/* Blue Neon Professional Theme */

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #0a0f1c;
    color: #e6e6f0;
    line-height: 1.8;
}

header {
    background: #050a14;
    padding: 20px;
    text-align: center;
    border-bottom: 2px solid #00f0ff;
}

header img {
    height: 60px;
    margin-bottom: 10px;
}

nav a {
    color: #00f0ff;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}

nav a:hover {
    text-shadow: 0 0 10px #00f0ff;
}

.container {
    max-width: 1000px;
    margin: auto;
    padding: 40px 20px;
}

h1, h2, h3 {
    color: #00f0ff;
}

.block {
    background: #141528;
    border: 1px solid #2a2b40;
    border-radius: 14px;
    padding: 30px;
    margin-bottom: 40px;
}

code {
    background: #000;
    color: #00ffff;
    padding: 3px 7px;
    border-radius: 5px;
}

pre {
    background: #000;
    color: #00ffff;
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
}

ul li, ol li {
    margin-bottom: 10px;
}

img {
    max-width: 100%;
    border-radius: 12px;
    margin: 20px 0;
    border: 1px solid #333;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 20px;
    color: #9ca3af;
    font-size: 0.95rem;
    border-top: 2px solid #00f0ff;
}

footer a {
    color: #00f0ff;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Floating WhatsApp Button */
#whatsapp {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background: #25d366;
    color: #000;
    font-weight: 700;
    padding: 16px 24px;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
    z-index: 999;
    transition: all 0.3s ease;
}

#whatsapp:hover {
    background: #1ead52;
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(0,0,0,0.5);
    color: #000;
}