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

body {
    background-color: #ffffff;
    color: #e0ffff; /* Light cyan text */
    font-family: 'Open Sans', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    overflow-x: hidden;
}

h1, h2, h3 { font-family: 'Montserrat', sans-serif; text-transform: uppercase; letter-spacing: 1.5px; }

h1 { 
    color: #0ff; 
    font-size: 2.2rem; 
    margin-bottom: 15px; 
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.7), 0 0 20px rgba(0, 255, 255, 0.4); 
}

p {
    color: #aae5ff;
}

#start-screen p {
    color: #aae5ff !important;
}

h3 {
    color: #58a6ff !important;
}

strong {
    color: #0ff;
    text-shadow: 0 0 5px rgba(0, 255, 255, 0.5);
}

.container {
    background-color: rgba(0, 20, 40, 0.65);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 8px;
    padding: 40px;
    max-width: 800px;
    width: 100%;
    /* Hologram borders */
    border: 2px solid rgba(0, 255, 255, 0.4);
    box-shadow: 
        0 0 15px rgba(0, 255, 255, 0.2), 
        inset 0 0 20px rgba(0, 255, 255, 0.1);
    
    /* Float animation */
    animation: floatHologram 6s ease-in-out infinite, pulseGlow 4s infinite alternate;
}

@keyframes floatHologram {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
    100% { transform: translateY(0px); }
}

@keyframes pulseGlow {
    0% { box-shadow: 0 0 15px rgba(0, 255, 255, 0.2), inset 0 0 20px rgba(0, 255, 255, 0.1); border-color: rgba(0, 255, 255, 0.4); }
    100% { box-shadow: 0 0 25px rgba(0, 255, 255, 0.5), inset 0 0 40px rgba(0, 255, 255, 0.2); border-color: rgba(0, 255, 255, 0.8); }
}

.screen { display: none; text-align: center; }
.screen.active { display: block; animation: holographicGlitch 0.6s ease-out; }

@keyframes holographicGlitch {
    0% { opacity: 0; transform: scale(0.98) translateY(10px); filter: blur(4px); }
    50% { opacity: 0.8; filter: blur(1px); }
    100% { opacity: 1; transform: scale(1) translateY(0); filter: blur(0); }
}

/* Buttons */
.btn {
    padding: 12px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
    border: 1px solid rgba(0, 255, 255, 0.6);
    background: rgba(0, 45, 91, 0.4);
    color: #0ff;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 10px;
    display: inline-block;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 50%; height: 100%;
    background: linear-gradient(to right, transparent, rgba(0, 255, 255, 0.3), transparent);
    transform: skewX(-20deg);
    transition: all 0.5s ease;
}

.btn:hover::before {
    left: 200%;
}

.btn:hover {
    background: rgba(0, 255, 255, 0.2);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.6), inset 0 0 10px rgba(0, 255, 255, 0.4);
    text-shadow: 0 0 8px #0ff;
    transform: translateY(-2px);
}

.primary-btn { border-color: #0ff; box-shadow: 0 0 10px rgba(0, 255, 255, 0.3); }
.secondary-btn { border-color: #58a6ff; color: #58a6ff; box-shadow: 0 0 10px rgba(88, 166, 255, 0.3); }
.secondary-btn:hover { background: rgba(88, 166, 255, 0.2); box-shadow: 0 0 15px rgba(88, 166, 255, 0.6); color: #8fd0ff; border-color: #8fd0ff;}

.home-btn { border-color: rgba(255, 255, 255, 0.3); color: #fff; }
.home-btn:hover { background: rgba(255, 255, 255, 0.1); border-color: #fff; color: #fff; box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);}

/* Progress */
.progress-container {
    width: 100%;
    height: 8px;
    background-color: rgba(0, 45, 91, 0.5);
    border: 1px solid rgba(0, 255, 255, 0.3);
    border-radius: 4px;
    margin-bottom: 20px;
    overflow: hidden;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.5);
}

#progress-bar {
    height: 100%;
    background-color: #0ff;
    width: 0%;
    box-shadow: 0 0 10px #0ff, 0 0 20px #0ff;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.question-counter { color: #58a6ff; font-size: 1rem; margin-bottom: 20px; font-weight: 600; text-transform: uppercase; letter-spacing: 2px;}
.question-text { font-size: 1.6rem; margin-bottom: 40px; min-height: 100px; display: flex; align-items: center; justify-content: center; color: #e0ffff; text-shadow: 0 0 5px rgba(224, 255, 255, 0.5);}

/* Scale */
.likert-scale { margin-top: 20px; }
.scale-labels { display: flex; justify-content: space-between; margin-bottom: 20px; color: #58a6ff; font-size: 0.95rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px;}
.scale-buttons { display: flex; justify-content: space-between; gap: 12px; }

.scale-btn {
    flex: 1;
    aspect-ratio: 1;
    font-size: 1.3rem;
    font-weight: bold;
    font-family: 'Montserrat', sans-serif;
    border: 1px solid rgba(0, 255, 255, 0.3);
    background-color: rgba(0, 20, 40, 0.6);
    color: #aae5ff;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.scale-btn:hover { 
    background-color: rgba(0, 255, 255, 0.2); 
    border-color: #0ff; 
    color: #fff;
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 255, 255, 0.4), inset 0 0 10px rgba(0, 255, 255, 0.2);
    text-shadow: 0 0 5px #fff;
}

/* Results */
.profile-card { 
    background-color: rgba(0, 45, 91, 0.4); 
    padding: 25px; 
    border-radius: 6px; 
    margin: 25px 0; 
    border: 1px solid rgba(0, 255, 255, 0.3);
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5);
}

#profile-title { color: #0ff; font-size: 1.8rem; margin-bottom: 15px; text-shadow: 0 0 8px rgba(0, 255, 255, 0.6);}
#profile-desc { font-size: 1.1rem; line-height: 1.6; color: #e0ffff; }

.chart-container { 
    position: relative; 
    margin: 20px auto; 
    height: 350px; 
    width: 100%; 
    max-width: 550px;
    background: rgba(0, 20, 40, 0.5);
    border-radius: 6px;
    border: 1px solid rgba(0, 255, 255, 0.2);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    padding: 20px;
}

@media (max-width: 600px) {
    .scale-buttons { gap: 6px; }
    .scale-btn { font-size: 1.1rem; border-radius: 4px; }
    .container { padding: 25px 15px; }
    .question-text { font-size: 1.3rem; min-height: 80px; }
    h1 { font-size: 1.6rem; }
    .scale-labels { font-size: 0.7rem; }
    
    .home-logo-link {
        left: 0;
        right: 0;
        margin: 0 auto;
        width: 80px; /* Ancho de la imagen (aumentado 1/3) */
        top: 15px; /* Un poco más cerca del borde en móvil */
    }
}

/* Preloader */
#preloader {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: #000c18;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}

.spinner {
    width: 60px; height: 60px;
    border: 4px solid rgba(0, 255, 255, 0.2);
    border-top-color: #0ff;
    border-radius: 50%;
    animation: spin 1s linear infinite, pulseGlow 2s infinite alternate;
    margin-bottom: 20px;
}

@keyframes spin { 100% { transform: rotate(360deg); } }

#preloader p {
    color: #0ff;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    animation: pulse 1.5s infinite;
}

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

/* Home Logo */
.home-logo-link {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.home-logo-link:hover {
    transform: scale(1.1);
    filter: drop-shadow(0 0 15px rgba(0, 255, 255, 0.8));
}

.home-logo {
    width: 80px;
    height: auto;
    border-radius: 8px; /* Slight rounding to fit cyber theme */
}