/* GENEL AYARLAR VE DEĞİŞKENLER */
:root {
    --primary-color: #FF0000;
    --secondary-color: #FFFFFF;
    --background-color: #000000;
    --dark-gray: #121212;
    --font-family: 'Poppins', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--secondary-color);
    line-height: 1.7;
    background-image: linear-gradient(rgba(0,0,0,0.8), rgba(0,0,0,0.8)), url('https://www.transparenttextures.com/patterns/connected.png');
}

/* YARDIMCI SINIFLAR */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

/* HEADER */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid #222;
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 95px; /* Logonuzun yüksekliğini buradan ayarlayabilirsiniz */
    width: auto;  /* Yüksekliğe göre genişliği otomatik ayarlar, bozulmayı önler */
    margin-right: 15px; /* Logo ile yazı arasına boşluk koyar */
}

.main-nav {
    list-style: none;
    display: flex;
    align-items: center;
}

.main-nav li {
    margin-left: 2rem;
}

.main-nav a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

.cta-button {
    background-color: var(--primary-color);
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
    transition: transform 0.3s ease;
}

.cta-button:hover {
    color: var(--secondary-color);
    transform: scale(1.05);
}

/* BÖLÜMLER (SECTIONS) */
section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 6rem 0;
    text-align: center;
    border-bottom: 1px solid #1a1a1a;
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--primary-color);
}

.section-subtitle {
    max-width: 800px;
    margin: 0 auto;
    color: #ccc;
}


/* HERO BÖLÜMÜ */
.hero-section h1 {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.hero-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #ddd;
}

.hero-buttons .btn {
    text-decoration: none;
    color: var(--secondary-color);
    padding: 1rem 2.5rem;
    margin: 0 0.5rem;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    border: 2px solid var(--primary-color);
}
.btn-primary:hover {
    background-color: transparent;
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--secondary-color);
}
.btn-secondary:hover {
    background-color: var(--secondary-color);
    color: var(--background-color);
}

/* KART TASARIMI */
.card {
    background-color: var(--dark-gray);
    padding: 2.5rem 2rem;
    border-radius: 10px;
    border: 1px solid #222;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(255, 0, 0, 0.2);
}

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

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

.card p {
    color: #ccc;
}

/* İLETİŞİM BÖLÜMÜ */
.contact-options {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.contact-box {
    text-decoration: none;
    color: var(--secondary-color);
    border: 2px solid var(--secondary-color);
    padding: 2rem 3rem;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 280px;
    transition: all 0.3s ease;
}

.contact-box:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-5px);
}

.contact-box-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}
.contact-box-primary:hover {
    background-color: #d60000;
    color: var(--secondary-color);
}

.contact-box i {
    font-size: 2rem;
    margin-bottom: 1rem;
}
.contact-box span {
    font-weight: 600;
}


/* FOOTER */
.main-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    z-index: 1000;
    text-align: center;
}

.footer-nav {
    margin-bottom: 0.5rem;
}

.footer-nav a {
    color: #aaa;
    text-decoration: none;
    margin: 0 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    padding-bottom: 5px;
    border-bottom: 2px solid transparent;
}

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

.footer-nav a.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.copyright {
    color: #666;
    font-size: 0.9rem;
}


/* MOBİL UYUMLULUK */
@media(max-width: 768px) {
    .main-nav {
        display: none; /* Mobilde header menüsünü gizleyip hamburger menü eklenebilir. */
    }
    
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }

    section h2 {
        font-size: 2rem;
    }
    
    .footer-nav a {
        margin: 0 0.5rem;
        font-size: 0.9rem;
    }
}