:root {
    --primary: #60A5FA;
    --primary-hover: #3B82F6;
    --background: #111827;
    --background-light: #1F2937;
    --text: #F9FAFB;
    --text-muted: #9CA3AF;
    --border: #374151;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.5;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navigation */
nav {
    position: fixed;
    width: 100%;
    background-color: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: transform 0.3s ease-in-out;
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: bold;
    z-index: 50;
}

.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 50;
}

.hamburger {
    width: 24px;
    height: 20px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text);
    transition: all 0.3s ease;
}

.mobile-menu-button.active .hamburger-top {
    transform: translateY(9px) rotate(45deg);
}

.mobile-menu-button.active .hamburger-middle {
    opacity: 0;
}

.mobile-menu-button.active .hamburger-bottom {
    transform: translateY(-9px) rotate(-45deg);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Hero Section */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(17, 24, 39, 0.5), rgba(17, 24, 39, 0.9));
    z-index: 1;
}

.hero-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1rem;
    animation: fadeIn 1s ease-out;
}

.hero h1 {
    font-size: 3.75rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.highlight {
    color: var(--primary);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 36rem;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
}

.btn.primary {
    background-color: var(--primary);
    color: white;
}

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

.btn.secondary {
    border: 1px solid var(--border);
    color: var(--text);
}

.btn.secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

/* Services Section */
.services {
    padding: 4rem 0;
    background-color: var(--background);
    scroll-margin-top: 4rem;
}

.services h2 {
    font-size: 1.875rem;
    font-weight: bold;
    margin-bottom: 3rem;
    text-align: center;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

.service-card {
    background-color: var(--background-light);
    border-radius: 1rem;
    padding: 2rem;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--card-shadow);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--primary), var(--primary-hover));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(96, 165, 250, 0.1);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    color: var(--primary);
    transition: all 0.3s ease;
}

.service-card:hover .service-icon {
    background-color: var(--primary);
    color: white;
    transform: rotate(360deg);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.service-content ul {
    list-style: none;
    padding: 0;
}

.service-content li {
    color: var(--text-muted);
    margin: 0.5rem 0;
    transition: color 0.2s ease;
}

.service-content li:hover {
    color: var(--text);
}

/* Projects Section */
.projects {
    padding: 4rem 0;
    background-color: var(--background-light);
    scroll-margin-top: 4rem;
}

.projects h2 {
    font-size: 1.875rem;
    font-weight: bold;
    margin-bottom: 2rem;
    text-align: center;
}

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

.project-card {
    background-color: var(--background);
    border-radius: 1rem;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--card-shadow);
}

.project-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 1.5rem 1rem;
    color: var(--text);
}

.project-description {
    padding: 0 1.5rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-tech {
    padding: 0 1.5rem;
    margin-bottom: 1.5rem;
}

.project-tech h4 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    padding: 0.25rem 0.75rem;
    background-color: rgba(96, 165, 250, 0.1);
    color: var(--primary);
    border-radius: 9999px;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.tag:hover {
    background-color: var(--primary);
    color: white;
}

.project-links {
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    border-top: 1px solid var(--border);
}

.project-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.875rem;
}

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

.project-link svg {
    transition: transform 0.2s;
}

.project-link:hover svg {
    transform: translateX(2px);
}

/* Footer */
footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border);
}

footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s;
}

.social-link:hover {
    color: var(--primary);
    transform: translateY(-2px);
}

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

/* Mobile Navigation */
@media (max-width: 768px) {
    .mobile-menu-button {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--background);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: 0.3s ease-in-out;
        gap: 2rem;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.5rem;
        padding: 1rem;
        opacity: 0;
        transform: translateY(20px);
        transition: all 0.3s ease;
    }

    .nav-links.active a {
        opacity: 1;
        transform: translateY(0);
    }

    .nav-links.active a:nth-child(1) { transition-delay: 0.1s; }
    .nav-links.active a:nth-child(2) { transition-delay: 0.2s; }
    .nav-links.active a:nth-child(3) { transition-delay: 0.3s; }
    .nav-links.active a:nth-child(4) { transition-delay: 0.4s; }

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

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
        text-align: center;
    }

    .services-grid {
        grid-template-columns: 1fr;
        padding: 0.5rem;
    }

    .service-card {
        padding: 1.5rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        padding: 0.5rem;
    }

    footer .container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* Medium screens */
@media (min-width: 769px) and (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Focus States */
button:focus,
a:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Prevent scroll when menu is open */
body.menu-open {
    overflow: hidden;
}