255, 68, 68, 0.2);
    border-color: rgba(255, 68, 68, 0.4);
    color: #ff6b6b;
}

.btn-interactive.danger:hover {
    background: rgba(255, 68, 68, 0.3);
}

/* ===================================
   THREE.JS CONTAINERS
   =================================== */
.threejs-container {
    width: 100%;
    height: 400px;
    background: rgba(5, 13, 24, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.threejs-container.large {
    height: 500px;
}

.threejs-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

/* ===================================
   INFO CALLOUTS
   =================================== */
.info-callout {
    display: flex;
    gap: 15px;
    padding: 20px;
    margin: 20px 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.info-callout.warning {
    background: rgba(247, 167, 0, 0.05);
    border-color: rgba(247, 167, 0, 0.2);
}

.info-callout.warning .callout-icon {
    color: var(--accent-orange);
}

.info-callout.danger {
    background: rgba(255, 68, 68, 0.05);
    border-color: rgba(255, 68, 68, 0.2);
}

.info-callout.danger .callout-icon {
    color: #ff4444;
}

.info-callout.success {
    background: rgba(0, 180, 216, 0.05);
    border-color: rgba(0, 180, 216, 0.2);
}

.info-callout.success .callout-icon {
    color: var(--secondary-blue);
}

.callout-icon {
    font-size: 24px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
}

.callout-icon svg {
    width: 24px;
    height: 24px;
}

.callout-content h4 {
    font-size: 1rem;
    margin-bottom: 10px !important;
    margin-top: 0 !important;
    color: var(--pure-white);
}

.callout-content ol,
.callout-content ul {
    padding-left: 20px;
}

.callout-content li {
    color: var(--text-gray);
    margin-bottom: 8px;
    line-height: 1.6;
    font-size: 14px;
}

.callout-content p {
    font-size: 14px;
}

/* ===================================
   FEATURE GRID
   =================================== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.feature-item {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 25px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-item:hover {
    border-color: rgba(0, 180, 216, 0.3);
    transform: translateY(-3px);
}

.feature-icon {
    font-size: 32px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    color: var(--secondary-blue);
    background: rgba(0, 180, 216, 0.08);
    border: 1px solid rgba(0, 180, 216, 0.15);
    border-radius: 12px;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-item h4 {
    font-size: 0.95rem;
    margin-bottom: 8px !important;
    margin-top: 0 !important;
}

.feature-item p {
    font-size: 13px !important;
    margin-bottom: 0 !important;
}

/* ===================================
   TIMELINE
   =================================== */
.timeline-block {
    position: relative;
    padding-left: 30px;
    margin: 30px 0;
}

.timeline-block::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-orange), var(--secondary-blue));
}

.timeline-item {
    position: relative;
    padding: 15px 0;
    padding-left: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -26px;
    top: 22px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-orange);
    border: 2px solid var(--darker-navy);
}

.timeline-year {
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    color: var(--accent-orange);
    font-weight: 600;
    margin-bottom: 5px;
}

.timeline-text {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* ===================================
   STYLED LISTS
   =================================== */
.styled-list {
    padding-left: 0;
    list-style: none;
}

.styled-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 12px;
    color: var(--text-gray);
    line-height: 1.7;
    font-size: 15px;
}

.styled-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--accent-orange);
    border-radius: 50%;
}

/* ===================================
   CONCEPT STEPS
   =================================== */
.concept-steps {
    margin: 25px 0;
}

.concept-step {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    padding: 25px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.concept-step:hover {
    border-color: rgba(0, 180, 216, 0.2);
}

.step-num {
    width: 40px;
    height: 40px;
    min-width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(247, 167, 0, 0.1);
    border: 1px solid rgba(247, 167, 0, 0.3);
    color: var(--accent-orange);
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.3rem;
}

.step-content h4 {
    margin-top: 0 !important;
    margin-bottom: 8px !important;
}

.step-content p {
    margin-bottom: 10px !important;
}

/* ===================================
   PROPERTIES GRID
   =================================== */
.properties-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 25px 0;
}

.property-item {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 20px;
    text-align: center;
}

.property-item p {
    font-size: 12px !important;
    margin-bottom: 0 !important;
}

/* ===================================
   DERIVATION BOX
   =================================== */
.derivation-box {
    background: rgba(0, 119, 182, 0.05);
    border: 1px solid rgba(0, 119, 182, 0.2);
    padding: 30px;
    margin: 25px 0;
}

