:root {
    --color-background-dark: #0A0A0C;
    --color-background-medium: #1A1A1D;
    --color-text-light: #E0E0E0;
    --color-accent-cyan: #00FFFF;
    --color-accent-violet: #8A2BE2;
    --color-accent-emerald: #00FF7F;
    --color-border-glow: rgba(0, 255, 255, 0.3);
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--color-text-light);
    background-color: var(--color-background-dark);
    line-height: 1.6;
    overflow-x: hidden; /* Prevent horizontal scroll */
}

/* Global Styles */
h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--color-accent-cyan);
    text-align: center;
    margin-bottom: 1em;
    text-shadow: 0 0 8px var(--color-accent-cyan);
}

a {
    color: var(--color-accent-cyan);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-accent-emerald);
}

.btn {
    display: inline-block;
    padding: 12px 25px;
    background: linear-gradient(45deg, var(--color-accent-cyan), var(--color-accent-violet));
    color: var(--color-background-dark);
    border-radius: 5px;
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 1px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 25px rgba(0, 255, 255, 0.8);
}

/* Header and Navigation */
header {
    background-color: var(--color-background-medium);
    padding: 15px 0;
    border-bottom: 1px solid var(--color-border-glow);
    box-shadow: 0 0 10px var(--color-border-glow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8em;
    color: var(--color-accent-emerald);
    text-shadow: 0 0 10px var(--color-accent-emerald);
    display: flex;
    align-items: center;
}

.logo-icon {
    margin-right: 10px;
    width: 30px; /* Adjust size as needed */
    height: 30px; /* Adjust size as needed */
}

.nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links li a {
    font-weight: bold;
    text-transform: uppercase;
    padding: 5px 0;
    position: relative;
}

.nav-links li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--color-accent-cyan);
    left: 0;
    bottom: -5px;
    transition: width 0.3s ease;
}

.nav-links li a:hover::after {
    width: 100%;
}

/* Hamburger Menu */
.hamburger {
    display: none; /* Hidden by default on desktop */
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001; /* Above nav links when open */
}

.hamburger .bar {
    width: 100%;
    height: 3px;
    background-color: var(--color-accent-cyan);
    border-radius: 5px;
    transition: all 0.3s ease-in-out;
}

.hamburger.is-active .bar:nth-child(1) {
    transform: translateY(11px) rotate(45deg);
}

.hamburger.is-active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.is-active .bar:nth-child(3) {
    transform: translateY(-11px) rotate(-45deg);
}

.language-selector-desktop {
    margin-left: auto; /* Pushes the language selector to the right */
    margin-right: 20px; /* Space between selector and nav links */
}

.language-selector-desktop select,
.language-selector-mobile select {
    background-color: var(--color-background-dark);
    color: var(--color-text-light);
    border: 1px solid var(--color-accent-cyan);
    padding: 8px 12px;
    border-radius: 5px;
    font-family: var(--font-body);
    font-size: 0.9em;
    cursor: pointer;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0 5px rgba(0, 255, 255, 0.3);
}

.language-selector-desktop select:hover,
.language-selector-mobile select:hover {
    border-color: var(--color-accent-emerald);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

.language-selector-desktop select option,
.language-selector-mobile select option {
    background-color: var(--color-background-dark);
    color: var(--color-text-light);
}

.language-selector-mobile {
    display: none; /* Hidden by default */
    margin-top: 20px; /* Space from nav links */
}

/* Sections */
section {
    padding: 100px 20px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    padding-top: 80px; /* Adjust for fixed header */
    background: radial-gradient(circle at center, rgba(0, 255, 255, 0.05) 0%, transparent 70%);
    position: relative;
}

.hero-content {
    z-index: 1;
}

.hero h1 {
    font-size: 3em; /* Slightly smaller for desktop */
    margin-bottom: 0.5em;
    line-height: 1.2;
}

.hero p {
    font-size: 1.1em; /* Slightly smaller for desktop */
    margin-bottom: 2em;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-text-light);
}

