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

html, body {
    height: 100%;
    width: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* Header Styles */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    padding: 2rem 0;
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
    color: #4a5568;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.tagline {
    font-size: 1.2rem;
    color: #666;
    font-style: italic;
}

/* Main Content */
main {
    background: rgba(255, 255, 255, 0.98);
    border-radius: 20px;
    margin: 2rem auto;
    padding: 3rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

.hero-section h2 {
    font-size: 2.5rem;
    color: #2d3748;
    margin-bottom: 1rem;
}

.hero-section > p {
    font-size: 1.1rem;
    color: #4a5568;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section {
    margin: 2rem 0;
}

.quiz-button {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    color: white;
    text-decoration: none;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.2rem;
    box-shadow: 0 8px 25px rgba(238, 90, 36, 0.3);
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.quiz-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(238, 90, 36, 0.4);
    background: linear-gradient(135deg, #ee5a24, #ff6b6b);
}

.cta-text {
    margin-top: 1rem;
    color: #666;
    font-size: 0.9rem;
}

/* Latest Quizzes Section */
.latest-quizzes {
    margin: 3rem 0;
}

.latest-quizzes h2 {
    font-size: 2rem;
    color: #2d3748;
    margin-bottom: 1.5rem;
    text-align: center;
}

.table-container {
    overflow-x: auto;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.quiz-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 15px;
    overflow: hidden;
}

.quiz-table thead {
    background: linear-gradient(135deg, #4a5568, #2d3748);
    color: white;
}

.quiz-table th,
.quiz-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.quiz-table th {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
}

.quiz-table tbody tr:hover {
    background: #f7fafc;
    transform: scale(1.01);
    transition: all 0.2s ease;
}

.quiz-table tbody tr:nth-child(even) {
    background: #f8f9fa;
}

.difficulty {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty.easy {
    background: #c6f6d5;
    color: #22543d;
}

.difficulty.medium {
    background: #fef5e7;
    color: #c05621;
}

.difficulty.hard {
    background: #fed7d7;
    color: #c53030;
}

/* Content Section */
.content-section {
    margin: 3rem 0;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.content-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.content-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.content-card h3 {
    color: #2d3748;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.content-card p {
    color: #4a5568;
    line-height: 1.7;
}

.content-card ul {
    color: #4a5568;
    margin-left: 1.5rem;
}

.content-card li {
    margin-bottom: 0.5rem;
}

/* Featured Section */
.featured-section {
    margin: 3rem 0;
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    color: white;
}

.featured-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.featured-section p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.stat-item h4 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Footer */
footer {
    background: rgba(45, 55, 72, 0.95);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
}

footer p {
    margin-bottom: 0.5rem;
}

footer a {
    color: #fbb6ce;
    text-decoration: none;
    font-weight: 600;
}

footer a:hover {
    color: #f687b3;
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    .hero-section h2 {
        font-size: 1.8rem;
    }
    
    main {
        margin: 1rem;
        padding: 1.5rem;
    }
    
    .quiz-table th,
    .quiz-table td {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .quiz-button {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}