.derivation-box h4 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.3rem;
    letter-spacing: 1px;
    color: var(--secondary-blue);
    margin-bottom: 20px !important;
    margin-top: 0 !important;
}

.derivation-step {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.6;
}

.derivation-step:last-child {
    border-bottom: none;
}

.step-label,
.case-label {
    display: inline-block;
    color: var(--accent-orange);
    font-weight: 700;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-right: 8px;
}

.derivation-case {
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.derivation-case:last-child {
    border-bottom: none;
}

/* ===================================
   COMPARISON GRID
   =================================== */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin: 20px 0;
}

.comparison-item {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 30px;
}

.comparison-item.no {
    border-color: rgba(255, 68, 68, 0.2);
}

.comparison-item.yes {
    border-color: rgba(0, 180, 216, 0.2);
}

.comparison-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.comparison-icon {
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
}

.comparison-icon svg {
    width: 24px;
    height: 24px;
}

.comparison-header h4 {
    margin: 0 !important;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.3rem;
    letter-spacing: 1px;
}

.method-list {
    margin-top: 15px;
}

.method-item {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.method-item:last-child {
    border-bottom: none;
}

.method-item h5 {
    color: var(--secondary-blue);
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.method-item p {
    font-size: 13px !important;
    margin-bottom: 0 !important;
}

/* ===================================
   LEARNING RATE COMPARISON
   =================================== */
.lr-comparison {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin: 25px 0;
}

.lr-item {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 20px;
    text-align: center;
}

.lr-item.highlight {
    border-color: rgba(0, 180, 216, 0.3);
    background: rgba(0, 180, 216, 0.05);
}

.lr-item h4 {
    font-size: 0.9rem;
    margin-bottom: 8px !important;
    margin-top: 0 !important;
}

.lr-item p {
    font-size: 13px !important;
    margin-bottom: 0 !important;
}

/* ===================================
   PLAYGROUND CONTROLS
   =================================== */
.playground-controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 15px;
}

.model-info {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 15px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--text-gray);
}

.model-info span span {
    color: var(--accent-orange);
}

/* ===================================
   PROS & CONS
   =================================== */
.pros-cons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.pros-section h3,
.cons-section h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 25px !important;
}

.icon-pro {
    color: #4ecdc4;
}

.icon-con {
    color: #ff6b6b;
}

.pros-item,
.cons-item {
    padding: 20px;
    margin-bottom: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(0, 0, 0, 0.15);
}

.pros-item {
    border-left: 3px solid rgba(78, 205, 196, 0.5);
}

.cons-item {
    border-left: 3px solid rgba(255, 107, 107, 0.5);
}

.pros-item h4,
.cons-item h4 {
    font-size: 0.95rem;
    margin-bottom: 8px !important;
    margin-top: 0 !important;
}

.pros-item p,
.cons-item p {
    font-size: 13px !important;
    margin-bottom: 0 !important;
}

/* ===================================
   NEURAL NETWORK DIAGRAM
   =================================== */
.neural-network-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    padding: 40px;
    margin: 25px 0;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow-x: auto;
}

.nn-layer {
    text-align: center;
}

.nn-label {
    font-size: 11px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.nn-node {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid rgba(0, 180, 216, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--secondary-blue);
    margin: 8px auto;
    background: rgba(0, 180, 216, 0.05);
}

.nn-node.active {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
    background: rgba(247, 167, 0, 0.1);
    width: 100px;
    height: 60px;
    border-radius: 10px;
    font-size: 10px;
}

.nn-dots {
    color: var(--text-gray);
    padding: 5px 0;
    font-size: 18px;
}

.nn-arrows {
    color: var(--text-gray);
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
}

/* ===================================
   NEXT SECTION
   =================================== */
.guide-next-section {
    padding: 100px 40px;
    background: var(--dark-navy);
}

.guide-next-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.guide-next-content h2 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 2.5rem;
    letter-spacing: 2px;
    margin-bottom: 50px;
}

.next-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.next-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 180, 216, 0.15);
    padding: 40px 30px;
    text-align: center;
    transition: all 0.4s ease;
}

.next-card:hover {
    transform: translateY(-5px);
    border-color: rgba(247, 167, 0, 0.3);
    background: rgba(255, 255, 255, 0.05);
}

.next-card-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin-left: auto;
    margin-right: auto;
    color: var(--accent-orange);
}

