/* ========================================
   CSS VARIABLES & DESIGN SYSTEM
   ======================================== */
:root {
    /* Colors */
    --color-primary: #667eea;
    --color-secondary: #764ba2;
    --color-accent-1: #f093fb;
    --color-accent-2: #f5576c;
    --color-accent-3: #4facfe;
    --color-accent-4: #00f2fe;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #e5e7eb;
    --color-text-muted: #9ca3af;

    /* Background */
    --bg-dark: #0f172a;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.3);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-dark);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow: hidden;
    position: relative;
    min-height: 100vh;
}

/* Animated Background Gradient */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
            #667eea 0%,
            #764ba2 25%,
            #f093fb 50%,
            #f5576c 75%,
            #4facfe 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    opacity: 0.15;
    z-index: -1;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* ========================================
   PROGRESS BAR
   ======================================== */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 1000;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent-1));
    width: 0%;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

/* ========================================
   SLIDE CONTAINER
   ======================================== */
.slide-container {
    width: 100%;
    height: 100vh;
    position: relative;
    overflow: hidden;
}

/* ========================================
   SLIDE STYLES
   ======================================== */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-2xl);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease, visibility 0.6s;
    will-change: transform, opacity;
    z-index: 1;
}

/* Intelligent Centering: These push content to the center if it fits,
   but allow top-alignment if it's taller than the viewport */
.slide::before,
.slide::after {
    content: '';
    flex: 1;
    min-height: 1px;
    /* Ensure they have a footprint */
}

/* Custom Scrollbar for Glassmorphism */
.slide::-webkit-scrollbar {
    width: 6px;
}

.slide::-webkit-scrollbar-track {
    background: transparent;
}

.slide::-webkit-scrollbar-thumb {
    background-color: var(--color-primary);
    border-radius: 20px;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    z-index: 10;
}

.slide-content {
    padding-bottom: var(--spacing-2xl);
    max-width: 1200px;
    width: 100%;
    animation: slideIn 0.8s ease forwards;
    flex-shrink: 0;
    /* Prevent the content itself from shrinking */
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-1));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

h2 {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

h3 {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

p {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    text-align: center;
}

.subtitle {
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    text-align: center;
    margin-top: -var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-accent-2), var(--color-accent-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    font-weight: 600;
    color: var(--color-accent-1);
}

.center {
    text-align: center;
}

.definition {
    font-size: clamp(1.3rem, 2.5vw, 2rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.code-text {
    font-family: 'Courier New', monospace;
    background: rgba(102, 126, 234, 0.2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--color-primary);
    margin: var(--spacing-sm) 0;
    font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.slide-hint {
    font-size: clamp(0.9rem, 1.3vw, 1.1rem);
    color: var(--color-text-muted);
    font-style: italic;
    text-align: center;
    margin: var(--spacing-sm) 0;
}

code {
    font-family: 'Courier New', monospace;
    background: rgba(102, 126, 234, 0.2);
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    color: var(--color-accent-3);
    font-size: 0.9em;
    word-break: break-word;
    overflow-wrap: break-word;
}

strong {
    color: var(--color-primary);
    font-weight: 700;
}

em {
    color: var(--color-accent-1);
    font-style: italic;
}

/* ========================================
   CONTENT CARDS & CONTAINERS
   ======================================== */
.content-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.content-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   LISTS
   ======================================== */
ul {
    list-style: none;
}

.big-list {
    font-size: clamp(1.1rem, 1.8vw, 1.4rem);
}

.big-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--color-text-secondary);
}

.big-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.big-list ul {
    margin-left: var(--spacing-lg);
    margin-top: var(--spacing-sm);
}

.big-list ul li {
    font-size: clamp(1rem, 1.4vw, 1.15rem);
    padding: 0.35rem 0 0.35rem var(--spacing-md);
}

.big-list ul li::before {
    content: '•';
}

.chipset-list li {
    padding: var(--spacing-xs) 0;
}

/* ========================================
   DAY 3 CONTENT UTILITIES
   ======================================== */
.highlight-text {
    font-size: clamp(1.1rem, 1.8vw, 1.4rem);
    color: var(--color-accent-3);
    font-weight: 600;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
}

.comparison-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
}

.comparison-item {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.comparison-item h3,
.comparison-item h4,
.comparison-item h5 {
    margin-bottom: var(--spacing-sm);
}

.comparison-item ul {
    margin-left: var(--spacing-sm);
}

.checklist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
}

.checklist-item {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.step-icon {
    font-size: 1.4rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.workflow-step.success {
    border-color: var(--color-success);
    box-shadow: 0 0 0 1px rgba(16, 185, 129, 0.2);
}

