/* --- CYBER FLOW DEĞİŞKENLERİ --- */
:root {
    --bg-deep: #050510;         /* Derin Uzay Siyahı */
    --neon-cyan: #00f3ff;       /* Siber Camgöbeği */
    --neon-purple: #bc13fe;     /* Elektrik Mor */
    --text-main: #ffffff;
    --text-dim: #b0b0c0;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --glass-blur: blur(15px);
    --flow-gradient: linear-gradient(45deg, #00f3ff, #bc13fe);
    --font-heading: '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-deep);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    /* Hareketli Arka Plan */
    background: radial-gradient(circle at 10% 20%, rgba(188, 19, 254, 0.15) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(0, 243, 255, 0.15) 0%, transparent 40%),
                var(--bg-deep);
}

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@300;400;600&family=Orbitron:wght@500;700;900&display=swap');

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { width: 100%; height: auto; display: block; border-radius: 8px; }

/* --- HEADER --- */
header {
    background: rgba(5, 5, 16, 0.8);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid rgba(0, 243, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 20px 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-heading);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-main);
    text-shadow: 0 0 10px var(--neon-cyan);
}
.logo span { color: var(--neon-purple); }

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

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

.nav-links a:hover, .nav-links a.active {
    color: var(--neon-cyan);
    text-shadow: 0 0 8px var(--neon-cyan);
}

/* Cyber Underline Effect */
.nav-links a::before {
    content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px;
    background: var(--flow-gradient); transition: 0.3s ease;
}
.nav-links a:hover::before { width: 100%; }

.burger { display: none; cursor: pointer; color: var(--neon-cyan); font-size: 1.5rem; }

/* --- 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: 30px; }

/* --- COMPONENTS (CYBER) --- */
.cyber-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    padding: 30px;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s, border-color 0.3s;
}

/* Neon Border Glow on Hover */
.cyber-card:hover {
    transform: translateY(-5px);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.2);
}

.btn {
    display: inline-block;
    padding: 12px 35px;
    background: transparent;
    color: var(--neon-cyan);
    border: 2px solid var(--neon-cyan);
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: 0.3s;
}

.btn::before {
    content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
    background: var(--neon-cyan);
    transition: 0.3s;
    z-index: -1;
}

.btn:hover {
    color: var(--bg-deep);
    box-shadow: 0 0 30px var(--neon-cyan);
}
.btn:hover::before { left: 0; }

.icon-box svg { 
    width: 45px; height: 45px; 
    fill: var(--neon-purple); 
    margin-bottom: 20px; 
    filter: drop-shadow(0 0 5px var(--neon-purple));
}

/* --- TYPOGRAPHY --- */
h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--text-main);
    margin-bottom: 20px;
    line-height: 1.1;
    text-transform: uppercase;
}

h1 { font-size: 3.5rem; letter-spacing: 2px; }
h2 { 
    font-size: 2.5rem; 
    text-align: center; 
    background: var(--flow-gradient); 
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent;
}
p { color: var(--text-dim); margin-bottom: 25px; font-size: 1.1rem; }

/* --- HERO --- */
.hero {
    position: relative;
    padding: 100px 20px;
    border-bottom: 1px solid rgba(188, 19, 254, 0.2);
}

/* --- FORMS --- */
.form-group { margin-bottom: 25px; }
label { display: block; margin-bottom: 8px; font-family: var(--font-heading); color: var(--neon-cyan); letter-spacing: 1px; }
input, textarea, select {
    width: 100%;
    padding: 15px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--neon-purple);
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 1rem;
}
input:focus, textarea:focus { 
    outline: none; 
    border-color: var(--neon-cyan); 
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.3);
}

/* --- FOOTER --- */
footer {
    background: #020205;
    border-top: 1px solid var(--neon-cyan);
    padding: 60px 0 20px;
    margin-top: auto;
    position: relative;
}

/* Footer Glow Line */
footer::before {
    content: ''; position: absolute; top: -1px; left: 0; width: 100%; height: 1px;
    box-shadow: 0 0 20px var(--neon-cyan);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.footer-col h4 { color: var(--neon-purple); margin-bottom: 20px; font-family: var(--font-heading); letter-spacing: 1px; }
.footer-col a { display: block; margin-bottom: 10px; color: var(--text-dim); }
.footer-col a:hover { color: var(--neon-cyan); text-shadow: 0 0 5px var(--neon-cyan); }

.tr-phone {
    font-family: var(--font-heading);
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute; top: 100%; left: 0; width: 100%;
        background: rgba(5, 5, 16, 0.95);
        border-bottom: 1px solid var(--neon-cyan);
        flex-direction: column; padding: 30px; text-align: center;
    }
    .nav-links.active { display: flex; }
    .burger { display: block; }
    
    .grid-2 { grid-template-columns: 1fr; }
    h1 { font-size: 2.5rem; text-align: center; }
    .hero p { text-align: center; }
    .hero .btn { display: table; margin: 0 auto; }
    
    .footer-content { flex-direction: column; text-align: center; }
    .tr-phone { justify-content: center; }
}