/* Medical & Professional Color Palette */
:root {
    --primary-blue: #2c3e50;
    --medical-blue: #3498db;
    --success-green: #27ae60;
    --error-red: #e74c3c;
    --bg-light: #f4f7f6;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-light);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 450px;
    text-align: center;
    border-top: 8px solid var(--medical-blue);
}

h1 {
    color: var(--primary-blue);
    font-size: 1.8rem;
    margin-bottom: 0;
}

.difficulty-box {
    margin: 25px 0;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
}

#diffLabel {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--medical-blue);
    margin: 10px 0;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--medical-blue);
}

button {
    background-color: var(--primary-blue);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
}

button:hover {
    background-color: #1a252f;
    transform: translateY(-2px);
}

#quiz-area {
    margin-top: 25px;
    padding: 15px;
    border-radius: 8px;
    font-style: italic;
    color: #666;
}

/* Classes for your future JS logic */
.congrats { color: var(--success-green); font-weight: bold; border: 2px solid var(--success-green); padding: 10px; }
.mockery { color: var(--error-red); font-weight: bold; border: 2px solid var(--error-red); padding: 10px; }