.next-card-icon svg {
    width: 48px;
    height: 48px;
}

.next-card h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.5rem;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.next-card p {
    color: var(--text-gray);
    font-size: 14px;
}

/* ===================================
   GUIDE FOOTER
   =================================== */
.guide-footer {
    padding: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-content p {
    color: var(--text-gray);
    font-size: 13px;
}

.footer-links {
    display: flex;
    gap: 25px;
}

.footer-links a {
    color: var(--text-gray);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-orange);
}

/* ===================================
   GUIDES LISTING PAGE
   =================================== */
.guides-hero {
    padding: 150px 40px 80px;
    text-align: center;
    background: linear-gradient(180deg, rgba(0, 119, 182, 0.08) 0%, transparent 100%);
}

.guides-listing-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 40px 100px;
}

.guides-grid {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.guide-listing-card {
    display: flex;
    gap: 30px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 180, 216, 0.15);
    padding: 35px;
    transition: all 0.4s ease;
    text-decoration: none;
    color: inherit;
}

.guide-listing-card:hover {
    border-color: rgba(247, 167, 0, 0.3);
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.05);
}

.guide-listing-card.coming-soon {
    opacity: 0.5;
    pointer-events: none;
}

.guide-listing-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 180, 216, 0.06);
    border: 1px solid rgba(0, 180, 216, 0.15);
}

.guide-listing-icon svg {
    width: 48px;
    height: 48px;
    color: var(--secondary-blue);
}

.guide-listing-info {
    flex: 1;
}

.guide-listing-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.guide-listing-badge {
    background: rgba(0, 180, 216, 0.15);
    color: var(--secondary-blue);
    padding: 4px 12px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.guide-listing-badge.coming-soon-badge {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-gray);
}

.guide-listing-detail {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: var(--text-gray);
}

.guide-listing-detail svg {
    color: var(--text-gray);
    flex-shrink: 0;
}

.guide-listing-info h2 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 2rem;
    letter-spacing: 2px;
    margin-bottom: 4px;
    line-height: 1.1;
}

.guide-listing-subtitle {
    font-size: 13px;
    color: var(--accent-orange);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.guide-listing-desc {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
}

.guide-listing-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.guide-listing-topics span {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 4px 12px;
    font-size: 11px;
    color: var(--text-gray);
    letter-spacing: 0.5px;
}

.guide-listing-cta {
    display: inline-block;
    color: var(--accent-orange);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.guide-listing-card:hover .guide-listing-cta {
    letter-spacing: 2px;
}

@media (max-width: 768px) {
    .guide-listing-card {
        flex-direction: column;
        padding: 25px;
        gap: 20px;
    }

    .guide-listing-icon {
        width: 60px;
        height: 60px;
    }

    .guide-listing-icon svg {
        width: 36px;
        height: 36px;
    }

    .guide-listing-info h2 {
        font-size: 1.6rem;
    }
}

/* ===================================
   CHEAT SHEET STYLES
   =================================== */
.cheatsheet-hero {
    padding: 150px 40px 80px;
    text-align: center;
    background: linear-gradient(180deg, rgba(0, 119, 182, 0.08) 0%, transparent 100%);
}

.cheatsheet-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px 100px;
}

.cheatsheet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
}

.cheat-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 180, 216, 0.15);
    backdrop-filter: blur(10px);
    overflow: visible;
    transition: all 0.4s ease;
}

.cheat-card:hover {
    border-color: rgba(0, 180, 216, 0.3);
    transform: translateY(-3px);
}

.cheat-card.wide {
    grid-column: 1 / -1;
}

.cheat-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 25px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.cheat-icon {
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    color: var(--accent-orange);
}

.cheat-icon svg {
    width: 24px;
    height: 24px;
}

.cheat-card-header h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.3rem;
    letter-spacing: 1px;
    margin: 0;
}

.cheat-card-body {
    padding: 25px;
}

.formula-row {
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.formula-row:last-child {
    border-bottom: none;
}

.formula-label {
    display: block;
    font-size: 12px;
    color: var(--accent-orange);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    margin-bottom: 5px;
}

.cheat-steps {
    padding-left: 20px;
    counter-reset: step;
}

.cheat-steps li {
    color: var(--text-gray);
    font-size: 14px;
    padding: 8px 0;
    line-height: 1.6;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.cheat-steps li:last-child {
    border-bottom: none;
}

