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

body {
    font-family: 'Courier New', monospace;
    background: #0a0a0a;
    color: #00ff00;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    /* Deshabilitar selección de texto */
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    /* Deshabilitar arrastrar */
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
}

/* Prevenir selección de texto en todos los elementos */
* {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Permitir selección solo en inputs */
input, textarea {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

/* Efecto Matrix de fondo */
.matrix-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #001100 25%, transparent 25%),
                linear-gradient(-45deg, #001100 25%, transparent 25%),
                linear-gradient(45deg, transparent 75%, #001100 75%),
                linear-gradient(-45deg, transparent 75%, #001100 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    opacity: 0.1;
    animation: matrix-move 20s linear infinite;
    z-index: -1;
}

@keyframes matrix-move {
    0% { transform: translateY(0); }
    100% { transform: translateY(20px); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    text-align: center;
    padding: 40px 0;
    background: linear-gradient(135deg, #001a00, #003300);
    border-bottom: 2px solid #00ff00;
    box-shadow: 0 4px 20px rgba(0, 255, 0, 0.3);
}

.header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    text-shadow: 0 0 20px #00ff00;
    animation: glow 2s ease-in-out infinite alternate;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.8;
    color: #66ff66;
}

@keyframes glow {
    from { text-shadow: 0 0 20px #00ff00; }
    to { text-shadow: 0 0 30px #00ff00, 0 0 40px #00ff00; }
}

/* Grid Layout */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 40px 0;
}

/* Cards */
.card {
    background: linear-gradient(135deg, #001a00, #002200);
    border: 1px solid #00ff00;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 8px 25px rgba(0, 255, 0, 0.2);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00ff00, transparent);
    animation: scan 3s linear infinite;
}

@keyframes scan {
    0% { left: -100%; }
    100% { left: 100%; }
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0, 255, 0, 0.4);
    border-color: #66ff66;
}

.card h2 {
    margin-bottom: 20px;
    color: #66ff66;
    font-size: 1.4rem;
}

/* Info Panel */
.info-panel {
    grid-column: span 2;
}

#client-info {
    background: #000;
    padding: 15px;
    border-radius: 5px;
    border: 1px solid #333;
    font-family: monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

.info-item {
    margin-bottom: 8px;
    padding: 5px;
    background: #001100;
    border-left: 3px solid #00ff00;
    padding-left: 10px;
}

.loading {
    text-align: center;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Login Panel */
.input-group {
    position: relative;
    margin-bottom: 20px;
}

.input-group i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #00ff00;
}

.input-group input {
    width: 100%;
    padding: 12px 45px;
    background: #000;
    border: 1px solid #333;
    border-radius: 5px;
    color: #00ff00;
    font-family: monospace;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: #00ff00;
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.3);
}

.btn-hack {
    width: 100%;
    padding: 15px;
    background: linear-gradient(45deg, #003300, #006600);
    border: 1px solid #00ff00;
    border-radius: 5px;
    color: #00ff00;
    font-family: monospace;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-weight: bold;
}

.btn-hack:hover {
    background: linear-gradient(45deg, #006600, #009900);
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
    transform: translateY(-2px);
}

#login-result {
    margin-top: 15px;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    font-weight: bold;
}

.success {
    background: rgba(0, 255, 0, 0.1);
    border: 1px solid #00ff00;
    color: #00ff00;
}

.error {
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid #ff0000;
    color: #ff6666;
}

/* Challenges Panel */
.challenge-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px;
    margin-bottom: 10px;
    background: #000;
    border: 1px solid #333;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.challenge-item:hover {
    border-color: #00ff00;
    background: #001100;
    transform: translateX(5px);
}

.challenge-item i {
    margin-right: 10px;
    font-size: 1.2rem;
}

.difficulty {
    padding: 4px 8px;
    border-radius: 3px;
    font-size: 0.8rem;
    font-weight: bold;
}

.difficulty.easy {
    background: rgba(0, 255, 0, 0.2);
    color: #00ff00;
}

.difficulty.medium {
    background: rgba(255, 255, 0, 0.2);
    color: #ffff00;
}

.difficulty.hard {
    background: rgba(255, 0, 0, 0.2);
    color: #ff6666;
}

/* Stats Panel */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

.stat-item {
    text-align: center;
    padding: 15px;
    background: #000;
    border: 1px solid #333;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    border-color: #00ff00;
    background: #001100;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: #00ff00;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    color: #66ff66;
}

/* Footer */
.footer {
    text-align: center;
    padding: 30px 0;
    background: #001100;
    border-top: 1px solid #00ff00;
    margin-top: 40px;
}

.footer p {
    margin-bottom: 5px;
    opacity: 0.7;
}

/* Estilos para alertas de seguridad */
.security-alert-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.security-alert {
    background: linear-gradient(135deg, #330000, #660000);
    border: 2px solid #ff0000;
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    color: #ffffff;
    font-family: monospace;
    max-width: 500px;
    box-shadow: 0 0 50px rgba(255, 0, 0, 0.7);
    animation: alertPulse 2s ease-in-out infinite;
}

@keyframes alertPulse {
    0%, 100% { 
        box-shadow: 0 0 50px rgba(255, 0, 0, 0.7);
        transform: scale(1);
    }
    50% { 
        box-shadow: 0 0 80px rgba(255, 0, 0, 0.9);
        transform: scale(1.02);
    }
}

.alert-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: shake 0.5s ease-in-out infinite;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.alert-message {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #ff6666;
    font-weight: bold;
}

.alert-subtext {
    font-size: 1rem;
    margin-bottom: 25px;
    opacity: 0.9;
    color: #ffcccc;
}

.alert-button {
    background: linear-gradient(45deg, #ff0000, #cc0000);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    cursor: pointer;
    font-family: monospace;
    font-size: 1.1rem;
    font-weight: bold;
    transition: all 0.3s ease;
    text-transform: uppercase;
}

.alert-button:hover {
    background: linear-gradient(45deg, #cc0000, #990000);
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(255, 0, 0, 0.5);
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .info-panel {
        grid-column: span 1;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .security-alert {
        margin: 20px;
        padding: 30px 20px;
    }
}

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

.card {
    animation: fadeInUp 0.6s ease forwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }

/* Prevenir zoom */
body {
    zoom: 1;
    -moz-transform: scale(1);
    -webkit-transform: scale(1);
    transform: scale(1);
}

/* Deshabilitar scroll horizontal */
html, body {
    overflow-x: hidden;
}

/* Cursor personalizado para elementos no seleccionables */
* {
    cursor: default;
}

a, button, .challenge-item, .btn-hack {
    cursor: pointer;
}