/* --- Temel Ayarlar ve Değişkenler --- */
:root {
    --bg-dark: #0a0e17;
    --bg-secondary: #111625;
    --neon-blue: #00f3ff;
    --neon-purple: #bc13fe;
    --text-main: #e0e6ed;
    --text-muted: #94a3b8;
    --glass-bg: rgba(17, 22, 37, 0.7);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* --- Arka Plan Canvas --- */
#canvas-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at center, #1b2735 0%, #090a0f 100%);
}

/* --- Header / Navigasyon --- */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 243, 255, 0.1);
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: #fff;
    text-transform: uppercase;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i, .logo span { color: var(--neon-blue); }

.nav-container { display: flex; align-items: center; gap: 40px; }

nav ul { display: flex; gap: 30px; list-style: none; }

nav a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.95rem;
    transition: 0.3s;
    position: relative;
    cursor: pointer;
}

nav a:hover, nav a.active { color: var(--neon-blue); }
nav a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--neon-blue);
    box-shadow: 0 0 10px var(--neon-blue);
}

/* Dil Seçici */
.lang-switch {
    display: flex;
    gap: 10px;
    border-left: 1px solid rgba(255,255,255,0.2);
    padding-left: 20px;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
    font-size: 0.9rem;
}

.lang-btn:hover { color: #fff; }
.lang-btn.active { color: var(--neon-blue); text-shadow: 0 0 10px var(--neon-blue); }

.menu-toggle { display: none; color: #fff; font-size: 1.5rem; cursor: pointer; }

/* --- SAYFA YAPISI (Single Page Logic) --- */
.page-section {
    display: none;
    padding-top: 80px;
    min-height: 100vh;
    animation: fadeIn 0.5s ease-in-out;
}

.page-section.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Hero Section --- */
.hero {
    height: calc(100vh - 80px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 25px;
    font-weight: 800;
    background: linear-gradient(135deg, #fff 30%, var(--neon-blue) 70%, var(--neon-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(0, 243, 255, 0.2);
    max-width: 900px;
}

.hero p { font-size: 1.3rem; max-width: 700px; color: var(--text-muted); margin-bottom: 40px; }
.hero-btns { display: flex; gap: 20px; }

.btn {
    padding: 15px 40px;
    border-radius: 5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 0.9rem;
    border: none;
}

.btn-primary {
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
    color: #000;
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 0 30px rgba(0, 243, 255, 0.6);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: #fff;
}

.btn-outline:hover { border-color: var(--neon-blue); color: var(--neon-blue); }

/* --- Ortak Container --- */
.container { max-width: 1200px; margin: 0 auto; padding: 80px 20px; }

.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: 2.5rem; margin-bottom: 15px; color: #fff; }
.section-header .line { width: 80px; height: 4px; background: var(--neon-purple); margin: 0 auto; border-radius: 2px; box-shadow: 0 0 10px var(--neon-purple); }

/* --- Hizmet Kartları --- */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }

.service-card {
    background: var(--glass-bg); padding: 40px 30px; border-radius: 16px; border: 1px solid rgba(255, 255, 255, 0.05); transition: 0.4s; position: relative; overflow: hidden;
}

.service-card:hover { transform: translateY(-10px); border-color: rgba(0, 243, 255, 0.3); box-shadow: 0 20px 40px rgba(0,0,0,0.4); }

.icon-box {
    width: 60px; height: 60px; background: rgba(255, 255, 255, 0.05); border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 25px; font-size: 1.8rem; color: var(--neon-blue); transition: 0.3s;
}

.service-card:hover .icon-box { background: var(--neon-blue); color: #000; box-shadow: 0 0 20px var(--neon-blue); }
.service-card h3 { font-size: 1.4rem; margin-bottom: 15px; color: #fff; }
.service-card p { font-size: 0.95rem; color: var(--text-muted); }

/* --- Portfolyo --- */
.portfolio-filters { display: flex; justify-content: center; gap: 15px; margin-bottom: 40px; flex-wrap: wrap; }
.filter-btn { background: transparent; border: 1px solid rgba(255,255,255,0.2); color: var(--text-muted); padding: 8px 20px; border-radius: 20px; cursor: pointer; transition: 0.3s; font-size: 0.9rem; }
.filter-btn:hover, .filter-btn.active { border-color: var(--neon-blue); color: var(--neon-blue); background: rgba(0, 243, 255, 0.05); }

.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 30px; }
.portfolio-item { background: var(--bg-secondary); border-radius: 12px; overflow: hidden; border: 1px solid rgba(255,255,255,0.05); transition: 0.4s; display: block; }
.portfolio-item:hover { transform: translateY(-5px); border-color: rgba(188, 19, 254, 0.5); box-shadow: 0 10px 30px rgba(0,0,0,0.5); }

.portfolio-img { width: 100%; height: 200px; background-color: #000; position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.portfolio-img img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.portfolio-item:hover .portfolio-img img { transform: scale(1.1); }

.portfolio-content { padding: 20px; }
.portfolio-cat { font-size: 0.75rem; color: var(--neon-blue); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; display: block; }
.portfolio-title { font-size: 1.1rem; color: #fff; margin-bottom: 8px; }
.portfolio-desc { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 15px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.portfolio-link { text-decoration: none; color: #fff; font-size: 0.85rem; display: flex; align-items: center; gap: 5px; transition: 0.3s; }
.portfolio-link:hover { color: var(--neon-purple); gap: 10px; }

/* --- Yaklaşımımız --- */
.approach-content { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.approach-text h3 { font-size: 2rem; color: #fff; margin-bottom: 20px; }
.approach-text p { margin-bottom: 20px; color: var(--text-muted); }

.approach-steps { display: flex; flex-direction: column; gap: 20px; }
.step-item { background: rgba(255,255,255,0.03); padding: 20px; border-left: 3px solid var(--neon-purple); border-radius: 0 10px 10px 0; transition: 0.3s; }
.step-item:hover { background: rgba(188, 19, 254, 0.1); padding-left: 30px; }
.step-item h4 { color: #fff; margin-bottom: 5px; }
.step-item p { font-size: 0.9rem; margin: 0; }

/* --- Contact & Footer --- */
.contact-mini { background: var(--bg-secondary); padding: 50px; border-radius: 10px; text-align: center; margin-top: 50px; border: 1px solid rgba(255,255,255,0.05); }
footer { text-align: center; padding: 30px; background: #05070a; color: var(--text-muted); font-size: 0.85rem; border-top: 1px solid rgba(255,255,255,0.05); }

@media (max-width: 768px) {
    header { padding: 20px; }
    .nav-container { display: none; }
    .hero h1 { font-size: 2.5rem; }
    .approach-content { grid-template-columns: 1fr; }
    .menu-toggle { display: block; }
}