.cheat-list {
    list-style: none;
    padding: 0;
}

.cheat-list li {
    position: relative;
    padding-left: 18px;
    padding: 6px 0 6px 18px;
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.6;
}

.cheat-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--secondary-blue);
}

.cheat-list.danger li::before {
    background: #ff6b6b;
}

.cheat-note {
    font-size: 13px !important;
    color: var(--secondary-blue) !important;
    font-style: italic;
    margin-top: 15px !important;
    padding-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.interview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.interview-item {
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.interview-item h4 {
    font-size: 0.9rem;
    color: var(--accent-orange);
    margin-bottom: 10px;
}

.interview-item p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* ===================================
   BLOG STYLES
   =================================== */
.blog-hero {
    padding: 150px 40px 80px;
    text-align: center;
    background: linear-gradient(180deg, rgba(247, 167, 0, 0.05) 0%, transparent 100%);
}

.blog-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 40px 60px;
}

.blog-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.blog-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 180, 216, 0.15);
    overflow: hidden;
    transition: all 0.4s ease;
    display: grid;
    grid-template-columns: 280px 1fr;
}

.blog-card:hover {
    border-color: rgba(0, 180, 216, 0.3);
    transform: translateY(-3px);
}

.blog-card.featured {
    grid-template-columns: 320px 1fr;
}

.blog-card-image {
    position: relative;
    min-height: 180px;
    background: linear-gradient(135deg, rgba(0, 119, 182, 0.1), rgba(247, 167, 0, 0.05));
    display: flex;
    align-items: center;
    justify-content: center;
}

.blog-card-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    min-height: 180px;
}

.placeholder-icon {
    opacity: 0.5;
    transition: opacity 0.3s ease;
}

.blog-card:hover .placeholder-icon {
    opacity: 0.8;
}

.blog-card-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--accent-orange);
    color: var(--dark-navy);
    padding: 4px 12px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.blog-card-content {
    padding: 30px;
}

.blog-card-meta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.blog-date,
.blog-category,
.blog-read-time {
    font-size: 12px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.blog-category {
    color: var(--secondary-blue);
}

.blog-card-content h2 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.8rem;
    letter-spacing: 1px;
    margin-bottom: 15px;
    line-height: 1.2;
}

.blog-excerpt {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.blog-article-body {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 25px;
    margin-top: 10px;
}

.blog-article-body h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.4rem;
    letter-spacing: 1px;
    margin-bottom: 12px;
    margin-top: 30px;
    color: var(--pure-white);
}

.blog-article-body h3:first-child {
    margin-top: 0;
}

.blog-article-body p {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
}

.blog-article-body ul {
    padding-left: 20px;
    margin-bottom: 15px;
}

.blog-article-body li {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 8px;
}

.blog-article-body strong {
    color: var(--pure-white);
}

.blog-article-body em {
    color: var(--secondary-blue);
}

.blog-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.blog-tag {
    background: rgba(0, 180, 216, 0.1);
    border: 1px solid rgba(0, 180, 216, 0.2);
    padding: 4px 12px;
    font-size: 11px;
    color: var(--secondary-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.blog-card.coming-soon {
    opacity: 0.6;
}

.blog-card.coming-soon:hover {
    opacity: 0.8;
}

a.blog-card {
    text-decoration: none;
    color: inherit;
    display: grid;
    cursor: pointer;
}

a.blog-card.featured {
    display: grid;
}

.blog-card.featured .blog-card-image {
    min-height: 220px;
}

.blog-read-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-blue);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    margin-bottom: 15px;
}

.blog-card:hover .blog-read-more {
    color: var(--accent-orange);
    gap: 12px;
}

.blog-read-more svg {
    transition: transform 0.3s ease;
}

.blog-card:hover .blog-read-more svg {
    transform: translateX(4px);
}

/* Blog Post Page */
.blog-post-hero {
    padding: 140px 40px 60px;
    text-align: center;
    background: linear-gradient(180deg, rgba(0, 119, 182, 0.08) 0%, transparent 100%);
}

.blog-post-meta {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.blog-post-meta span {
    font-size: 12px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.blog-post-meta .blog-category {
    color: var(--secondary-blue);
}

.blog-post-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: 2px;
    line-height: 1.1;
    margin-bottom: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.blog-post-excerpt {
    color: var(--text-gray);
    font-size: 16px;
    line-height: 1.7;
    max-width: 700px;
    margin: 0 auto;
}