.slide-nav {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
}

.slide-number {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-text-primary);
    font-family: var(--font-display);
    font-weight: 600;
}

/* ========================================
   AGENDA GRID (Slide 1)
   ======================================== */
.agenda-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.agenda-item {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
}

.agenda-item:hover {
    background: var(--bg-card-hover);
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-glow);
    border-color: var(--color-primary);
}

.goal-text {
    text-align: center;
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    margin-top: var(--spacing-xl);
    color: var(--color-text-secondary);
}

/* ========================================
   CALLOUT BOXES
   ======================================== */
.callout {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) 0;
    border-left: 4px solid;
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    backdrop-filter: blur(10px);
}

.callout.warning {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--color-danger);
    color: var(--color-text-primary);
}

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

.callout.question {
    background: rgba(79, 172, 254, 0.1);
    border-color: var(--color-accent-3);
    color: var(--color-text-primary);
}

/* ========================================
   WORKFLOW
   ======================================== */
.workflow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.workflow.vertical {
    flex-direction: column;
    align-items: stretch;
}

.workflow.vertical .workflow-arrow {
    transform: rotate(90deg);
    margin: 0;
}

.workflow-step {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    min-width: 150px;
    text-align: center;
    transition: all var(--transition-base);
}

.workflow-step:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.step-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    font-family: var(--font-display);
}

.step-text {
    font-size: clamp(0.9rem, 1.2vw, 1.1rem);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

.workflow-arrow {
    font-size: 2rem;
    color: var(--color-primary);
}

/* ========================================
   COMPARISON GRIDS
   ======================================== */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.comparison-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.comparison-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent-1));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

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

.comparison-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.comparison-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: clamp(1.2rem, 2vw, 1.6rem);
}

.comparison-card p {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    color: var(--color-text-muted);
}

.comparison-card ul {
    margin-top: var(--spacing-sm);
}

.comparison-card ul li {
    padding: 0.45rem 0 0.45rem var(--spacing-md);
    position: relative;
    color: var(--color-text-secondary);
    text-align: left;
}

.comparison-card ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.highlight-card {
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.slow {
    border-left: 4px solid var(--color-danger);
}

.medium {
    border-left: 4px solid var(--color-warning);
}

.fast {
    border-left: 4px solid var(--color-success);
}

/* ========================================
   VS CONTAINER
   ======================================== */
.vs-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin: var(--spacing-xl) 0;
}

.vs-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.vs-card:hover {
    background: var(--bg-card-hover);
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.vs-card h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: clamp(1.5rem, 2.5vw, 2rem);
}

.vs-card ul {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.vs-card ul li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--color-text-secondary);
}

.vs-card ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.5em;
}

.vs-card ul ul {
    margin-top: var(--spacing-xs);
    margin-left: var(--spacing-sm);
}

.vs-card ul ul li {
    font-size: clamp(0.95rem, 1.3vw, 1.1rem);
    padding: 0.35rem 0;
}

.vs-divider {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--color-primary);
    font-family: var(--font-display);
}

.vs-card.intel {
    border-left: 4px solid #0071c5;
}

.vs-card.amd {
    border-left: 4px solid #ed1c24;
}

.vs-card.needed {
    border-left: 4px solid var(--color-success);
}

.vs-card.not-needed {
    border-left: 4px solid var(--color-danger);
}

/* ========================================
   EXAMPLE & NAMING BOXES
   ======================================== */
.example-box {
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.example-box h3 {
    margin-bottom: var(--spacing-md);
}

.naming-breakdown {
    padding: var(--spacing-md) 0;
}

.naming-breakdown p {
    padding: var(--spacing-sm) 0;
    font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.channel-comparison p {
    padding: var(--spacing-sm) 0;
    font-size: clamp(1.1rem, 1.8vw, 1.3rem);
}

/* ========================================
   SPEED BARS (for storage comparison)
   ======================================== */
.speed-bars {
    margin: var(--spacing-xl) 0;
}

.speed-bar-row {
    display: flex;
    align-items: center;
    margin: var(--spacing-lg) 0;
    gap: var(--spacing-lg);
}

.speed-label {
    min-width: 120px;
    font-size: clamp(1.1rem, 1.8vw, 1.3rem);
    font-weight: 600;
    color: var(--color-text-primary);
}

.speed-bar-container {
    flex: 1;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    height: 50px;
    position: relative;
    overflow: hidden;
}

