:root {
    --bg-color: #0f172a;
    /* slate-900 */
    --card-bg: #1e293b;
    /* slate-800 */
    --border-color: #334155;
    /* slate-700 */
    --text-primary: #f1f5f9;
    /* slate-100 */
    --text-secondary: #94a3b8;
    /* slate-400 */
    --accent-color: #22d3ee;
    /* cyan-400 */
    --accent-hover: #06b6d4;
    /* cyan-500 */
    }

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 6rem;
  /* Espaço para a nav fixa */
    }

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: "Inter", sans-serif;
    line-height: 1.7;
    }

.layout-wrapper {
    display: flex;
    flex-direction: row;
    gap: 2rem;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    }

.course-nav {
    width: 220px;
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 1rem;
    position: sticky;
    top: 1rem;
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

.course-nav ul {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    list-style: none;
    }

.course-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    }

.course-nav a:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
    }

.course-container {
    flex: 1;
    }

.course-header {
    text-align: center;
    margin-bottom: 3rem;
    }

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    background-color: var(--accent-color);
    color: var(--bg-color);
    border: none;
    cursor: pointer;
    }

.btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    }

.slide {
    background-color: var(--card-bg);
    border-radius: 16px;
    margin-bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--border-color);
    }

.slide-header {
    background-color: #27364d;
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    }

.slide-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    }

.slide-icon {
    color: var(--accent-color);
    }

.slide-content {
    padding: 2rem;
    }

.slide-content h3 {
    font-size: 1.1rem;
    color: var(--accent-color);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    }

.slide-content p,
    .slide-content li {
    color: var(--text-secondary);
    }

.slide-content ul {
    list-style-position: inside;
    padding-left: 0.5rem;
    }

.slide-content li + li {
    margin-top: 0.5rem;
    }

    /* Evaluation Section */
#avaliacao .slide-content {
    padding: 2rem;
    }

.quiz-question {
    margin-bottom: 1.5rem;
    }

.quiz-question p {
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    }

.quiz-options label {
    display: block;
    background-color: #27364d;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    border: 2px solid transparent;
    }

.quiz-options label:hover {
    background-color: #334155;
    }

.quiz-options input[type="radio"] {
    display: none;
    }

    /* Feedback styles */
.quiz-options label.correct {
    background-color: rgba(34, 197, 94, 0.2);
    border-color: #22c55e;
    color: var(--text-primary);
    }

.quiz-options label.incorrect {
    background-color: rgba(239, 68, 68, 0.2);
    border-color: #ef4444;
    color: var(--text-primary);
    }

#quiz-results {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    display: none;
    /* Hidden by default */
    transition: all 0.3s ease;
    }

.course-footer {
    text-align: center;
    margin-top: 4rem;
    }

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    background-color: var(--accent-color);
    color: var(--bg-color);
    border: none;
    cursor: pointer;
    }

.btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    }

.social-links {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    }

.social-links a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
    }

.social-links a:hover {
    color: var(--accent-color);
    }

.social-links svg {
    width: 28px;
    height: 28px;
    }

    /* Responsive adjustments */
@media (max-width: 768px) {
    .layout-wrapper {
        flex-direction: column;
        padding: 1rem;
    }

.course-nav {
        width: 100%;
        position: static;
        margin-bottom: 2rem;
    }

.course-nav ul {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

.course-nav a {
        padding: 0.5rem 0.75rem;
    }

.course-header h1 {
        font-size: 1.8rem;
    }

.slide-header h2 {
        font-size: 1.3rem;
    }

.slide-content {
        padding: 1.5rem;
    }
    }

@media (max-width: 480px) {
    .layout-wrapper {
        padding: 0.5rem;
    }

.course-nav ul {
        gap: 0.5rem;
    }

.course-nav a {
        font-size: 0.9rem;
    }

.course-header h1 {
        font-size: 1.5rem;
    }

.slide-header {
        padding: 1rem 1.5rem;
    }

.slide-header h2 {
        font-size: 1.1rem;
    }

.slide-content {
        padding: 1rem;
    }

.quiz-options label {
        padding: 0.6rem 0.8rem;
        font-size: 0.9rem;
    }
    }
#avaliacao {
            display: none;
    }