:root {
    --bg-color: #07090E;
    --card-bg: rgba(15, 22, 38, 0.7);
    --card-border: rgba(255, 255, 255, 0.06);
    --primary: #00E5FF;
    --primary-glow: rgba(0, 229, 255, 0.15);
    --secondary: #00E676;
    --secondary-glow: rgba(0, 230, 118, 0.15);
    --accent: #E040FB;
    --accent-glow: rgba(224, 64, 251, 0.15);
    --danger: #FF1744;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

h1, h2, h3, h4 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
}

/* Slide Container */
.presentation-container {
    width: 100vw;
    height: 100vh;
    position: relative;
}

/* Slide Styles */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 4rem 6rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    opacity: 0;
    transform: translateX(100px);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
    z-index: 1;
}

.slide.active {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
    z-index: 10;
}

.slide.prev {
    opacity: 0;
    transform: translateX(-100px);
}

/* Ambient Glow Backgrounds on Slides */
.ambient-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-glow) 0%, rgba(7,9,14,0) 70%);
    bottom: -200px;
    right: -100px;
    pointer-events: none;
    z-index: -1;
}

.ambient-glow-top {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(224, 64, 251, 0.08) 0%, rgba(7,9,14,0) 70%);
    top: -200px;
    left: -100px;
    pointer-events: none;
    z-index: -1;
}

/* Navigation Controls */
.controls {
    position: absolute;
    bottom: 2rem;
    right: 4rem;
    display: flex;
    gap: 1rem;
    z-index: 100;
}

.btn-ctrl {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
}

.btn-ctrl:hover {
    border-color: var(--primary);
    background: var(--primary-glow);
    color: var(--primary);
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.2);
}

.dots-indicator {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 100;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: var(--primary);
    transform: scale(1.3);
    box-shadow: 0 0 10px var(--primary);
}

/* Slide Typography */
.slide-header {
    margin-bottom: 2.5rem;
}

.slide-tag {
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    display: block;
    margin-bottom: 0.5rem;
}

.slide h2 {
    font-size: 2.75rem;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #FFF, var(--text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Header logo */
.slide-logo {
    position: absolute;
    top: 2rem;
    left: 6rem;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
}

.slide-logo-img {
    height: 35px;
    width: auto;
    object-fit: contain;
}

.slide-logo span {
    font-size: 0.65rem;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 2px 8px;
    border-radius: 99px;
    background: var(--primary-glow);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    letter-spacing: 0.05em;
}

/* Slide Content Components */
.slide-content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    height: 60%;
}

.slide-text-block p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.bullet-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.bullet-list li {
    position: relative;
    padding-left: 2rem;
    font-size: 1.05rem;
    color: var(--text-main);
}

.bullet-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--secondary);
    font-weight: 700;
    font-size: 1.1rem;
}

/* Cover Slide */
.cover-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.cover-content h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    background: linear-gradient(to right, #FFFFFF 10%, #E2E8F0 50%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cover-content p {
    font-size: 1.4rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

/* Silos Grid */
.silos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.silo-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2rem;
    border-radius: 12px;
    border-top: 3px solid var(--danger);
}

.silo-card h3 {
    font-size: 1.25rem;
    color: var(--text-main);
    margin-bottom: 0.75rem;
}

.silo-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Interactive Architecture Grid (Slide 4) */
.interactive-modules {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.module-box {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.module-box:hover {
    border-color: var(--primary);
    box-shadow: 0 0 15px var(--primary-glow);
    transform: translateY(-2px);
}

.module-box h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.module-box h3::after {
    content: "→";
    font-size: 1rem;
    color: var(--primary);
    opacity: 0.5;
    transition: opacity 0.3s;
}

.module-box:hover h3::after {
    opacity: 1;
}

.module-box p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Module Drawer Popup */
.drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 450px;
    height: 100vh;
    background: rgba(10, 15, 28, 0.95);
    backdrop-filter: blur(15px);
    border-left: 1px solid var(--card-border);
    z-index: 1000;
    padding: 4rem 3rem;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.drawer.open {
    transform: translateX(0);
}

.drawer-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.3s;
}

.drawer-close:hover {
    color: var(--primary);
}

.drawer h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.drawer h3 {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-weight: 500;
}

.dept-list {
    list-style: none;
    overflow-y: auto;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-right: 10px;
}

.dept-list::-webkit-scrollbar {
    width: 4px;
}

.dept-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 99px;
}

.dept-list li {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
}

/* Use Cases Slide (Slide 5) */
.use-cases-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.use-case-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.use-case-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-glow);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.use-case-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.use-case-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Slide 6 Roadmap */
.roadmap-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    position: relative;
    margin-top: 2rem;
}

.roadmap-timeline::before {
    content: "";
    position: absolute;
    top: 24px;
    left: 0;
    width: 100%;
    height: 2px;
    background: rgba(255, 255, 255, 0.05);
    z-index: 1;
}

.roadmap-step {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.roadmap-dot {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-color);
    border: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: 700;
    box-shadow: 0 0 15px var(--primary-glow);
}

.roadmap-step.active .roadmap-dot {
    border-color: var(--secondary);
    color: var(--secondary);
    box-shadow: 0 0 15px var(--secondary-glow);
}

.roadmap-step h3 {
    font-size: 1.15rem;
    color: var(--text-main);
}

.roadmap-step p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Keyboard Info */
.keyboard-hint {
    position: absolute;
    bottom: 2.25rem;
    left: 4rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.key-btn {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Responsive */
@media (max-width: 1024px) {
    .slide {
        padding: 4rem 3rem;
    }
    .slide-content-grid, .silos-grid, .interactive-modules, .use-cases-grid, .roadmap-timeline {
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    body {
        overflow-y: auto;
    }
    
    .presentation-container {
        height: auto;
        min-height: 100vh;
    }
    
    .slide {
        position: relative;
        height: auto;
        min-height: 100vh;
        padding: 6rem 1.5rem 8rem 1.5rem;
        transform: none !important;
        opacity: 1 !important;
        display: none;
    }
    
    .slide.active {
        display: flex;
        opacity: 1 !important;
        transform: none !important;
    }
    
    .slide-logo {
        top: 1rem;
        left: 1.5rem;
    }
    
    .slide-logo-img {
        height: 24px;
    }
    
    .ambient-glow, .ambient-glow-top {
        display: none;
    }
    
    .cover-content h1 {
        font-size: 2.5rem;
    }
    
    .slide h2 {
        font-size: 2rem;
    }
    
    .slide-content-grid {
        grid-template-columns: 1fr;
    }
    
    .silos-grid, .interactive-modules, .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .roadmap-timeline {
        grid-template-columns: 1fr;
    }
    
    .roadmap-timeline::before {
        display: none;
    }
    
    .controls {
        right: 50%;
        transform: translateX(50%);
        bottom: 1rem;
    }
    
    .dots-indicator {
        bottom: 4rem;
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }
    
    .keyboard-hint {
        display: none;
    }
}