/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

/* Navigation */
nav {
    background: #333;
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: bold;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #ddd;
}

/* Hero section */
.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(to right, #2c3e50, #3498db);
    color: white;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
    margin: 0.5rem;
    cursor: pointer;
    border: none;
    transition: background-color 0.3s;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-secondary {
    background: #2c3e50;
    color: white;
}

.btn-secondary:hover {
    background: #2c3e50cc;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group textarea {
    height: 100px;
    resize: vertical;
}

/* Auth container */
.auth-container {
    max-width: 500px;
    margin: 2rem auto;
    padding: 2rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.auth-container h2 {
    text-align: center;
    margin-bottom: 2rem;
}

/* Dashboard */
.dashboard {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.dashboard-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Quiz cards */
.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.quiz-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.quiz-card h3 {
    margin-bottom: 1rem;
}

/* Messages */
.error-message,
.success-message {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.error-message {
    background: #ff6b6b;
    color: white;
}

.success-message {
    background: #51cf66;
    color: white;
}

/* Create Quiz Form */
.create-quiz {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.question-block {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.answers-block {
    margin-top: 1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background: #333;
    color: white;
    margin-top: 2rem;
}

/* Features section */
.features {
    padding: 4rem 2rem;
    background: white;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 8px;
    text-align: center;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

/* Responsive design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        text-align: center;
    }
    
    nav ul {
        margin-top: 1rem;
        flex-direction: column;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .dashboard-grid,
    .quiz-grid,
    .feature-grid {
        grid-template-columns: 1fr;
    }
}