:root {
    --bg-color: #050505;
    --card-bg: rgba(20, 20, 20, 0.8);
    --accent-color: #00d2ff;
    --accent-gradient: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.8);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    background-color: transparent;
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Background Video */
.bg-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 5, 5, 0.88);
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    padding: 4rem 0;
    animation: fadeInDown 1s ease-out;
}

.logo {
    font-size: clamp(3rem, 10vw, 7rem);
    font-weight: 900;
    text-transform: uppercase;
    background: linear-gradient(to bottom, #ffffff, #ffffff, rgba(255, 255, 255, 0.4));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    letter-spacing: -0.05em;
    line-height: 1.1;
    filter: drop-shadow(0 20px 40px rgba(255, 255, 255, 0.15));
}

.subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    max-width: 600px;
    margin: 1.5rem auto 0;
    font-weight: 700;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.8rem 2rem;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: inline-block;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.disclaimer-box {
    max-width: 800px;
    margin: 2.5rem auto 0;
    padding: 1.5rem 2rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-left: 4px solid var(--accent-color);
    border-radius: 12px;
    backdrop-filter: blur(12px);
    text-align: left;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

.disclaimer-box p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

.disclaimer-box strong {
    color: #ffffff;
    font-weight: 700;
}

/* Filters */
.filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    backdrop-filter: blur(10px);
}

.filter-btn.active {
    background: #ffffff;
    color: #000000;
    border-color: #ffffff;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.filter-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Grid */
.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
    padding: 1rem;
}

.demo-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(12px);
    position: relative;
}

.demo-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: rgba(0, 210, 255, 0.5);
    box-shadow: var(--glass-shadow), 0 0 30px rgba(0, 210, 255, 0.1);
}

.demo-preview {
    width: 100%;
    height: 220px;
    background: #111;
    position: relative;
    overflow: hidden;
}

.demo-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.demo-card:hover .demo-preview img {
    transform: scale(1.1);
}

.demo-info {
    padding: 1.5rem;
}

.demo-header-info {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.8rem;
}

.demo-category {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent-color);
    font-weight: 700;
}

.demo-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    justify-content: flex-end;
}

.tech-tag {
    font-size: 0.65rem;
    padding: 0.2rem 0.6rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    color: var(--text-secondary);
    font-weight: 500;
}

.demo-title {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.demo-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.demo-actions {
    display: flex;
    gap: 1rem;
}

.view-btn {
    flex: 1;
    padding: 0.8rem;
    border-radius: 12px;
    border: none;
    background: var(--accent-gradient);
    color: white;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: 0.3s;
}

.view-btn:hover {
    filter: brightness(1.1);
    box-shadow: 0 5px 15px rgba(0, 210, 255, 0.3);
}

/* Back Button */
.back-btn {
    position: fixed;
    top: 2rem;
    left: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    z-index: 100;
    transition: all 0.3s ease;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.back-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-5px);
}

/* Final CTA */
.final-cta {
    margin-top: 6rem;
    padding: 6rem 2rem;
    text-align: center;
    background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.03) 100%);
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.cta-subtitle {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 5px;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 800;
}

.final-cta h2 {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 900;
    text-transform: uppercase;
    line-height: 1.1;
    background: linear-gradient(to right, #ffffff, rgba(255, 255, 255, 0.5));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    max-width: 800px;
    margin: 0 auto;
}

.cta-btn {
    margin-top: 2rem;
    display: inline-block;
    background: #ffffff;
    color: #000000;
    text-decoration: none;
    padding: 1.2rem 3rem;
    border-radius: 50px;
    font-weight: 800;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

.cta-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(255, 255, 255, 0.4);
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tablet Optimization */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    .demo-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 1.5rem;
    }
    .back-btn {
        top: 1rem;
        left: 1rem;
        padding: 0.5rem 1rem;
        font-size: 0.6rem;
    }
}

/* Active Badge for Live/Production Demos */
.active-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(18, 38, 25, 0.85);
    border: 1.5px solid #22c55e;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    font-weight: 800;
    color: #22c55e;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
    z-index: 10;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.active-dot {
    width: 8px;
    height: 8px;
    background-color: #22c55e;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 10px #22c55e;
    animation: pulseDot 1.8s infinite ease-in-out;
}

@keyframes pulseDot {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
        box-shadow: 0 0 6px #22c55e;
    }
    50% {
        transform: scale(1.3);
        opacity: 0.7;
        box-shadow: 0 0 12px #22c55e;
    }
}