:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #1e293b;
    --accent-color: #3b82f6;
    --text-color: #334155;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --footer-bg: #0f172a;
    --footer-text: #94a3b8;
    --gradient: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 0.75rem;
    --font-main: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4.5rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    text-decoration: none;
}

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

.nav-list {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-list a {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Language Dropdown */
.lang-dropdown {
    position: relative;
    margin-left: 1rem;
}

.lang-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    /* Black/Dark color */
    transition: color 0.2s;
}

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

.lang-btn svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.lang-content {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background-color: white;
    min-width: 100px;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius);
    padding: 0.5rem 0;
    z-index: 1000;
    border: 1px solid #e2e8f0;
}

.lang-content.show {
    display: block;
}

.lang-content a {
    display: block;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: background-color 0.2s, color 0.2s;
}

.lang-content a:hover {
    background-color: #f1f5f9;
    color: var(--primary-color);
}

.lang-content a.active {
    color: var(--primary-color);
    font-weight: 700;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--secondary-color);
    transition: 0.3s;
}

/* Hero */
.hero {
    padding: 6rem 0;
    text-align: center;
    background: radial-gradient(circle at top right, #e0f2fe 0%, transparent 40%),
        radial-gradient(circle at bottom left, #e0e7ff 0%, transparent 40%);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

.text-gradient {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-color);
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

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

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: white;
    color: var(--secondary-color);
    border: 1px solid #e2e8f0;
}

.btn-secondary:hover {
    background-color: #f8fafc;
    border-color: #cbd5e1;
}

/* Sections */
.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--secondary-color);
    text-align: center;
    margin-bottom: 3rem;
}

.about,
.services,
.contact {
    padding: 5rem 0;
}

/* About */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.125rem;
}

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

.service-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid #f1f5f9;
}

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

.service-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--secondary-color);
}

.service-card p {
    color: #64748b;
}

/* Contact */
.contact {
    background-color: white;
}

.contact-intro {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.25rem;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--secondary-color);
    font-size: 1.125rem;
    font-weight: 500;
    padding: 1rem 2rem;
    background-color: var(--bg-color);
    border-radius: var(--radius);
    transition: background-color 0.2s;
}

.contact-item:hover {
    background-color: #e2e8f0;
}

/* Footer */
.footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 2rem 0;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .nav {
        display: none;
        position: absolute;
        top: 4.5rem;
        left: 0;
        width: 100%;
        background-color: white;
        padding: 1rem;
        box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    }

    .nav.active {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .contact-info {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
}