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

:root {
    --primary-color: #4a90e2;
    --secondary-color: #667eea;
    --dark-bg: #000000;
    --dark-overlay: rgba(0, 0, 0, 0.7);
    --light-text: #ffffff;
    --gray-text: #cccccc;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--light-text);
    background-color: #0a0a0a;
    line-height: 1.6;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--dark-bg);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    color: var(--gray-text);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--light-text);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    background-image: url('lef-background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-overlay);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 20px;
}

.hero-title {
    font-size: 80px;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: 8px;
    text-transform: uppercase;
    background: linear-gradient(135deg, #667eea 0%, #4a90e2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 32px;
    margin-bottom: 15px;
    font-weight: 300;
    letter-spacing: 2px;
}

.hero-description {
    font-size: 18px;
    color: var(--gray-text);
    margin-bottom: 40px;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: linear-gradient(135deg, #667eea 0%, #4a90e2 100%);
    color: var(--light-text);
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    border-radius: 50px;
    transition: transform 0.3s, box-shadow 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(74, 144, 226, 0.4);
}

/* Sections */
.section {
    padding: 100px 20px;
}

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

.section-title {
    font-size: 48px;
    text-align: center;
    margin-bottom: 20px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.section-description {
    text-align: center;
    font-size: 18px;
    color: var(--gray-text);
    margin-bottom: 60px;
}

/* Services Section */
.services-section {
    background-color: #0f0f0f;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.service-card {
    background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #222;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(74, 144, 226, 0.2);
    border-color: var(--primary-color);
}

.service-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.service-card p {
    color: var(--gray-text);
    line-height: 1.8;
}

/* Portfolio Section */
.portfolio-section {
    background-color: #000;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 60px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    aspect-ratio: 16/9;
    cursor: pointer;
    transition: transform 0.3s;
}

.portfolio-item:hover {
    transform: scale(1.05);
}

.portfolio-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--gray-text);
}

/* About Section */
.about-section {
    background-color: #0f0f0f;
}

.about-content {
    max-width: 800px;
    margin: 60px auto 0;
    text-align: center;
    font-size: 18px;
    line-height: 2;
    color: var(--gray-text);
}

/* Contact Section */
.contact-section {
    background-color: #000;
}

.contact-content {
    text-align: center;
    margin-top: 60px;
}

.contact-content p {
    font-size: 20px;
    margin-bottom: 30px;
    color: var(--gray-text);
}

/* Footer */
.footer {
    background-color: var(--dark-bg);
    padding: 40px 20px;
    border-top: 1px solid #222;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-name {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--light-text);
}

.footer-contact {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--gray-text);
}

.footer-contact a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-contact a:hover {
    color: var(--secondary-color);
}

.footer-copyright {
    font-size: 14px;
    color: #666;
    margin-top: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: var(--dark-bg);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.5);
        padding: 20px 0;
        gap: 0;
    }

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

    .nav-item {
        margin: 20px 0;
    }

    .hero-title {
        font-size: 50px;
        letter-spacing: 4px;
    }

    .hero-subtitle {
        font-size: 24px;
    }

    .section-title {
        font-size: 36px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 20px;
    }

    .logo img {
        height: 40px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .section {
        padding: 60px 20px;
    }
}