:root {
    --bg-dark: #0a0a0f;
    --bg-card: #13131f;
    --primary: #00f2ff;
    --secondary: #7000ff;
    --text-main: #ffffff;
    --text-muted: #a0a0b0;
    --font-main: 'Inter', sans-serif;
    --font-display: 'Orbitron', sans-serif;
    --gradient-main: linear-gradient(135deg, var(--primary), var(--secondary));
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s;
}

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-main);
    transition: 0.3s;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background: radial-gradient(circle at center, #1a1a2e 0%, #0a0a0f 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../assets/hero_bg.png') no-repeat center center/cover;
    opacity: 0.4;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: 4rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.highlight {
    color: var(--primary);
    text-shadow: 0 0 20px rgba(0, 242, 255, 0.5);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--gradient-main);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 242, 255, 0.3);
}

/* Evolution Section */
.evolution {
    padding: 8rem 5%;
    background: linear-gradient(180deg, var(--bg-dark) 0%, #1a1a2e 50%, var(--bg-dark) 100%);
}

.evolution-content {
    max-width: 1000px;
    margin: 0 auto;
}

.evolution-content h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--primary);
    text-shadow: 0 0 10px rgba(0, 242, 255, 0.3);
}

.intro-text {
    font-size: 1.2rem;
    margin-bottom: 4rem;
    text-align: center;
    color: var(--text-muted);
    line-height: 1.8;
}

.evolution-block {
    margin-bottom: 4rem;
    padding: 2rem;
    background: rgba(19, 19, 31, 0.5);
    border-left: 3px solid var(--primary);
    border-radius: 0 10px 10px 0;
    transition: transform 0.3s;
}

.evolution-block:hover {
    transform: translateX(10px);
    background: rgba(19, 19, 31, 0.8);
}

.evolution-block h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.evolution-block p {
    color: var(--text-muted);
}

/* Features Section */
.features {
    padding: 8rem 5%;
    background: var(--bg-dark);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-muted);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
}

.icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-muted);
}

/* Showcase Section */
.showcase {
    padding: 8rem 5%;
    background: #0f0f16;
}

.model-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.model-card {
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    transition: transform 0.3s;
}

.model-card:hover {
    transform: scale(1.02);
}

.model-image {
    height: 300px;
    background-color: #2a2a3a;
    background-size: cover;
    background-position: center;
}

#img-alpha {
    background-image: url('../assets/robot_alpha.png');
}

#img-beta {
    background-image: url('../assets/robot_beta.png');
}

#img-gamma {
    background-image: url('../assets/robot_gamma.png');
}

.model-info {
    padding: 2rem;
}

.model-info h3 {
    font-family: var(--font-display);
    margin-bottom: 0.5rem;
    color: var(--primary);
    font-size: 1.2rem;
}

.model-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(0, 242, 255, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.model-specs {
    list-style: none;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: var(--text-muted);
}

.model-specs li {
    margin-bottom: 0.5rem;
}

.model-specs strong {
    color: var(--text-main);
}

.model-info p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* Contact Section */
.contact {
    padding: 8rem 5%;
    background: linear-gradient(to top, #1a1a2e, var(--bg-dark));
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
}

.newsletter-form input {
    flex: 1;
    padding: 1rem;
    border-radius: 50px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    outline: none;
}

.newsletter-form button {
    padding: 1rem 2rem;
    border-radius: 50px;
    border: none;
    background: var(--gradient-main);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s;
}

.newsletter-form button:hover {
    transform: scale(1.05);
}

/* Footer */
footer {
    background: #050508;
    padding: 4rem 5% 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    font-family: var(--font-display);
    margin-bottom: 1.5rem;
    color: var(--primary);
}

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

.footer-col a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 0.8rem;
    transition: color 0.3s;
}

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

.copyright {
    text-align: center;
    color: #555;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-card);
        padding: 2rem;
        flex-direction: column;
        text-align: center;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        margin: 1rem 0;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .newsletter-form {
        flex-direction: column;
    }
}