.blog-post-content {
    max-width: 780px;
    margin: 0 auto;
    padding: 40px 40px 80px;
}

.blog-post-content h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.6rem;
    letter-spacing: 1px;
    margin-bottom: 15px;
    margin-top: 40px;
    color: var(--pure-white);
}

.blog-post-content h3:first-child {
    margin-top: 0;
}

.blog-post-content p {
    color: var(--text-gray);
    font-size: 15px;
    line-height: 1.9;
    margin-bottom: 18px;
}

.blog-post-content ul {
    padding-left: 24px;
    margin-bottom: 18px;
}

.blog-post-content li {
    color: var(--text-gray);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 10px;
}

.blog-post-content strong {
    color: var(--pure-white);
}

.blog-post-content em {
    color: var(--secondary-blue);
}

.blog-post-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.blog-post-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-blue);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 40px;
    transition: all 0.3s ease;
}

.blog-post-back:hover {
    color: var(--accent-orange);
    gap: 12px;
}

/* ===================================
   NEWSLETTER
   =================================== */
.blog-newsletter {
    padding: 80px 40px;
    background: var(--dark-navy);
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-content h2 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 2.5rem;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.newsletter-content p {
    color: var(--text-gray);
    margin-bottom: 30px;
}

.newsletter-form {
    display: flex;
    gap: 10px;
}

.newsletter-input {
    flex: 1;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 180, 216, 0.3);
    color: var(--pure-white);
    font-family: 'Outfit', sans-serif;
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s ease;
}

.newsletter-input:focus {
    border-color: var(--accent-orange);
}

.newsletter-input::placeholder {
    color: var(--text-gray);
}

.newsletter-btn {
    white-space: nowrap;
}

/* ===================================
   BACK TO TOP
   =================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(247, 167, 0, 0.2);
    border: 1px solid rgba(247, 167, 0, 0.4);
    color: var(--accent-orange);
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent-orange);
    color: var(--dark-navy);
    transform: translateY(-3px);
}

/* ===================================
   PRINT STYLES
   =================================== */
@media print {
    .nav, .cursor, .cursor-dot, .cursor-glow,
    .guide-toc, .reading-progress, .back-to-top,
    .guide-hero, .cheatsheet-hero, .blog-hero,
    .studylab-inner-hero,
    .guide-footer, .footer, .blog-newsletter, .guide-start-btn,
    .guide-next-section, .btn-primary {
        display: none !important;
    }

    body {
        background: white !important;
        color: #333 !important;
    }

    .cheatsheet-content {
        padding: 20px !important;
    }

    .cheat-card {
        break-inside: avoid;
        border: 1px solid #ddd !important;
        background: white !important;
    }

    .cheat-card-header {
        background: #f5f5f5 !important;
    }

    .glass-card {
        break-inside: avoid;
        border: 1px solid #ddd !important;
        background: white !important;
    }

    .math-block {
        background: #f5f5f5 !important;
        border-left-color: #333 !important;
    }
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 1024px) {
    .guide-content {
        padding: 0 30px 80px;
    }

    .guide-section {
        padding: 60px 0;
    }

    .glass-card {
        padding: 30px;
    }

    .section-number {
        font-size: 80px;
    }

    .lr-comparison {
        grid-template-columns: 1fr;
    }

    .blog-card,
    .blog-card.featured {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .guide-hero {
        padding: 120px 20px 60px;
    }

    .guide-hero-meta {
        gap: 10px;
    }

    .meta-item {
        font-size: 12px;
        padding: 6px 12px;
    }

    .guide-content {
        padding: 0 20px 60px;
    }

    .guide-section {
        padding: 40px 0;
    }

    .glass-card {
        padding: 20px;
    }

    .section-number {
        font-size: 60px;
        top: 20px;
    }

    .interactive-container {
        padding: 15px;
    }

    .slider-controls {
        flex-direction: column;
    }

    .slider-group {
        min-width: 100%;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .concept-step {
        flex-direction: column;
        gap: 12px;
    }

    .neural-network-diagram {
        flex-direction: column;
        gap: 15px;
        padding: 20px;
    }

    .cheatsheet-grid {
        grid-template-columns: 1fr;
    }

    .blog-card,
    .blog-card.featured {
        grid-template-columns: 1fr;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .playground-controls {
        flex-direction: column;
    }

