body {
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(45deg, #0a0a0a, #1a1a1a);
    font-family: 'Arial', sans-serif;
    color: #fff;
    overflow: hidden;
}

#juego {
    border: 3px solid #00ffff;
    border-radius: 10px;
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.7), 
                0 0 60px rgba(0, 255, 255, 0.3);
    background-color: rgba(0, 0, 0, 0.8);
}

#puntuacion {
    font-size: 28px;
    margin: 20px 0;
    text-shadow: 0 0 10px #00ffff, 0 0 20px #00ffff;
    font-weight: bold;
    letter-spacing: 2px;
}

#nivel {
    font-size: 24px;
    margin: 10px 0;
    text-shadow: 0 0 10px #00ffff, 0 0 20px #00ffff;
    font-weight: bold;
    letter-spacing: 2px;
}

#inicio {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: rgba(0, 0, 0, 0.9);
    padding: 30px;
    border-radius: 15px;
    border: 2px solid #00ffff;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
    z-index: 10;
    animation: pulsar 2s infinite;
}

@keyframes pulsar {
    0% { box-shadow: 0 0 20px rgba(0, 255, 255, 0.5); }
    50% { box-shadow: 0 0 40px rgba(0, 255, 255, 0.8); }
    100% { box-shadow: 0 0 20px rgba(0, 255, 255, 0.5); }
}

button {
    background: linear-gradient(45deg, #00ffff, #00cccc);
    border: none;
    padding: 12px 25px;
    color: white;
    font-size: 18px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 1px;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
    margin: 5px;
}

button:hover {
    background: linear-gradient(45deg, #00cccc, #00ffff);
    transform: scale(1.05);
    box-shadow: 0 0 25px rgba(0, 255, 255, 0.8);
}

h1 {
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff, 0 0 20px #00ffff;
    margin-bottom: 20px;
}

p {
    color: #aaa;
    margin-bottom: 20px;
}

#controles {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

#pausa {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 5;
}

#opciones {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 5;
}

#panel-opciones {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    padding: 20px;
    border-radius: 15px;
    border: 2px solid #00ffff;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
    z-index: 15;
    display: none;
    max-height: 80vh;
    overflow-y: auto;
    min-width: 300px;
}

.panel-botones {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.modo-titulo {
    color: #00ffff;
    text-align: center;
    margin-bottom: 15px;
    font-size: 24px;
    text-shadow: 0 0 10px #00ffff;
}

.tiempo-extra {
    position: absolute;
    color: #00ff00;
    font-size: 20px;
    font-weight: bold;
    text-shadow: 0 0 10px #00ff00;
    animation: flotar-arriba 1s forwards;
    z-index: 1000;
}

@keyframes flotar-arriba {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(-30px); opacity: 0; }
}

.opcion {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 10px 0;
    padding: 5px;
    border-bottom: 1px solid rgba(0, 255, 255, 0.3);
}

.personaje-seleccion {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 10px 0;
}

.personaje-option {
    width: 60px;
    height: 60px;
    border: 2px solid #00ffff;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    background-size: cover;
    background-position: center;
}

.personaje-option:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.8);
}

.personaje-option.seleccionado {
    border-color: #ff0000;
    box-shadow: 0 0 20px rgba(255, 0, 0, 0.8);
}

.modo-juego {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 10px 0;
}

.modo-option {
    padding: 10px;
    border: 1px solid #00ffff;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modo-option:hover {
    background: rgba(0, 255, 255, 0.2);
}

.modo-option.seleccionado {
    background: rgba(0, 255, 255, 0.4);
    border-color: #ff0000;
}

#enemigos {
    position: absolute;
    pointer-events: none;
    z-index: 3;
}

.enemigo {
    position: absolute;
    width: 20px;
    height: 20px;
    background: #ff0000;
    border-radius: 50%;
    box-shadow: 0 0 10px #ff0000;
}

#efecto-comida {
    position: absolute;
    pointer-events: none;
    z-index: 4;
    display: none;
}

#mensaje-nivel {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 36px;
    font-weight: bold;
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff, 0 0 20px #00ffff;
    z-index: 6;
    display: none;
    animation: aparecer-desvanecer 2s forwards;
}

@keyframes aparecer-desvanecer {
    0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.2); }
    100% { opacity: 0; transform: translate(-50%, -50%) scale(1); }
}

#musica-control {
    position: absolute;
    bottom: 20px;
    right: 20px;
    z-index: 5;
    background: rgba(0, 0, 0, 0.7);
    padding: 10px;
    border-radius: 10px;
    border: 1px solid #00ffff;
}

#musica-control button {
    margin: 0;
    padding: 5px 10px;
    font-size: 14px;
}

.explosion {
    position: absolute;
    pointer-events: none;
    z-index: 4;
    animation: explotar 0.5s forwards;
}

@keyframes explotar {
    0% { transform: scale(0.5); opacity: 1; }
    100% { transform: scale(2); opacity: 0; }
}

.bomba {
    position: absolute;
    width: 20px;
    height: 20px;
    background: #ff6600;
    border-radius: 50%;
    box-shadow: 0 0 15px #ff6600;
    animation: pulsar-bomba 1s infinite;
}

@keyframes pulsar-bomba {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}