:root {
    --primary-color: #3b82f6;
    --secondary-color: #8b5cf6;
    --accent-color: #10b981;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --light-bg: #1e293b;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --nav-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background-color: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.logo-img {
    height: 50px;
    width: auto;
    margin-right: 12px;
    border-radius: 8px; /* Optional: adds rounded corners if the logo is square */
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s;
}

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

.nav-link:hover::after {
    width: 100%;
}

/* Mobile Menu */
.menu-toggle {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
}

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

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(to right, #3b82f6, #8b5cf6, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 2rem;
    color: var(--text-muted);
    margin-bottom: 30px;
    letter-spacing: 2px;
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

.hero-desc {
    max-width: 700px;
    margin: 0 auto 40px;
    font-size: 1.2rem;
    color: var(--text-muted);
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    animation: fadeInUp 1s ease-out 0.9s backwards;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.6);
}

.scroll-down {
    position: absolute;
    bottom: 30px;
    font-size: 2rem;
    color: var(--text-muted);
    animation: bounce 2s infinite;
    cursor: pointer;
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

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

.section-title {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 0 auto 20px;
    border-radius: 2px;
}

.text-left .section-line {
    margin: 0 0 20px 0;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--light-bg);
    padding: 40px 30px;
    border-radius: 15px;
    transition: all 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    background: #253248;
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.icon-box {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.3rem;
}

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

/* Tech Divider */
.tech-divider {
    height: 300px;
    background: fixed linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.8)), url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?q=80&w=2072&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.tech-content h2 {
    font-size: 3rem;
    color: white;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.tech-content p {
    font-size: 1.5rem;
    color: #e2e8f0;
    letter-spacing: 2px;
}

/* About Section */
.bg-light {
    background-color: #0b1120;
}

.about-wrapper {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.company-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.company-desc {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 1.05rem;
    text-align: justify;
}

.about-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
}

/* 3D Cube Animation */
.cube-wrapper {
    perspective: 800px;
    width: 200px;
    height: 200px;
}

.cube {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: rotate 10s infinite linear;
}

.face {
    position: absolute;
    width: 200px;
    height: 200px;
    background: rgba(59, 130, 246, 0.1);
    border: 2px solid var(--primary-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    font-weight: bold;
    color: white;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
}

.front  { transform: rotateY(0deg) translateZ(100px); }
.back   { transform: rotateY(180deg) translateZ(100px); }
.right  { transform: rotateY(90deg) translateZ(100px); }
.left   { transform: rotateY(-90deg) translateZ(100px); }
.top    { transform: rotateX(90deg) translateZ(100px); }
.bottom { transform: rotateX(-90deg) translateZ(100px); }

/* Footer */
.footer {
    background-color: var(--darker-bg);
    padding: 60px 0 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-brand h3 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.footer-brand p {
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--text-muted);
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: #64748b;
    font-size: 0.9rem;
}

.footer-bottom a:hover {
    color: var(--text-color);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes rotate {
    from { transform: rotateX(0) rotateY(0); }
    to { transform: rotateX(360deg) rotateY(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        position: relative;
    }

    .menu-toggle {
        display: block;
        z-index: 1001;
    }

    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 0;
        flex-direction: column;
        background-color: var(--dark-bg);
        width: 100%;
        height: 100vh;
        justify-content: center;
        align-items: center;
        transition: 0.3s;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .about-wrapper {
        flex-direction: column;
    }
    
    .about-visual {
        margin-top: 40px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}