:root {
    /* Colors - Light & Friendly Theme */
    --color-bg: #ffffff;
    --color-surface: #f4f6f9;
    --color-primary: #007acc;
    /* Keep Tech Blue - it works well on light */
    --color-secondary: #1a1d24;
    /* Dark for headings */
    --color-accent: #ff9f1c;
    --color-text-main: #2d3436;
    --color-text-muted: #636e72;
    --color-border: #e1e4e8;

    /* Typography */
    --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;

    /* Shadows & Effects */
    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: 1px solid rgba(0, 0, 0, 0.05);
}

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

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

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-secondary);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

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

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

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(0);
    }
}

.animate-fade-up {
    animation: fadeIn 0.8s ease-out forwards;
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-xl) 0;
}

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    backdrop-filter: blur(10px);
    background: var(--glass-bg);
    border-bottom: var(--glass-border);
    transition: padding 0.3s ease;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-secondary);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

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

.lang-switch {
    display: flex;
    gap: var(--spacing-sm);
    border-left: 1px solid var(--color-border);
    padding-left: var(--spacing-md);
    margin-left: var(--spacing-md);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-weight: 600;
    transition: color 0.3s ease;
}

.lang-btn.active {
    color: var(--color-primary);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 130vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: -200px;
    /* Offset navbar height */
    padding-top: 200px;
    padding-bottom: 100px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
    filter: brightness(0.4);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, rgba(0, 0, 0, 0.8) 100%);
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    padding-top: 280px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: var(--spacing-md);
    color: #ffffff;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: #e6e6e6;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 122, 204, 0.4);
}

.btn-primary:hover {
    background: #0062a3;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 122, 204, 0.5);
}

/* About Section */
.about-card {
    background: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-primary);
}

/* Services Cards */
.service-card {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: left;
}

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

.service-icon {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

/* Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    background: linear-gradient(rgba(15, 17, 21, 0.85), rgba(15, 17, 21, 0.95)), url('contact_bg.png');
    background-size: cover;
    background-position: center;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.contact-info {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-surface) 0%, rgba(0, 122, 204, 0.1) 100%);
}

.contact-form-wrapper {
    padding: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-text-main);
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: var(--color-surface);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-copy {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-lg);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        /* Can be enhanced with a hamburger menu later */
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

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

.hidden {
    display: none !important;
}