    .model-info {
        flex-direction: column;
        gap: 8px;
    }

    .threejs-container {
        height: 300px;
    }

    .threejs-container.large {
        height: 350px;
    }

    .guide-next-section {
        padding: 60px 20px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .pros-cons-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .guide-hero-title {
        font-size: 2.5rem;
    }

    .guide-section-title {
        font-size: 1.8rem;
    }

    .properties-grid {
        grid-template-columns: 1fr;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .interview-grid {
        grid-template-columns: 1fr;
    }
}


/* ============================================================
   STUDY LAB LANDING PAGE STYLES
   ============================================================ */

/* --- HERO SECTION --- */
.studylab-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(0, 119, 182, 0.1) 0%, rgba(10, 22, 40, 1) 60%, rgba(5, 13, 24, 1) 100%);
}

.studylab-hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.studylab-hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 800px;
    padding: 0 30px;
}

.studylab-hero-badge {
    display: inline-block;
    padding: 8px 24px;
    border: 1px solid rgba(247, 167, 0, 0.5);
    background: rgba(247, 167, 0, 0.08);
    color: var(--accent-orange);
    font-family: 'Outfit', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.studylab-hero-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(4rem, 12vw, 10rem);
    line-height: 0.95;
    letter-spacing: -2px;
    color: #fff;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.studylab-gradient-text {
    background: linear-gradient(135deg, var(--secondary-blue), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.studylab-hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-gray);
    line-height: 1.8;
    max-width: 650px;
    margin: 0 auto 36px;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.studylab-hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

.studylab-hero-buttons .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-weight: 600;
    font-size: 15px;
}

.studylab-hero-buttons .btn-secondary {
    padding: 14px 32px;
    font-weight: 600;
    font-size: 15px;
}

/* Floating formulas */
.studylab-floating {
    position: absolute;
    z-index: 2;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: rgba(0, 180, 216, 0.5);
    background: rgba(0, 180, 216, 0.06);
    border: 1px solid rgba(0, 180, 216, 0.12);
    padding: 6px 14px;
    pointer-events: none;
    white-space: nowrap;
}

.studylab-float-1 { top: 12%; left: 8%; animation: floatCode 8s ease-in-out infinite; }
.studylab-float-2 { top: 22%; right: 6%; animation: floatCode 9s ease-in-out infinite 1s; }
.studylab-float-3 { bottom: 28%; left: 5%; animation: floatCode 7s ease-in-out infinite 2s; }
.studylab-float-4 { top: 35%; left: 3%; animation: floatCode 10s ease-in-out infinite 0.5s; }
.studylab-float-5 { bottom: 18%; right: 8%; animation: floatCode 8s ease-in-out infinite 3s; }
.studylab-float-6 { top: 8%; right: 18%; animation: floatCode 9s ease-in-out infinite 1.5s; }

/* Floating keywords */
.studylab-keyword {
    position: absolute;
    z-index: 2;
    font-family: 'Outfit', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: rgba(247, 167, 0, 0.45);
    text-transform: uppercase;
    letter-spacing: 2px;
    pointer-events: none;
}

.studylab-kw-1 { top: 6%; right: 30%; animation: floatKeyword 7s ease-in-out infinite 0.5s; }
.studylab-kw-2 { bottom: 10%; left: 18%; animation: floatKeyword 8s ease-in-out infinite 1.5s; }
.studylab-kw-3 { top: 45%; right: 3%; animation: floatKeyword 9s ease-in-out infinite 2.5s; }
.studylab-kw-4 { bottom: 35%; right: 15%; animation: floatKeyword 7.5s ease-in-out infinite 0s; }

/* Scroll indicator */
.studylab-scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: rgba(139, 156, 179, 0.5);
    font-size: 12px;
    font-family: 'Outfit', sans-serif;
    letter-spacing: 1px;
    text-transform: uppercase;
    animation: fadeInUp 0.8s ease 1s forwards;
    opacity: 0;
}

.studylab-scroll-indicator svg {
    animation: bounceDown 2s ease infinite;
}

/* --- QUICK STATS SECTION --- */
.studylab-stats {
    padding: 80px 40px;
    background: rgba(0, 119, 182, 0.03);
}

.studylab-stats-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.studylab-stat-card {
    text-align: center;
    padding: 36px 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(0, 180, 216, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.studylab-stat-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 180, 216, 0.3);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.studylab-stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    color: var(--secondary-blue);
}

