/* style.css */
:root {
    --primary-color: #0061f2; /* Teknoloji Mavisi */
    --secondary-color: #f8f9fa;
    --text-dark: #212529;
    --text-light: #6c757d;
    --white: #ffffff;
    --accent: #00cfd5; /* Neon Turkuaz */
    --transition: all 0.3s ease;
}

* {
    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-dark);
    background-color: var(--white);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* --- Header & Navigasyon --- */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 20px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    cursor: pointer;
}

/* --- Genel Düzen --- */
main {
    flex: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

h1, h2 {
    margin-bottom: 20px;
    color: var(--text-dark);
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 10px 25px;
    text-decoration: none;
    border-radius: 5px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    background-color: #004bbd;
    transform: translateY(-2px);
}

/* --- Hero Bölümü --- */
.hero {
    background: linear-gradient(rgba(0, 97, 242, 0.8), rgba(0, 97, 242, 0.6)), url('https://images.pexels.com/photos/356056/pexels-photo-356056.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 20px;
    text-align: center;
}

.hero h1 { color: white; font-size: 3rem; }
.hero p { font-size: 1.2rem; margin-bottom: 30px; }

/* --- Grid Yapıları (Ürünler ve Yorumlar) --- */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--white);
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: 20px;
}

/* --- İletişim Formu --- */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

/* --- Footer --- */
footer {
    background-color: var(--text-dark);
    color: var(--white);
    padding: 40px 0 20px;
    margin-top: 50px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-section {
    margin-bottom: 20px;
}

.footer-section h3 { color: var(--accent); margin-bottom: 15px; }
.footer-section a { color: #ddd; text-decoration: none; display: block; margin-bottom: 5px; }
.footer-section a:hover { color: var(--primary-color); }

.phone-number {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: bold;
    font-size: 1.1rem;
}

/* --- Responsive (Mobil) --- */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: 20px;
        text-align: center;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: block;
        font-size: 1.5rem;
    }

    .hero h1 { font-size: 2rem; }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .phone-number {
        justify-content: center;
    }
}