/* --- RETRO FUTURISM DEĞİŞKENLERİ --- */
:root {
    --bg-dark: #0a0a12;         /* Derin Uzay Siyahı */
    --neon-pink: #ff00ff;       /* Synthwave Pembesi */
    --neon-cyan: #00ffff;       /* Siber Camgöbeği */
    --neon-purple: #bd00ff;     /* Lazer Moru */
    --grid-line: rgba(189, 0, 255, 0.2);
    --text-main: #ffffff;
    --text-dim: #e0e0e0;
    --font-head: 'Orbitron', sans-serif; /* Fütüristik Başlık */
    --font-body: 'Exo 2', sans-serif;    /* Okunabilir Tekno */
    --max-width: 1200px;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    
    /* Retro Grid Arka Plan */
    background-image: 
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center bottom;
    /* Ufuk çizgisi efekti için gradient */
    background: linear-gradient(to bottom, #050505 20%, #1a0b2e 100%);
}

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@300;400;700&family=Orbitron:wght@500;700;900&display=swap');

a { text-decoration: none; color: inherit; transition: 0.3s ease; }
ul { list-style: none; }
img { width: 100%; height: auto; display: block; border: 2px solid var(--neon-cyan); box-shadow: 0 0 15px var(--neon-cyan); }

/* --- SUN EFFECT (Retro Güneş) --- */
.retro-sun {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: linear-gradient(to top, var(--neon-pink), var(--neon-purple));
    border-radius: 50%;
    z-index: -1;
    opacity: 0.3;
    filter: blur(40px);
    pointer-events: none;
}

/* --- HEADER --- */
header {
    background: rgba(10, 10, 18, 0.9);
    border-bottom: 2px solid var(--neon-pink);
    box-shadow: 0 0 20px var(--neon-pink);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-head);
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: 2px;
    color: var(--neon-cyan);
    text-shadow: 2px 2px 0px var(--neon-purple);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links { display: flex; gap: 30px; }

.nav-links a {
    font-family: var(--font-head);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--neon-pink);
    text-shadow: 0 0 10px var(--neon-pink);
}

.nav-links a::after {
    content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px;
    background: var(--neon-cyan); transition: 0.3s;
    box-shadow: 0 0 5px var(--neon-cyan);
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.burger { display: none; cursor: pointer; font-size: 2rem; color: var(--neon-cyan); }

/* --- LAYOUTS --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 80px 20px;
    flex: 1;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px; }

/* --- COMPONENTS --- */
.retro-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--neon-purple);
    padding: 30px;
    box-shadow: 0 0 15px rgba(189, 0, 255, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
    backdrop-filter: blur(5px);
    position: relative;
    overflow: hidden;
}

.retro-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 30px var(--neon-purple), inset 0 0 20px rgba(189, 0, 255, 0.2);
    border-color: var(--neon-cyan);
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    background: transparent;
    color: var(--neon-cyan);
    font-family: var(--font-head);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    border: 2px solid var(--neon-cyan);
    box-shadow: 0 0 10px var(--neon-cyan);
    cursor: pointer;
    transition: 0.3s;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    background: var(--neon-cyan);
    color: #000;
    box-shadow: 0 0 30px var(--neon-cyan);
}

.icon-box svg { 
    width: 50px; height: 50px; 
    fill: var(--neon-pink); 
    margin-bottom: 20px; 
    filter: drop-shadow(0 0 5px var(--neon-pink));
}

/* --- TYPOGRAPHY --- */
h1, h2, h3 {
    font-family: var(--font-head);
    text-transform: uppercase;
    margin-bottom: 20px;
    line-height: 1.2;
}

h1 { 
    font-size: 3.5rem; 
    background: linear-gradient(to right, var(--neon-cyan), var(--neon-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 5px rgba(255,0,255,0.5));
}

h2 { font-size: 2.5rem; color: var(--text-main); border-bottom: 2px solid var(--neon-purple); display: inline-block; padding-bottom: 10px; }
p { font-size: 1.1rem; color: var(--text-dim); margin-bottom: 20px; }

/* --- HERO --- */
.hero { padding: 80px 20px; position: relative; }

/* --- FORMS --- */
.form-group { margin-bottom: 25px; }
label { display: block; margin-bottom: 8px; font-family: var(--font-head); color: var(--neon-cyan); }
input, textarea, select {
    width: 100%;
    padding: 15px;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid var(--neon-purple);
    color: var(--neon-pink);
    font-family: 'Exo 2', sans-serif;
    font-size: 1.1rem;
    outline: none;
}
input:focus, textarea:focus { border-color: var(--neon-cyan); box-shadow: 0 0 15px var(--neon-cyan); }

/* --- FOOTER --- */
footer {
    background: #050508;
    border-top: 2px solid var(--neon-cyan);
    box-shadow: 0 0 20px var(--neon-cyan);
    padding: 50px 0 20px;
    margin-top: auto;
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-col h4 { color: var(--neon-pink); font-family: var(--font-head); margin-bottom: 15px; text-shadow: 0 0 5px var(--neon-pink); }
.footer-col a { display: block; margin-bottom: 8px; color: var(--text-dim); }
.footer-col a:hover { color: var(--neon-cyan); text-shadow: 0 0 8px var(--neon-cyan); padding-left: 5px; }

.tr-phone {
    font-family: var(--font-head);
    color: var(--neon-cyan);
    font-size: 1.5rem;
    text-shadow: 0 0 10px var(--neon-cyan);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute; top: 75px; left: 0; width: 100%;
        background: rgba(10, 10, 18, 0.98);
        flex-direction: column; padding: 30px; text-align: center;
        border-bottom: 2px solid var(--neon-pink);
    }
    .nav-links.active { display: flex; }
    .burger { display: block; }
    
    .grid-2 { grid-template-columns: 1fr; }
    h1 { font-size: 2.5rem; text-align: center; }
    .hero-content { text-align: center; }
    .hero-btn { display: flex; justify-content: center; }
    
    .footer-content { flex-direction: column; text-align: center; }
    .tr-phone { justify-content: center; }
}