:root {
    --neon-green: #00ff66;
    --dark-bg: #050505;
    --terminal-black: #0d0d0d;
    --font-main: 'Courier New', Courier, monospace;
}

* { box-sizing: border-box; }

body {
    background-color: var(--dark-bg);
    color: var(--neon-green);
    font-family: var(--font-main);
    margin: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* --- BOOT --- */
#boot-screen {
    position: fixed;
    inset: 0;
    background: black;
    padding: 2rem;
    z-index: 1000;
}

.boot-line { margin: 5px 0; font-size: 1.1rem; }

/* --- LAYOUT RESPONSIVO --- */
.desktop {
    display: flex;
    flex-direction: row; /* Lado a lado no Desktop */
    gap: 20px;
    width: 95%;
    max-width: 1200px;
    padding: 20px;
}

/* Mobile: Empilha a barra lateral no topo */
@media (max-width: 768px) {
    .desktop {
        flex-direction: column;
        align-items: center;
        height: auto;
        overflow-y: auto;
    }
    
    .sidebar { width: 100%; }
    
    .nav-button {
        transform: none !important; /* Remove inclinação no mobile para facilitar o toque */
    }
}

/* --- SIDEBAR --- */
.sidebar {
    flex: 0 0 220px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.menu-header {
    border: 2px solid var(--neon-green);
    border-radius: 12px;
    padding: 15px;
    text-align: center;
    background: rgba(0, 255, 102, 0.05);
}

.menu-header h2 { font-size: 1rem; margin: 0; }

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.nav-button {
    background: var(--terminal-black);
    color: var(--neon-green);
    border: 2px solid var(--neon-green);
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
    transform: perspective(500px) rotateY(-15deg);
}

.nav-button:hover, .nav-button.active {
    background: var(--neon-green);
    color: black;
    box-shadow: 0 0 15px var(--neon-green);
}

/* --- TERMINAL --- */
.terminal-window {
    flex: 1;
    background: var(--terminal-black);
    border: 2px solid var(--neon-green);
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.terminal-header {
    padding: 10px;
    background: rgba(0, 255, 102, 0.1);
    border-bottom: 2px solid var(--neon-green);
}

.terminal-content {
    padding: 2rem;
    flex-grow: 1;
}

.terminal-footer {
    padding: 5px 15px;
    font-size: 0.8rem;
    border-top: 1px solid rgba(0, 255, 102, 0.2);
}

.cursor {
    display: inline-block;
    width: 8px;
    height: 15px;
    background: var(--neon-green);
    animation: blink 1s infinite;
}

.matrix-link {
    display: block;
    color: var(--matrix-green); /* Verde Matrix */
    text-decoration: none;
    margin: 10px 0;
    padding: 5px;
    border: 1px solid transparent;
    transition: 0.3s;
}

.matrix-link:hover {
    background: var(--matrix-green);
    color: black;
    box-shadow: 0 0 15px var(--matrix-green);
}

@keyframes blink { 50% { opacity: 0; } }