:root {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent-color: #5b8fb9;
    --accent-hover: #4a7a9e;
    --border-color: #333333;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
}

.container {
    max-width: 650px;
    width: 100%;
}

#quiz-header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 1.8em;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

#subtitle {
    color: var(--text-secondary);
    font-size: 1.1em;
}

.card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    transition: opacity 0.3s ease;
}

.progress-text {
    color: var(--accent-color);
    font-size: 0.9em;
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.question-text {
    font-size: 1.25em;
    margin-bottom: 30px;
    font-weight: 500;
}

.option-btn {
    display: block;
    width: 100%;
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 16px 20px;
    margin-bottom: 12px;
    border-radius: 8px;
    font-size: 1em;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
    line-height: 1.5;
}

.option-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--text-secondary);
}

.primary-btn {
    display: block;
    width: 100%;
    background-color: var(--accent-color);
    color: #ffffff;
    border: none;
    padding: 16px;
    font-size: 1.1em;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.primary-btn:hover {
    background-color: var(--accent-hover);
}

.chart-wrapper {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin: 30px 0;
    height: 350px;
}

.result-title {
    color: var(--accent-color);
    font-size: 2.2em;
    text-align: center;
    margin: 20px 0;
}

/* Añadir al final de styles.css */
.description-box {
    background-color: rgba(0, 0, 0, 0.2);
    border-left: 4px solid var(--accent-color);
    padding: 20px 25px;
    margin: 25px 0;
    border-radius: 0 8px 8px 0;
    font-size: 1.05em;
    color: var(--text-primary);
    text-align: left;
    line-height: 1.7;
}

.description-box strong {
    color: var(--accent-color);
    font-size: 1.1em;
}

.description-box p {
    margin-top: 0;
    margin-bottom: 15px;
}

.description-box p:last-child {
    margin-bottom: 0;
}

/* Añadir al final de styles.css */
.secondary-btn {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    font-size: 0.95em;
    cursor: pointer;
    padding: 10px 15px;
    margin-top: 20px;
    transition: color 0.2s;
    font-family: inherit;
    display: inline-block;
}

.secondary-btn:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

.navigation-buttons {
    text-align: center;
    margin-top: 15px;
}