/* Abstract background patterns for hero */
.hero::before, .hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(50px);
    z-index: 0;
}

.hero::before {
    width: 400px;
    height: 400px;
    background-color: var(--color-accent-cyan);
    top: 10%;
    left: -5%;
    animation: float1 10s infinite ease-in-out alternate;
}

.hero::after {
    width: 500px;
    height: 500px;
    background-color: var(--color-accent-violet);
    bottom: 5%;
    right: -10%;
    animation: float2 12s infinite ease-in-out alternate;
}

@keyframes float1 {
    0% { transform: translate(0, 0); }
    50% { transform: translate(20px, 30px); }
    100% { transform: translate(0, 0); }
}

@keyframes float2 {
    0% { transform: translate(0, 0); }
    50% { transform: translate(-20px, -30px); }
    100% { transform: translate(0, 0); }
}

/* Services Section */
.services {
    background-color: var(--color-background-medium);
    border-top: 1px solid var(--color-border-glow);
    border-bottom: 1px solid var(--color-border-glow);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 3em;
}

.service-item {
    background-color: var(--color-background-dark);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid rgba(0, 255, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.3);
}

.service-item h3 {
    color: var(--color-accent-emerald);
    font-size: 1.5em;
    margin-top: 0;
    text-shadow: none;
}

.service-item p {
    color: var(--color-text-light);
}

/* Case Studies Section */
.case-studies {
    background-color: var(--color-background-dark);
}

.case-study-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 3em;
}

.case-study-item {
    background-color: var(--color-background-medium);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid rgba(138, 43, 226, 0.1);
    box-shadow: 0 0 20px rgba(138, 43, 226, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-study-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 0 30px rgba(138, 43, 226, 0.3);
}

.case-study-item h3 {
    color: var(--color-accent-violet);
    font-size: 1.4em;
    margin-top: 0;
    text-align: left;
    text-shadow: none;
}

.case-study-item p {
    color: var(--color-text-light);
    text-align: left;
}

/* Call to Action (CTA) Section */
.cta {
    text-align: center;
    background: linear-gradient(90deg, rgba(0, 255, 255, 0.1), rgba(138, 43, 226, 0.1));
    padding: 60px 20px;
    border-radius: 10px;
    margin-bottom: 50px;
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.2);
}

.cta h2 {
    font-size: 2.5em;
    margin-bottom: 0.8em;
}

.cta p {
    font-size: 1.2em;
    margin-bottom: 2em;
}

.cta .btn.primary {
    background: linear-gradient(45deg, var(--color-accent-emerald), var(--color-accent-cyan));
    box-shadow: 0 0 15px rgba(0, 255, 127, 0.5);
}

.cta .btn.primary:hover {
    box-shadow: 0 0 25px rgba(0, 255, 127, 0.8);
}

/* Footer */
footer {
    background-color: var(--color-background-medium);
    color: var(--color-text-light);
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid var(--color-border-glow);
    font-size: 0.9em;
}

/* Contact Form Section */
.contact-form-section {
    background-color: var(--color-background-dark);
    padding: 80px 20px;
    max-width: 800px;
    margin: 0 auto;
    border-top: 1px solid var(--color-border-glow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 3em;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    color: var(--color-text-light);
    margin-bottom: 8px;
    font-weight: bold;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    background-color: var(--color-background-medium);
    border: 1px solid var(--color-accent-cyan);
    color: var(--color-text-light);
    padding: 12px;
    border-radius: 5px;
    font-family: var(--font-body);
    font-size: 1em;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    border-color: var(--color-accent-emerald);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

.contact-form .btn {
    align-self: flex-start; /* Align button to the left */
    margin-top: 20px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .contact-form-section {
        padding: 60px 15px; /* Adjust padding for tablets */
        max-width: 700px; /* Slightly smaller max-width */
    }

    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group textarea {
        padding: 10px; /* Slightly smaller padding */
        font-size: 0.95em; /* Slightly smaller font */
    }

