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

:root {
    --primary-color: #1a4d2e;
    --secondary-color: #2d5f3f;
    --accent-color: #f4a460;
    --gold: #ffd700;
    --dark-bg: #0f1419;
    --card-bg: #1a2332;
    --text-light: #ffffff;
    --text-gray: #b8c5d6;
    --success: #4caf50;
    --danger: #f44336;
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0f1419 0%, #1a2332 100%);
    color: var(--text-light);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px var(--shadow);
}

.logo {
    font-size: 4rem;
    margin-bottom: 10px;
    animation: bounce 2s infinite;
}

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

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--gold);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.tagline {
    color: var(--text-gray);
    font-size: 1.1rem;
}

/* Navigation */
.navigation {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.nav-btn {
    background: var(--card-bg);
    color: var(--text-light);
    border: 2px solid transparent;
    padding: 12px 30px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow);
}

.nav-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-color: var(--gold);
}

/* Sections */
.section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Home Section */
.hero {
    text-align: center;
    padding: 60px 20px;
    background: var(--card-bg);
    border-radius: 20px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px var(--shadow);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--gold);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
    box-shadow: 0 5px 15px var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-light);
    border: 2px solid var(--accent-color);
}

.btn-secondary:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.stat-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.stat-card:hover {
    transform: translateY(-10px);
    border-color: var(--gold);
    box-shadow: 0 10px 30px var(--shadow);
}

.stat-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--gold);
    margin-bottom: 10px;
}

.stat-card p {
    color: var(--text-gray);
    font-size: 1.1rem;
}

/* Learn Section */
.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.topic-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.topic-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 30px var(--shadow);
}

.topic-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.topic-card h3 {
    color: var(--gold);
    margin-bottom: 10px;
    font-size: 1.5rem;
}

.topic-card p {
    color: var(--text-gray);
}

.topic-detail {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    margin-top: 30px;
    box-shadow: 0 10px 30px var(--shadow);
}

.back-btn {
    background: var(--secondary-color);
    color: var(--text-light);
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1rem;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: var(--primary-color);
    transform: translateX(-5px);
}

#topic-content h3 {
    color: var(--gold);
    font-size: 2rem;
    margin-bottom: 20px;
}

#topic-content p {
    color: var(--text-gray);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

#topic-content ul {
    list-style: none;
    padding: 0;
}

#topic-content li {
    padding: 10px 0;
    color: var(--text-gray);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#topic-content li:before {
    content: "🏈 ";
    margin-right: 10px;
}

/* Quiz Section */
.quiz-start, .quiz-container, .quiz-results {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px var(--shadow);
}

.quiz-start h2 {
    color: var(--gold);
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-align: center;
}

.quiz-start p {
    color: var(--text-gray);
    font-size: 1.2rem;
    text-align: center;
    margin-bottom: 30px;
}

.quiz-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 30px 0;
    flex-wrap: wrap;
}

.info-item {
    text-align: center;
}

.info-label {
    display: block;
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.info-value {
    display: block;
    color: var(--gold);
    font-size: 2rem;
    font-weight: bold;
}

.quiz-start .btn {
    display: block;
    margin: 0 auto;
}

.quiz-header {
    margin-bottom: 30px;
}

.quiz-progress {
    margin-bottom: 20px;
}

#question-number {
    display: block;
    color: var(--text-gray);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--gold));
    transition: width 0.3s ease;
    width: 0%;
}

.question-container {
    margin-bottom: 30px;
}

#question-text {
    color: var(--text-light);
    font-size: 1.5rem;
    margin-bottom: 30px;
}

.answers-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.answer-btn {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-light);
    border: 2px solid rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 15px;
    text-align: left;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.answer-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-color);
    transform: translateX(10px);
}

.answer-btn.selected {
    background: var(--secondary-color);
    border-color: var(--gold);
}

.answer-btn.correct {
    background: var(--success);
    border-color: var(--success);
}

.answer-btn.incorrect {
    background: var(--danger);
    border-color: var(--danger);
}

.quiz-navigation {
    text-align: right;
}

.quiz-navigation .btn {
    padding: 12px 30px;
}

.quiz-navigation .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Results */
.results-card {
    text-align: center;
}

.results-icon {
    font-size: 5rem;
    margin-bottom: 20px;
}

.results-card h2 {
    color: var(--gold);
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.score-display {
    font-size: 3rem;
    font-weight: bold;
    margin: 30px 0;
}

.score-display.pass {
    color: var(--success);
}

.score-display.fail {
    color: var(--danger);
}

.results-message {
    color: var(--text-gray);
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.results-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .hero h2 {
        font-size: 1.8rem;
    }

    .topics-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    #question-text {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    header {
        padding: 30px 15px;
    }

    .logo {
        font-size: 3rem;
    }

    .nav-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}