/* Presentation Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #10b981;
    --background-color: #111827;
    --text-color: #f3f4f6;
    --text-secondary: #9ca3af;
    --success-color: #10b981;
    --error-color: #ef4444;
    --border-color: #374151;
}

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

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

#presentation {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* Slide Styles */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    padding: 4rem;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    background-size: cover;
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide-content {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.slide-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.slide-bullets {
    list-style-type: none;
    margin-left: 1rem;
}

.slide-bullets li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 1rem;
    font-size: 1.25rem;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.slide-bullets li::before {
    content: "→";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    top: 0;
}

.slide-bullets li ul {
    margin-top: 0.5rem;
    margin-left: 1rem;
}

.slide-bullets li ul li {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.slide.active .slide-bullets li {
    opacity: 1;
    transform: translateY(0);
}

.slide.active .slide-bullets li:nth-child(1) { transition-delay: 0.1s; }
.slide.active .slide-bullets li:nth-child(2) { transition-delay: 0.2s; }
.slide.active .slide-bullets li:nth-child(3) { transition-delay: 0.3s; }
.slide.active .slide-bullets li:nth-child(4) { transition-delay: 0.4s; }
.slide.active .slide-bullets li:nth-child(5) { transition-delay: 0.5s; }

/* Navigation Controls */
#prev-btn, #next-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#prev-btn:hover, #next-btn:hover {
    background-color: var(--primary-dark);
}

/* Placeholder for diagrams/charts */
.architecture-diagram, .attention-comparison, .training-chart, .vlm-chart, .performance-chart {
    min-height: 150px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1rem;
    border: 1px dashed var(--border-color);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .slide {
        padding: 2rem;
    }
    
    .slide-title {
        font-size: 1.8rem;
    }
    
    .slide-bullets li {
        font-size: 1rem;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.slide-in-right {
    animation: slideInRight 0.5s ease forwards;
}

.slide-in-left {
    animation: slideInLeft 0.5s ease forwards;
}

.scale-in {
    animation: scaleIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInRight {
    from { transform: translateX(50px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideInLeft {
    from { transform: translateX(-50px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes scaleIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}