/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

/* Animaciones comunes */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

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

/* Emoji animado */
.emoji {
    font-size: 3em;
    animation: bounce 2s infinite;
    display: inline-block;
    margin: 20px 0;
}

/* Botones de navegación superior */
.top-navigation {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    gap: 10px;
    z-index: 100;
}

.nav-link {
    background: white;
    color: #764ba2;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.nav-link:hover {
    background: #f8f9ff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Títulos comunes */
h1 {
    color: #764ba2;
    font-size: 2.5em;
    margin-bottom: 30px;
    text-align: center;
    animation: fadeInDown 0.8s ease;
}

h2 {
    color: #667eea;
    font-size: 1.8em;
    margin-bottom: 20px;
    border-bottom: 3px solid #667eea;
    padding-bottom: 10px;
}

h3 {
    color: #764ba2;
    font-size: 1.4em;
    margin: 20px 0 15px 0;
}

/* Botones comunes */
button {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
    font-weight: bold;
}

button:hover {
    background: #764ba2;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(118, 75, 162, 0.4);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Estilos de texto destacado */
.highlight {
    background: linear-gradient(to right, #f093fb 0%, #f5576c 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: bold;
    font-size: 1.2em;
}