body { 
    font-family: 'Inter', sans-serif; 
    overflow: hidden; 
    background-color: #f8f9fa;
}

#presentation-container { 
    position: relative; 
    width: 100vw; 
    height: 100vh; 
}

.presentation-slide {
    position: absolute !important; 
    inset: 0 !important; 
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), visibility 0.8s !important;
    display: flex; 
    flex-direction: column; 
    justify-content: center; 
    align-items: center; 
    padding: 5vw; 
    overflow: hidden; 
    box-sizing: border-box;
    opacity: 0; 
    visibility: hidden; 
    pointer-events: none; 
    z-index: 1;
}

.presentation-slide:first-child {
    opacity: 1; 
    visibility: visible; 
    pointer-events: auto; 
    z-index: 2;
}

.presentation-slide.layout-fullscreen { padding: 0; }
.presentation-slide.layout-minimal { padding: 2vw; }
.presentation-slide.layout-spacious { padding: 8vw; }
.presentation-slide.layout-asymmetric { padding: 2vw 8vw 8vw 2vw; }
.presentation-slide.layout-corner { justify-content: flex-start; align-items: flex-start; }
.presentation-slide.layout-edge-right { justify-content: center; align-items: flex-end; }
.presentation-slide.layout-diagonal { transform: rotate(5deg); }
.presentation-slide.layout-split { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.presentation-slide.layout-thirds { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
.presentation-slide.layout-overlay { display: block; position: relative; }
.presentation-slide.layout-floating { perspective: 1000px; }
.presentation-slide.layout-stack { display: flex; flex-direction: column; gap: 1rem; }
.presentation-slide.layout-scatter { display: block; } 
.presentation-slide.layout-scatter > * { position: absolute; }

@media (max-width: 768px) {
    .presentation-slide.layout-split, .presentation-slide.layout-thirds { 
        grid-template-columns: 1fr; 
    }
    .presentation-slide {
        padding: 8vw 5vw;
    }
}

.gradient-bg-1 {
    background: linear-gradient(135deg, #e0f7fa 0%, #d1e6f7 100%);
}

.gradient-bg-2 {
    background: linear-gradient(135deg, #f0f9ff 0%, #e6f2ff 100%);
}

.gradient-bg-dark {
    background: linear-gradient(135deg, #0b233d 0%, #031323 100%);
}

.feature-card {
    background-color: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.roadmap-step {
    position: relative;
    padding-left: 2rem;
}

.roadmap-step::before {
    content: '';
    position: absolute;
    left: 0.375rem;
    top: 0.375rem;
    width: 1rem;
    height: 1rem;
    background-color: #3498db;
    border-radius: 50%;
    border: 3px solid #e0f7fa;
    z-index: 1;
}

.roadmap-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 0.8125rem;
    top: 1.375rem;
    width: 2px;
    height: calc(100% + 2rem);
    background-color: #a8d5ef;
}