.speed-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent-1));
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: var(--spacing-md);
    font-size: clamp(0.9rem, 1.2vw, 1.1rem);
    font-weight: 600;
    color: white;
    border-radius: var(--radius-md);
    transition: width 1s ease;
    animation: barGrow 1s ease forwards;
}

@keyframes barGrow {
    from {
        width: 0%;
    }
}

/* ========================================
   MINDSET & OUTCOME GRIDS
   ======================================== */
.mindset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.mindset-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
}

.mindset-card:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.mindset-card h3 {
    margin: 0;
    font-size: clamp(1.3rem, 2vw, 1.8rem);
}

.mindset-card p {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    color: var(--color-primary);
    margin: 0;
    font-weight: 800;
}

.quote-box {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(240, 147, 251, 0.2));
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    font-size: clamp(1.3rem, 2.5vw, 2rem);
    font-weight: 600;
    text-align: center;
    font-style: italic;
    color: var(--color-text-primary);
}

.outcome-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.outcome-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.outcome-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.outcome-icon {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.outcome-card p {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.final-message {
    text-align: center;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    margin-top: var(--spacing-2xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-1));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   NAVIGATION BUTTONS
   ======================================== */
.nav-btn {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    z-index: 100;
    color: var(--color-primary);
}

.nav-btn:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: var(--shadow-glow);
}

.nav-btn:active {
    transform: translateY(-50%) scale(0.95);
}

.prev-btn {
    left: var(--spacing-lg);
}

.next-btn {
    right: var(--spacing-lg);
}

/* ========================================
   SLIDE COUNTER
   ======================================== */
.slide-counter {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-display);
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    font-weight: 600;
    color: var(--color-text-primary);
    z-index: 100;
    box-shadow: var(--shadow-md);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 768px) {
    .slide {
        padding: var(--spacing-lg);
    }

    .vs-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .vs-divider {
        display: none;
    }

    .workflow {
        flex-direction: column;
    }

    .workflow-arrow {
        transform: rotate(90deg);
    }

    .nav-btn {
        width: 50px;
        height: 50px;
    }

    .prev-btn {
        left: var(--spacing-sm);
    }

    .next-btn {
        right: var(--spacing-sm);
    }

    .slide-counter {
        bottom: var(--spacing-sm);
        padding: var(--spacing-xs) var(--spacing-md);
    }

    .content-card {
        padding: var(--spacing-md);
    }

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

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

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .slide {
        padding: var(--spacing-md);
    }

    h1 {
        margin-bottom: var(--spacing-md);
    }

    .speed-bar-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .speed-label {
        min-width: auto;
    }

    .speed-bar-container {
        width: 100%;
    }
}

/* ========================================
   ANIMATIONS & EFFECTS
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

/* Hover effects for interactive elements */
.agenda-item,
.comparison-card,
.workflow-step,
.outcome-card {
    animation: fadeIn 0.5s ease forwards;
}

/* Delay animations for staggered effect */
.agenda-item:nth-child(1) {
    animation-delay: 0.1s;
}

.agenda-item:nth-child(2) {
    animation-delay: 0.15s;
}

.agenda-item:nth-child(3) {
    animation-delay: 0.2s;
}

.agenda-item:nth-child(4) {
    animation-delay: 0.25s;
}

.agenda-item:nth-child(5) {
    animation-delay: 0.3s;
}

.agenda-item:nth-child(6) {
    animation-delay: 0.35s;
}

.agenda-item:nth-child(7) {
    animation-delay: 0.4s;
}

.agenda-item:nth-child(8) {
    animation-delay: 0.45s;
}

.agenda-item:nth-child(9) {
    animation-delay: 0.5s;
}

.agenda-item:nth-child(10) {
    animation-delay: 0.55s;
}

.agenda-item:nth-child(11) {
    animation-delay: 0.6s;
}

.agenda-item:nth-child(12) {
    animation-delay: 0.65s;
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {

    .progress-bar,
    .nav-btn,
    .slide-counter {
        display: none;
    }

    body::before {
        display: none;
    }

    .slide {
        page-break-after: always;
        position: relative;
        opacity: 1;
        visibility: visible;
        transform: none;
    }
}


/* Home Button */
.home-btn {
    position: fixed;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    z-index: 100;
    color: var(--color-primary);
}

.home-btn:hover {
    background: var(--color-primary);
    color: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.home-btn:active {
    transform: scale(0.95);
}

@media (max-width: 768px) {
    .home-btn {
        top: var(--spacing-md);
        left: var(--spacing-md);
        width: 50px;
        height: 50px;
    }
}

