:root {
    --primary: #2563eb;
    --dark: #1e293b;
    --light: #f8fafc;
    --text: #334155;
    --white: #ffffff;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    background-color: var(--light);
    color: var(--text);
    line-height: 1.6;
}

/* --- Navigation --- */
nav {
    background: var(--white);
    padding: 1.5rem 10%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}


footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

footer a:hover {
    text-decoration: underline;
}


.logo { font-weight: 700; font-size: 1.5rem; color: var(--primary); letter-spacing: -1px; text-decoration: none; }

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    margin-left: 2rem;
    font-weight: 500;
    transition: 0.3s;
}

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

/* --- Layout Containers --- */
.container { padding: 40px 5%; max-width: 1200px; margin: 0 auto; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

/* --- UI Elements --- */
.card {
    background: var(--white);
    padding: 10px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.card:hover { transform: translateY(-5px); }

.hero { display: flex; align-items: center; gap: 50px; background: var(--white); padding: 80px 10%; }
.hero-text { flex: 1; }
.hero-text h1 { font-size: 3.5rem; line-height: 1.1; color: var(--dark); margin-bottom: 1.5rem; }
.hero-image { flex: 1; height: 450px; background: url('https://images.unsplash.com/photo-1523240795612-9a054b0db644?auto=format&fit=crop&q=80&w=800') center/cover; border-radius: 24px; }

/* --- Contact Box --- */
.contact-box { background: var(--dark); color: var(--white); padding: 50px; border-radius: 30px; max-width: 600px; margin: 40px auto; text-align: center; }
form { display: flex; flex-direction: column; gap: 15px; margin-top: 25px; }
input, textarea { padding: 15px; border-radius: 12px; border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.05); color: white; }
button { padding: 18px; background: var(--primary); color: white; border: none; border-radius: 12px; font-weight: 600; cursor: pointer; }

footer { text-align: center; padding: 40px; opacity: 0.6; }

@media (max-width: 768px) { .hero { flex-direction: column; text-align: center; } .about-grid { grid-template-columns: 1fr !important; } }