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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1a1a1a;
    color: #ffffff;
    overflow-x: hidden;
}

.presentation-container {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    display: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 2rem;
    align-items: center;
    justify-content: center;
}

.slide.active {
    display: flex;
}

.slide-content {
    max-width: 1200px;
    width: 100%;
    text-align: center;
    z-index: 2;
}

.slide-content h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.slide-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #ffffff;
}

.slide-content h4 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: #ffffff;
}

.slide-content p {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    color: #ffffff;
}

.highlight {
    background-color: rgba(255,255,255,0.2);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: bold;
}

/* Title Slide */
.title-slide {
    animation: fadeIn 1s ease-in;
}

.title-slide h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 3px 3px 6px rgba(0,0,0,0.5);
}

.title-slide h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.title-slide .authors {
    margin-top: 3rem;
    font-size: 1.1rem;
    opacity: 0.8;
}

/* Content Grids */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    margin-top: 2rem;
}

.text-content {
    text-align: left;
}

.text-content ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.text-content li {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.visual-content {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Diagrams */
.diagram-placeholder {
    background: rgba(255,255,255,0.1);
    border: 2px dashed rgba(255,255,255,0.3);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.simple-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.component {
    background: rgba(255,255,255,0.2);
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    min-width: 100px;
}

.arrow {
    font-size: 1.5rem;
    color: #ffffff;
}

/* Architecture Diagram */
.architecture-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.system-block {
    background: rgba(255,255,255,0.15);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    min-width: 200px;
    border: 2px solid rgba(255,255,255,0.3);
}

.system-block i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.caption {
    margin-top: 2rem;
    font-style: italic;
    opacity: 0.8;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.result-card {
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.2);
}

.result-card i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #4CAF50;
}

/* Advantages and Applications */
.advantages-grid, .applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.advantage, .application {
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.2);
}

.advantage i, .application i {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #2196F3;
}

/* Challenges */
.challenges-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.challenge {
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.2);
}

.challenge i {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #FF9800;
}

/* Conclusion */
.conclusion-content ul {
    text-align: left;
    display: inline-block;
    margin: 2rem 0;
}

.conclusion-content li {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.quote {
    margin: 2rem 0;
    padding: 1.5rem;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    border-left: 4px solid #4CAF50;
}

.quote blockquote {
    font-style: italic;
    font-size: 1.3rem;
}

/* Thank You Slide */
.thank-you-slide {
    animation: fadeIn 1s ease-in;
}

.thank-you-slide h2 {
    font-size: 3rem;
    margin: 2rem 0;
}

.thank-you-slide i {
    color: #FF4081;
    margin-bottom: 2rem;
}

.contact-info {
    margin-top: 3rem;
    opacity: 0.9;
}

.contact-info p {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

/* Navigation */
.slide-nav {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
}

.nav-btn {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

/* Presentation Controls */
.presentation-controls {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 2rem;
    background: rgba(0,0,0,0.8);
    padding: 1rem 2rem;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.presentation-controls button {
    background: rgba(255,255,255,0.2);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.presentation-controls button:hover {
    background: rgba(255,255,255,0.3);
    transform: scale(1.1);
}

.slide-indicator {
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .slide {
        padding: 1rem;
    }

    .slide-content h2 {
        font-size: 2rem;
    }

    .title-slide h1 {
        font-size: 2.5rem;
    }

    .content-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .architecture-diagram {
        flex-direction: column;
        gap: 1rem;
    }

    .results-grid,
    .advantages-grid,
    .applications-grid,
    .challenges-list {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .system-block {
        min-width: auto;
        padding: 1.5rem;
    }

    .result-card,
    .advantage,
    .application,
    .challenge {
        padding: 1rem;
    }

    .slide-nav {
        bottom: 1rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .nav-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .presentation-controls {
        padding: 0.8rem 1.5rem;
        gap: 1rem;
    }

    .diagram-placeholder {
        padding: 1rem;
        min-height: 150px;
    }
}

@media (max-width: 480px) {
    .slide-content h2 {
        font-size: 1.8rem;
    }

    .title-slide h1 {
        font-size: 2rem;
    }

    .slide-content p {
        font-size: 1rem;
    }

    .simple-diagram {
        flex-direction: column;
        gap: 0.5rem;
    }

    .component {
        min-width: auto;
        padding: 0.8rem;
    }
}