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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f6f8fb;
    color: #0b1220;
}

/* CONTAINER */
.container {
    width: min(1200px, 92%);
    margin: 0 auto;
}

/* HEADER */
.site-header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 22px;
    font-weight: 700;
    color: #0b1220;
}

/* MENU */
.main-nav {
    display: flex;
    gap: 20px;
}

.main-nav a {
    color: #333;
    font-weight: 500;
    transition: 0.3s;
}

.main-nav a:hover {
    color: #00ff88;
}

/* HERO */
.hero {
    padding: 100px 0;
    position: relative;
}

/* NEON ARKA EFEKT */
.hero::before {
    content: "";
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #00ff88 0%, transparent 70%);
    filter: blur(120px);
    top: -100px;
    left: -100px;
    opacity: 0.4;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 30px;
    align-items: center;
}

/* GLASS CARD */
.glass-card {
    background: rgba(255,255,255,0.55);
    backdrop-filter: blur(18px);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(0,255,136,0.2);
    box-shadow:
        0 10px 40px rgba(0,0,0,0.08),
        0 0 20px rgba(0,255,136,0.15);
    transition: 0.4s;
}

.glass-card:hover {
    transform: translateY(-6px);
    box-shadow:
        0 20px 60px rgba(0,0,0,0.12),
        0 0 40px rgba(0,255,136,0.35);
}

/* HERO TEXT */
.hero h1 {
    font-size: 48px;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero p {
    color: #555;
    margin-bottom: 20px;
}

/* BUTTON */
.btn {
    padding: 14px 24px;
    border-radius: 10px;
    font-weight: 700;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #00ff88, #00cc66);
    color: #000;
    box-shadow: 0 0 20px rgba(0,255,136,0.4);
}

.btn-primary:hover {
    transform: scale(1.05);
}

/* SECTION */
.section {
    padding: 80px 0;
}

/* GRID */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

/* SERVICE CARD */
.service-card {
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(12px);
    border-radius: 18px;
    padding: 25px;
    border: 1px solid rgba(0,255,136,0.15);
    transition: 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,255,136,0.2);
}

/* FOOTER */
.site-footer {
    background: #0b1220;
    color: #fff;
    padding: 60px 0;
}

.site-footer h3 {
    color: #00ff88;
    margin-bottom: 10px;
}

/* RESPONSIVE */
@media(max-width: 900px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 34px;
    }
}