* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: Arial, sans-serif;
}

body {
    background-color: #000;
    color: #eee;
    padding-top: 70px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    padding-bottom: 40px;
}

main {
    padding: 20px 30px;
    flex: 1;
}

.card {
    background-color: #1a1a1a;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 0 15px rgba(0,0,0,0.5);
}

.button {
    display: inline-block;
    padding: 10px 15px;
    background-color: #79b8ff;
    color: #000;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    transition: 0.15s;
}

.button:hover {
    background-color: #5590d3;
}

iframe {
    width: 100%;
    height: 500px;
    border: none;
    border-radius: 12px;
    pointer-events: auto;
    z-index: 1;
}

.item {
    display: block;
    background: #161616;
    padding: 10px 14px;
    margin: 6px 0;
    border-radius: 8px;
    color: #ddd;
    text-decoration: none;
    border: 1px solid #222;
    transition: 0.15s;
}

.item:hover {
    background: #222;
    border-color: #333;
}

.item.folder {
    color: #79b8ff;
}

.item.file {
    color: #c8c8c8;
}

.item.up {
    color: #ffd37a;
    background: #2a2000;
    border-color: #4a3f00;
}

.empty {
    color: #666;
    padding: 5px 0;
    font-size: 14px;
}

.back-btn {
    display: inline-block;
    padding: 10px 15px;
    background: #222;
    border-radius: 8px;
    color: white;
    text-decoration: none;
    margin-bottom: 20px;
    border: 1px solid #444;
}
.sim-container {
    margin-top: 20px;
    height: 0;
    overflow: hidden;
    transition: height 0.3s ease;
}

.sim-container iframe {
    height: 500px;
}
#openSim {
    margin-top: 15px;
}
.card h2 {
    font-size: 2em;
    margin-bottom: 10px;
}

.card h3 {
    font-size: 1.5em;
    margin-bottom: 8px;
}

.card ul, .card ol {
    padding-left: 20px;
    margin: 10px 0;
}

.card p, .card li {
    line-height: 1.6;
    color: #ccc;
}

.card em {
    color: #79b8ff;
}

.card li a {
    color: #79b8ff;
    text-decoration: none;
    transition: color 0.2s, text-shadow 0.2s;
}

.card li a:hover {
    color: #a0d8ff;
    text-shadow: 0 0 5px #79b8ff;
}

.hero,
.nas-embed,
.particle,
.status,
.speaker-test {
    text-align: center;
}

.speakers {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 20px auto;
}

.speaker {
    width: 80px;
    transition: opacity 0.2s;
}

.speaker.active {
    opacity: 0.6;
}

.button {
    margin-top: 15px;
    padding: 10px 20px;
    font-weight: bold;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    background-color: #79b8ff;
    color: #000;
    transition: 0.15s;
}

.button.disabled {
    background-color: #555;
    cursor: not-allowed;
    opacity: 0.7;
}

.site-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #1a1a1a;
    color: #eee;
    text-align: center;
    padding: 15px 10px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    border-top: 2px solid #444;
    z-index: 9999;
}

.site-footer .footer-content p {
    margin: 5px 0;
    font-size: 14px;
}

.site-footer .footer-links {
    margin-top: 5px;
}

.site-footer .footer-links a {
    color: #00aaff;
    text-decoration: none;
    margin: 0 5px;
    font-size: 13px;
    transition: color 0.3s;
}

.site-footer .footer-links a:hover {
    color: #ffaa00;
}