:root {
    --primary-color: #00E5FF; /* Tech Cyan */
    --primary-hover: #00b8cc;
    --dark-bg: #030305;
    --light-bg: #0C0C14;
    --text-main: #E2E8F0;
    --text-muted: #8B949E;
    --white: #FFFFFF;
    --border-color: rgba(0, 229, 255, 0.15);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --nav-height: 80px;
    --radius: 16px;
    --glow: 0 0 25px rgba(0, 229, 255, 0.4);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--dark-bg);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(0, 229, 255, 0.03), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(177, 0, 255, 0.03), transparent 25%);
    -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: inherit;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(3, 3, 5, 0.75);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: 1px;
}

.logo-icon {
    display: inline-block;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary-color), #B100FF);
    border-radius: 8px;
    box-shadow: var(--glow);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.lang-btn {
    background: rgba(0, 229, 255, 0.1);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    font-family: inherit;
    transition: all 0.2s ease;
}

.lang-btn:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
    box-shadow: var(--glow);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: var(--nav-height);
    color: var(--white);
    text-align: center;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5); /* Dark overlay */
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    padding: 0 24px;
}

.hero-content h1 {
    font-size: 4rem;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.hero-content p {
    font-size: 1.25rem;
    font-weight: 300;
    opacity: 0.9;
    margin-bottom: 40px;
}

.cta-btn {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 16px 40px;
    border-radius: 30px;
    font-size: 1.125rem;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.3s ease, background 0.3s ease;
    box-shadow: 0 10px 20px rgba(0, 102, 255, 0.3);
}

.cta-btn:hover {
    transform: translateY(-2px);
    background: var(--primary-hover);
}

/* Sections */
.section {
    padding: 100px 0;
}

.dark-bg {
    background: var(--dark-bg);
    color: var(--white);
}

.light-bg {
    background: var(--light-bg);
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.about-card {
    background: rgba(255,255,255,0.05);
    padding: 40px;
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.1);
}

.about-card h2 {
    font-size: 2rem;
    color: var(--primary-color);
}

.about-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.125rem;
    line-height: 1.8;
}

.about-card.full-width {
    grid-column: 1 / -1;
}

/*! Carousel Showcase Setup */
.container-large {
    max-width: 1400px;
}

.glow-text {
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--white);
    text-shadow: 0 0 15px rgba(0, 229, 255, 0.5);
}

.carousel-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.carousel-track-container {
    position: relative;
    width: 100%;
    height: 65vh;
    min-height: 500px;
    overflow: hidden;
}

.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.large-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.large-video video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #000;
}

.overlay-panel {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 40px;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    z-index: 2;
    pointer-events: none;
}

.overlay-panel h4 {
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
}

.tech-sub {
    color: var(--primary-color);
    font-family: monospace;
    font-size: 1.1rem;
    letter-spacing: 1px;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 2rem;
    line-height: 48px;
    text-align: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.carousel-btn:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
    box-shadow: var(--glow);
}

.prev-btn { left: 20px; }
.next-btn { right: 20px; }

.carousel-indicators {
    text-align: center;
    margin-top: 24px;
}

.indicator-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    margin: 0 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator-dot.active {
    background: var(--primary-color);
    width: 24px;
    border-radius: 5px;
    box-shadow: var(--glow);
}

/* Solutions Section */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.solution-item {
    background: rgba(255, 255, 255, 0.02);
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.05);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.solution-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 30px rgba(0,0,0,0.5), inset 0 0 20px rgba(0, 229, 255, 0.05);
}

.solution-item h3 {
    font-size: 1.25rem;
    color: var(--white);
    margin-bottom: 12px;
}

.solution-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin: 0;
}

/* Footer */
.footer {
    background: #050505;
    color: var(--white);
    padding: 80px 0 40px;
    text-align: center;
}

.footer h2 {
    font-size: 2rem;
    margin-bottom: 40px;
    color: rgba(255,255,255,0.9);
}

.contact-info p {
    color: rgba(255,255,255,0.6);
}

/* Responsive */
@media (max-width: 992px) {
    .video-grid, .solutions-grid {
        grid-template-columns: 1fr 1fr;
    }
    .hero-content h1 {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* simple mobile fallback */
    }
    .lang-btn {
        display: block;
    }
    .about-grid, .video-grid, .solutions-grid {
        grid-template-columns: 1fr;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
}