.studylab-stat-icon svg {
    width: 100%;
    height: 100%;
}

.studylab-stat-number {
    display: block;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 48px;
    color: #fff;
    line-height: 1;
    margin-bottom: 4px;
}

.studylab-stat-label {
    font-size: 14px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* --- SECTION HEADERS --- */
.studylab-section-header {
    text-align: center;
    margin-bottom: 50px;
}

.studylab-section-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: #fff;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.studylab-section-subtitle {
    font-size: clamp(0.95rem, 1.5vw, 1.15rem);
    color: var(--text-gray);
    max-width: 550px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --- HUB CARDS SECTION --- */
.studylab-hubs {
    padding: 100px 40px;
}

.studylab-hubs-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.studylab-hub-card {
    display: flex;
    flex-direction: column;
    padding: 40px 30px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(0, 180, 216, 0.12);
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.studylab-hub-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-orange));
    transform: scaleX(0);
    transition: transform 0.4s ease;
    transform-origin: left;
}

.studylab-hub-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 180, 216, 0.35);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.studylab-hub-card:hover::before {
    transform: scaleX(1);
}

.studylab-hub-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.studylab-hub-icon svg {
    width: 32px;
    height: 32px;
}

.studylab-hub-icon--guides {
    background: rgba(0, 180, 216, 0.12);
    border: 1px solid rgba(0, 180, 216, 0.25);
    color: var(--secondary-blue);
}

.studylab-hub-icon--sheets {
    background: rgba(247, 167, 0, 0.1);
    border: 1px solid rgba(247, 167, 0, 0.25);
    color: var(--accent-orange);
}

.studylab-hub-icon--blog {
    background: rgba(78, 205, 196, 0.1);
    border: 1px solid rgba(78, 205, 196, 0.25);
    color: #4ecdc4;
}

.studylab-hub-card h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 28px;
    color: #fff;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.studylab-hub-card p {
    color: var(--text-gray);
    line-height: 1.7;
    font-size: 15px;
    flex: 1;
    margin-bottom: 20px;
}

.studylab-hub-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.studylab-hub-meta span {
    font-size: 12px;
    color: var(--text-gray);
    background: rgba(255, 255, 255, 0.04);
    padding: 5px 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.studylab-hub-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-orange);
    font-weight: 600;
    font-size: 14px;
    transition: gap 0.3s ease;
}

.studylab-hub-card:hover .studylab-hub-cta {
    gap: 10px;
}

/* --- TOPICS SECTION --- */
.studylab-topics {
    padding: 100px 40px;
    background: rgba(0, 119, 182, 0.03);
}

.studylab-topics-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.studylab-topic-card {
    padding: 32px 24px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(0, 180, 216, 0.1);
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.studylab-topic-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 180, 216, 0.3);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.studylab-topic-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    color: var(--secondary-blue);
}

.studylab-topic-icon svg {
    width: 100%;
    height: 100%;
}

.studylab-topic-card h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.studylab-topic-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 20px;
}

.studylab-topic-links {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

.studylab-topic-links a {
    font-size: 12px;
    font-weight: 600;
    color: var(--secondary-blue);
    padding: 6px 14px;
    border: 1px solid rgba(0, 180, 216, 0.25);
    text-decoration: none;
    transition: all 0.3s ease;
}

.studylab-topic-links a:hover {
    background: rgba(0, 180, 216, 0.15);
    border-color: var(--secondary-blue);
    color: #fff;
}

/* --- FEATURES SECTION --- */
.studylab-features {
    padding: 100px 40px;
}

.studylab-features-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.studylab-feature-card {
    padding: 32px 24px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.studylab-feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(247, 167, 0, 0.3);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.studylab-feature-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    color: var(--accent-orange);
}

.studylab-feature-icon svg {
    width: 100%;
    height: 100%;
}

.studylab-feature-card h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.studylab-feature-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
    .studylab-hubs-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
    }

    .studylab-topics-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .studylab-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .studylab-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .studylab-hero {
        min-height: 100vh;
        padding: 120px 20px 60px;
    }

    .studylab-floating,
    .studylab-keyword {
        display: none;
    }

    .studylab-stats {
        padding: 60px 20px;
    }

    .studylab-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .studylab-hubs {
        padding: 60px 20px;
    }

    .studylab-topics {
        padding: 60px 20px;
    }

    .studylab-topics-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .studylab-features {
        padding: 60px 20px;
    }

    .studylab-features-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .studylab-scroll-indicator {
        display: none;
    }
}