    .contact-form .btn {
        padding: 10px 20px; /* Smaller button padding */
        font-size: 0.9em; /* Smaller button font */
    }
    /* Adjust general padding for larger tablets */
    section {
        padding: 80px 15px;
    }

    .hero h1 {
        font-size: 3em;
    }

    .hero p {
        font-size: 1.2em;
    }

    .hero-content h1 {
        font-size: 2.8em; /* Slightly smaller for tablets */
    }

    .hero-content p {
        font-size: 1.1em; /* Slightly smaller for tablets */
    }

    .service-item, .case-study-item {
        padding: 25px;
    }
}

@media (max-width: 768px) {
    nav {
        flex-wrap: nowrap; /* Prevent wrapping for main nav items */
        justify-content: space-between; /* Distribute items */
        align-items: center; /* Vertically align items */
    }

    nav .logo {
        margin-bottom: 0; /* Reset margin */
    }

    .hamburger {
        display: flex; /* Show hamburger on mobile */
        order: 3; /* Place after logo and language selector */
    }

    .language-selector-desktop {
        display: none; /* Hide desktop selector on mobile */
    }

    .nav-links {
        display: none; /* Hidden by default */
        flex-direction: column;
        width: 100%;
        text-align: center;
        background-color: var(--color-background-medium);
        position: absolute;
        top: 100%; /* Position below header */
        left: 0;
        padding: 20px 0;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
        transition: transform 0.3s ease-in-out;
        transform: translateY(-100%); /* Start off-screen */
    }

    .nav-links.is-active {
        display: flex; /* Show when active */
        transform: translateY(0); /* Slide in */
    }

    .nav-links li {
        margin: 10px 0;
    }

    .language-selector-mobile {
        display: block; /* Show mobile selector when menu is active */
        margin: 20px auto 0 auto; /* Center and add space */
    }

    .language-selector-mobile select {
        width: 180px; /* Smaller width for mobile selector */
        font-size: 0.8em; /* Smaller font size */
        padding: 6px 10px;
    }

    .hero {
        flex-direction: column; /* Stack hero content and visuals vertically */
        min-height: 60vh; /* Reduced height for tablets */
        padding-top: 120px; /* More space for stacked header */
    }

    .hero-content {
        margin-bottom: 30px; /* Space between content and visuals */
    }

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

    .hero p {
        font-size: 1em;
    }

    .service-grid, .case-study-grid {
        grid-template-columns: 1fr;
    }

    .cta h2 {
        font-size: 2em;
    }

    .cta p {
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .contact-form-section {
        padding: 40px 15px; /* Further adjust padding for mobile */
        max-width: 100%; /* Full width on very small screens */
    }

    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group textarea {
        padding: 8px; /* Even smaller padding */
        font-size: 0.9em; /* Even smaller font */
    }

    .contact-form .btn {
        width: 100%; /* Full width button */
        text-align: center;
        align-self: center; /* Center the button */
    }

    .hero {
        min-height: 50vh; /* Further reduced height for mobile phones */
        padding-top: 100px; /* Adjust padding for smaller screens */
    }

    .hero-content h1 {
        font-size: 1.8em; /* Further reduced for mobile phones */
    }

    .hero-content p {
        font-size: 0.8em; /* Further reduced for mobile phones */
    }

    .logo {
        font-size: 1.5em;
    }

    .logo-icon {
        width: 24px;
        height: 24px;
    }

    .hero h1 {
        font-size: 2em;
    }

    .hero p {
        font-size: 0.9em;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9em;
    }

    h1, h2, h3 {
        margin-bottom: 0.8em;
    }

    .service-item h3 {
        font-size: 1.3em;
    }

    .case-study-item h3 {
        font-size: 1.2em;
    }
}

/* Accessibility - Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background-color: var(--color-accent-cyan);
    color: var(--color-background-dark);
    padding: 8px;
    z-index: 9999;
    font-weight: bold;
    text-decoration: none;
    transition: top 0.3s ease-in-out;
}

.skip-link:focus {
    top: 0;
}