/* ========================================
   QUIZ STYLES
   ======================================== */
.quiz-slide {
    text-align: center;
}

.quiz-slide .slide-content {
    margin: auto;
    padding-bottom: var(--spacing-2xl);
    max-width: 900px;
}

.quiz-slide h2 {
    color: var(--color-accent-1);
    margin-bottom: var(--spacing-xl);
}

.quiz-question {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-primary);
    line-height: 1.3;
}

.quiz-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
}

.quiz-option {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.quiz-option:hover {
    background: var(--bg-card-hover);
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
    cursor: pointer;
}

.reveal-btn {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-1));
    border: none;
    border-radius: var(--radius-md);
    color: white;
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    font-family: var(--font-display);
    margin: var(--spacing-lg) 0;
}

.reveal-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.reveal-btn:disabled {
    background: var(--bg-card) !important;
    color: var(--color-text-muted) !important;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    opacity: 0.7;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.quiz-reveal {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    animation: quizSlideDown 0.5s ease forwards;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    text-align: left;
}

.quiz-reveal.hidden {
    display: none;
}

.quiz-answer {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-success);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.quiz-explanation {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    border-left: 3px solid var(--color-success);
    padding-left: var(--spacing-md);
}

@keyframes quizSlideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   SLIDE NAVIGATOR STYLES
   ======================================== */
.nav-menu-btn {
    position: fixed;
    bottom: calc(var(--spacing-md) + 70px);
    right: var(--spacing-md);
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    z-index: 900;
}

.nav-menu-btn:hover {
    background: var(--bg-card-hover);
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.3s ease forwards;
    overflow-y: auto;
}

.nav-overlay.hidden {
    display: none;
}

.nav-overlay-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-overlay-header h2 {
    margin: 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-1));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-close-btn {
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 3rem;
    cursor: pointer;
    transition: all var(--transition-base);
    line-height: 1;
    padding: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-close-btn:hover {
    color: var(--color-accent-2);
    transform: rotate(90deg);
}

.nav-overlay-content {
    flex: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.nav-item {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: left;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
}

.nav-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(240, 147, 251, 0.2));
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.4);
}

.nav-item-number {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.nav-item.active .nav-item-number {
    color: var(--color-primary);
}

.nav-item-title {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

.nav-item.active .nav-item-title {
    color: var(--color-text-primary);
    font-weight: 600;
}

/* ========================================
   HELP OVERLAY STYLES
   ======================================== */
.help-btn {
    position: fixed;
    top: calc(var(--spacing-md) + 70px);
    right: var(--spacing-md);
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    z-index: 900;
}

.help-btn:hover {
    background: var(--bg-card-hover);
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.help-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.3s ease forwards;
    overflow-y: auto;
}

.help-overlay.hidden {
    display: none;
}

.help-overlay-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.help-overlay-header h2 {
    margin: 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent-1));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.help-close-btn {
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 3rem;
    cursor: pointer;
    transition: all var(--transition-base);
    line-height: 1;
    padding: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.help-close-btn:hover {
    color: var(--color-accent-2);
    transform: rotate(90deg);
}

.help-overlay-content {
    flex: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.help-section {
    margin-bottom: var(--spacing-2xl);
}

.help-section h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.help-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.help-item kbd {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3), rgba(240, 147, 251, 0.3));
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.3rem;
    padding: 0.4rem 0.8rem;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    min-width: 40px;
    text-align: center;
    display: inline-block;
}

.help-item span {
    flex: 1;
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

/* ========================================
   SLIDE HINT STYLES
   ======================================== */
.slide-hint {
    text-align: center;
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-lg);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.slide-hint kbd {
    background: rgba(102, 126, 234, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.25rem;
    padding: 0.2rem 0.5rem;
    font-family: var(--font-primary);
    font-size: 0.9em;
    font-weight: 600;
    color: var(--color-primary);
}

/* ========================================
   IMPROVED MOBILE RESPONSIVENESS
   ======================================== */
@media (max-width: 768px) {
    .nav-menu-btn {
        bottom: calc(var(--spacing-sm) + 60px);
        right: var(--spacing-sm);
        width: 45px;
        height: 45px;
    }

    .help-btn {
        top: calc(var(--spacing-sm) + 60px);
        right: var(--spacing-sm);
        width: 45px;
        height: 45px;
    }

    .nav-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-sm);
    }

    .nav-overlay-header,
    .nav-overlay-content,
    .help-overlay-content {
        padding: var(--spacing-md);
    }

    .help-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .help-item kbd {
        margin-right: var(--spacing-xs);
    }

