:root {
    --primary-color: #000000;
    --secondary-color: #333333;
    --text-color: #222222;
    --light-bg: #ffffff;
    --gray-bg: #f8f8f8;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

/* Header ve Navigation */
header {
    background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.8)), url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 1rem 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

nav {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem 5%;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    white-space: nowrap;
}

.nav-links {
    display: none;
}

.nav-links a {
    color: white;
    text-decoration: none;
    margin-left: 2rem;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    text-align: center;
    padding: 0 20px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    max-width: 800px;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 2rem;
    max-width: 600px;
    color: #e0e0e0;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    background-color: white;
    color: black;
    padding: 1rem 2.5rem;
    border-radius: 3px;
    text-decoration: none;
    transition: all 0.3s;
    font-weight: 500;
}

.cta-button:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
}

/* Hizmetler Section */
#hizmetler {
    padding: 2rem 0;
    background-color: var(--light-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: white;
    padding: 3rem;
    border-radius: 5px;
    text-align: left;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Hakkımızda Section */
#hakkimizda {
    display: none;
}

/* İletişim Section */
#iletisim {
    padding: 8rem 0;
    background-color: var(--light-bg);
    display: none;
}

#contact-form {
    max-width: 600px;
    margin: 2rem auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#contact-form input,
#contact-form textarea {
    padding: 1rem;
    border: 1px solid #e0e0e0;
    border-radius: 3px;
    font-size: 1rem;
}

#contact-form textarea {
    height: 150px;
}

#contact-form button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
}

#contact-form button:hover {
    background-color: var(--secondary-color);
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: white;
    padding: 4rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.social-links {
    display: none;
}

.copyright {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Container */
.container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 30px;
}

/* Section Başlıkları */
section h2 {
    display: none;
}

/* Responsive düzenlemeler */
@media (max-width: 1400px) {
    .container {
        max-width: 1140px;
    }
}

@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        text-align: center;
        align-items: center;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    section h2 {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .features {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .social-links {
        margin-top: 1rem;
    }
}