body {
    margin: 0;
    font-family: "Orbitron", sans-serif;
    background: #0e0e0e;
    color: #00ffea;
    overflow-x: hidden;
    letter-spacing: 1.6px;
    line-height: 160%;
}

/* Mobile restriction overlay */
.mobile-restriction-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(14, 14, 14, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    padding: 2rem;
    text-align: center;
}

.mobile-restriction-content {
    max-width: 400px;
    animation: fadeInUp 0.6s ease-out;
}

.mobile-restriction-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, #00ffea, #00d1b6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 30px rgba(0, 255, 234, 0.4);
}

.mobile-restriction-icon svg {
    width: 40px;
    height: 40px;
    fill: #000;
}

.mobile-restriction-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #00ffea;
    margin-bottom: 1rem;
    text-shadow: 0 0 10px rgba(0, 255, 234, 0.3);
}

.mobile-restriction-message {
    font-size: 1rem;
    color: #b0b0b0;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.mobile-restriction-suggestion {
    font-size: 0.9rem;
    color: #707070;
    font-style: italic;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Show overlay on mobile and tablet portrait */
@media screen and (max-width: 1024px) and (orientation: portrait) {
    .mobile-restriction-overlay {
        display: flex;
    }
    
    body > *:not(.mobile-restriction-overlay) {
        filter: blur(5px);
        pointer-events: none;
    }
}

@media screen and (max-width: 768px) {
    .mobile-restriction-overlay {
        display: flex;
    }
    
    body > *:not(.mobile-restriction-overlay) {
        filter: blur(5px);
        pointer-events: none;
    }
}

#hero {
    background: linear-gradient(135deg, #00ffea, #000);
    height: 100vh;
    display: flex;
    color: #000;
}

.side_panel {
    background-color: black;
    border: 1.6px solid #00ffea;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
    width: 15%;
    margin: 5px;
    margin-right: 0px;
    overflow-y: auto;
}

.screen {
    background-color: black;
    border: 1.6px solid #00ffea;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
    width: 85%;
    margin: 5px;
    overflow-y: auto;
    color: white;
}

.title-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.title-item {
    padding: 12px 15px;
    margin-bottom: 10px;
    background-color: #333;
    color: white;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
    position: relative;
}

.sub-list {
    display: none;
    list-style: none;
    margin-left: 4px;
    padding: 6px 6px;
    border-radius: 4px;
}

.sub-list.visible {
    display: block;
}

.sub-item {
    cursor: pointer;
    font-size: 12px;
    margin: 4px 0;
    padding: 4px 10px;
    border-radius: 4px;
}

.sub-item:hover {
    background-color: #00ffea;
}

.title-item.active,
.sub-item.active {
    color: black;
    background-color: #00ffea;
    font-weight: bold;
}

.parent-item {
    position: relative;
    margin-bottom: 10px;
}

.guide {
    display: none;
}

.guide.active {
    display: block;
}

li {
    cursor: pointer;
}

p a {
    color: #00ffea;
    text-decoration: none;
    font: inherit;
}

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

pre code {
  display: flex;
  white-space: pre-wrap;
  margin: 0;
}