:root {
    --primary-color: #0f172a;
    --accent-color: #3b82f6;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --text-color: #334155;
    --bg-color: #f8fafc;
    --white: #ffffff;
    --font-main: 'Inter', sans-serif;
}

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

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    padding: 20px 0;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid #e2e8f0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    text-decoration: none;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav a {
    margin-left: 30px;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 400;
    transition: color 0.3s;
}

.nav a:hover {
    color: #3b82f6;
}

.hero {
    padding: 120px 0 80px;
    text-align: center;
    background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    line-height: 1.1;
}

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

.hero-text {
    font-size: 1.25rem;
    color: var(--text-color);
    max-width: 700px;
    margin: 0 auto 40px;
}

.btn-primary {
    display: inline-block;
    background: var(--accent-gradient);
    color: var(--white);
    padding: 14px 36px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.4);
}

.services {
    padding: 100px 0;
    background-color: var(--white);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 60px;
    font-weight: 700;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.card {
    padding: 30px;
    border-radius: 16px;
    background: var(--bg-color);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid transparent;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05);
    border-color: #e2e8f0;
}

.card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.25rem;
}

.projects {
    padding: 100px 0;
    background-color: var(--bg-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--white);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.project-client {
    font-weight: 700;
    color: var(--accent-color);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-sector {
    font-size: 0.8rem;
    color: #64748b;
    background: var(--bg-color);
    padding: 4px 12px;
    border-radius: 20px;
}

.project-card h3 {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.project-card p {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 15px;
    border-top: 1px solid #f1f5f9;
}

.tech-tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    background: var(--bg-color);
    padding: 5px 12px;
    border-radius: 6px;
}

.clients {
    padding: 100px 0;
    background-color: var(--white);
    text-align: center;
}

.clients-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.client-tag {
    padding: 12px 24px;
    background-color: var(--bg-color);
    border-radius: 50px;
    font-weight: 500;
    color: var(--text-color);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.client-tag:hover {
    border-color: #3b82f6;
    color: #3b82f6;
}

.contact {
    padding: 120px 0;
    text-align: center;
    background: var(--bg-color);
}

.contact h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.contact p {
    font-size: 1.2rem;
    margin-bottom: 40px;
}

.email-link {
    font-size: 2.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    font-weight: 700;
}

.email-link:hover {
    opacity: 0.8;
}

.footer {
    padding: 40px 0;
    text-align: center;
    color: #94a3b8;
    font-size: 0.9rem;
    background-color: var(--white);
    border-top: 1px solid #e2e8f0;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    .email-link {
        font-size: 1.5rem;
    }
}