    .slide-hint {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .nav-grid {
        grid-template-columns: 1fr;
    }

    .nav-item {
        padding: var(--spacing-sm);
    }

    .help-section h3 {
        font-size: 1.2rem;
    }

    .help-item {
        padding: var(--spacing-sm);
    }

    .help-item span {
        font-size: 1rem;
    }
}

/* ========================================
   SMOOTH TRANSITIONS & ANIMATIONS
   ======================================== */
.slide {
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.slide:not(.active) {
    pointer-events: none;
}

/* Fade animation enhancement */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    body::before {
        display: none;
    }

    .progress-bar,
    .nav-btn,
    .slide-counter,
    .home-btn,
    .nav-menu-btn,
    .help-btn {
        display: none !important;
    }

    .slide {
        page-break-after: always;
        page-break-inside: avoid;
    }

    .slide:not(.active) {
        display: block !important;
        position: relative !important;
    }

    .slide-container {
        display: block;
    }

    body {
        overflow: visible;
    }
}

/* ========================================
   ACCESSIBILITY IMPROVEMENTS
   ======================================== */
.nav-btn:focus,
.home-btn:focus,
.nav-menu-btn:focus,
.help-btn:focus,
.reveal-btn:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
}

button:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
}

.agenda-item:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    transform: translateY(-5px) scale(1.02);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --bg-card: rgba(255, 255, 255, 0.15);
        --bg-card-hover: rgba(255, 255, 255, 0.25);
    }

    .content-card,
    .agenda-item,
    .quiz-option,
    .nav-item {
        border-width: 2px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    body::before {
        animation: none;
    }
}

/* ========================================
   PERFORMANCE OPTIMIZATIONS
   ======================================== */
.slide-container {
    will-change: auto;
}

.slide.active {
    will-change: opacity, transform;
}

.progress-fill {
    will-change: width;
}

/* ========================================
   INTEL VS AMD ENHANCED STYLING
   ======================================== */

/* Section divider for better visual separation */
.content-card h2 {
    position: relative;
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid rgba(102, 126, 234, 0.3);
}

/* Intel brand colors */
.vs-card.intel h3 {
    color: #0071c5 !important;
}

/* AMD brand colors */
.vs-card.amd h3 {
    color: #ed1c24 !important;
}

/* Enhanced VS container for better mobile responsiveness */
@media (max-width: 768px) {
    .vs-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .vs-divider {
        transform: rotate(90deg);
    }
}

/* Better list styling within content cards */
.content-card ul:not(.big-list) li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.content-card ul:not(.big-list) li::before {
    content: '▸';
    position: absolute;
    left: var(--spacing-sm);
    color: var(--color-primary);
    font-weight: bold;
}

/* Enhanced comparison table styling */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: var(--spacing-lg) 0;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
}

table thead {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3), rgba(118, 75, 162, 0.3));
}

table thead th {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: 700;
    color: var(--color-text-primary);
    font-size: clamp(1.1rem, 1.8vw, 1.4rem);
}

table tbody tr {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background var(--transition-fast);
}

table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

table tbody tr:last-child {
    border-bottom: none;
}

table tbody td {
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: clamp(1rem, 1.5vw, 1.2rem);
}

table tbody td:first-child {
    color: var(--color-text-primary);
    font-weight: 600;
}

/* Better spacing for subsections */
.content-card h3:not(:first-child) {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
}

/* Ensure proper spacing between sections */
.content-card+.content-card {
    margin-top: var(--spacing-xl);
}

/* ============================
   BACK TO HOME BUTTON (Enhanced Design)
   ============================ */
.back-home-btn {
    position: fixed;
    top: 25px;
    left: 25px;
    z-index: 1000;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(15, 23, 42, 0.6);
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    font-family: var(--font-display);
    letter-spacing: 0.5px;
}

/* Icon styling */
.back-home-btn::before {
    content: '🏠';
    font-size: 1.2rem;
    filter: drop-shadow(0 0 2px rgba(255, 255, 255, 0.5));
    transition: transform 0.3s ease;
}

/* Hover effects */
.back-home-btn:hover {
    background: rgba(102, 126, 234, 0.2);
    border-color: var(--color-primary);
    transform: translateY(2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.25);
    color: #fff;
}

.back-home-btn:hover::before {
    transform: scale(1.2);
}

/* Active state */
.back-home-btn:active {
    transform: translateY(1px) scale(0.98);
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.2);
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .back-home-btn {
        top: 15px;
        left: 15px;
        padding: 10px 16px;
        font-size: 0.85rem;
    }
}