/* ===================================
   SHARED INNER PAGE HERO
   Neural network canvas + floating elements
   for all Study Lab inner pages
   =================================== */

.studylab-inner-hero {
    position: relative;
    min-height: 550px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 120px 40px 60px;
    background: linear-gradient(180deg, rgba(0, 119, 182, 0.1) 0%, rgba(10, 22, 40, 1) 60%, rgba(5, 13, 24, 1) 100%);
    text-align: center;
}

/* Canvas sits behind content */
.studylab-inner-hero .studylab-hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Content sits above canvas */
.studylab-inner-hero .guide-hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 900px;
    padding: 0 30px;
}

/* Floating elements at z-index 2 */
.studylab-inner-hero .studylab-floating {
    z-index: 2;
}

.studylab-inner-hero .studylab-keyword {
    z-index: 2;
}

/* --- Height Variants --- */

.studylab-inner-hero--hub {
    min-height: 520px;
    padding: 150px 40px 60px;
}

.studylab-inner-hero--guide {
    min-height: 600px;
}

.studylab-inner-hero--content {
    min-height: 500px;
}

/* --- Override old hero class conflicts --- */

.studylab-inner-hero.guide-hero {
    min-height: 600px;
    padding: 120px 40px 60px;
}

.studylab-inner-hero.guides-hero,
.studylab-inner-hero.cheatsheet-hero,
.studylab-inner-hero.blog-hero,
.studylab-inner-hero.blog-post-hero {
    background: none;
}

/* --- Inner page floating positions (fewer items for shorter hero) --- */

.studylab-inner-hero .studylab-float-1 {
    top: 12%;
    left: 5%;
    animation-delay: 0.5s;
}

.studylab-inner-hero .studylab-float-2 {
    top: 18%;
    right: 4%;
    left: auto;
    animation-delay: 1.5s;
}

.studylab-inner-hero .studylab-float-3 {
    bottom: 18%;
    left: 3%;
    top: auto;
    animation-delay: 2.5s;
}

.studylab-inner-hero .studylab-kw-1 {
    top: 10%;
    right: 18%;
    left: auto;
    animation-delay: 0.8s;
}

.studylab-inner-hero .studylab-kw-2 {
    bottom: 22%;
    left: 12%;
    top: auto;
    right: auto;
    animation-delay: 2s;
}

/* --- Staggered fadeInUp animations for inner hero elements --- */

.studylab-inner-hero .guide-breadcrumb {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.studylab-inner-hero .guide-hero-badge {
    animation: fadeInUp 0.8s ease 0.15s forwards;
    opacity: 0;
}

.studylab-inner-hero .guide-hero-title {
    animation: fadeInUp 0.8s ease 0.3s forwards;
    opacity: 0;
}

.studylab-inner-hero .guide-hero-subtitle {
    animation: fadeInUp 0.8s ease 0.45s forwards;
    opacity: 0;
}

.studylab-inner-hero .guide-hero-meta {
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

.studylab-inner-hero .guide-start-btn {
    animation: fadeInUp 0.8s ease 0.75s forwards;
    opacity: 0;
}

/* Blog post specific staggered animations */
.studylab-inner-hero .blog-post-meta {
    animation: fadeInUp 0.8s ease 0.15s forwards;
    opacity: 0;
}

.studylab-inner-hero .blog-post-title {
    animation: fadeInUp 0.8s ease 0.3s forwards;
    opacity: 0;
}

.studylab-inner-hero .blog-post-excerpt {
    animation: fadeInUp 0.8s ease 0.45s forwards;
    opacity: 0;
}

/* Print button in cheatsheets */
.studylab-inner-hero .btn-primary {
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

/* --- Responsive --- */

@media (max-width: 1024px) {
    .studylab-inner-hero .studylab-float-2 {
        right: 2%;
    }
}

@media (max-width: 768px) {
    .studylab-inner-hero {
        min-height: auto;
        padding: 120px 20px 50px;
    }

    .studylab-inner-hero--hub,
    .studylab-inner-hero--guide,
    .studylab-inner-hero--content {
        min-height: auto;
    }

    .studylab-inner-hero.guide-hero {
        min-height: auto;
        padding: 120px 20px 50px;
    }

    .studylab-inner-hero .studylab-floating,
    .studylab-inner-hero .studylab-keyword {
        display: none;
    }

    .studylab-inner-hero .guide-hero-content {
        padding: 0 10px;
    }
}