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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: #000000;
    color: #ffffff;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    border-bottom: 1px solid #333333;
    padding: 0;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    padding: 1rem 2rem;
    gap: 2rem;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    margin-left: auto;
}

.nav-links a {
    text-decoration: none;
    color: #888888;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    font-weight: 500;
}

.nav-links a:hover {
    color: #ffffff;
    background-color: #111111;
}

main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-primary {
    background-color: #0070f3;
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #0051cc;
}

.btn-secondary {
    background-color: #333333;
    color: #ffffff;
}

.btn-secondary:hover {
    background-color: #444444;
}

.btn-danger {
    background-color: #dc2626;
    color: #ffffff;
}

.btn-danger:hover {
    background-color: #b91c1c;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

.message {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    display: none;
}

.message.success {
    background-color: #065f46;
    border: 1px solid #10b981;
    color: #d1fae5;
}

.message.error {
    background-color: #7f1d1d;
    border: 1px solid #dc2626;
    color: #fecaca;
}

.message.show {
    display: block;
}

@media (max-width: 768px) {
    nav {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        margin-left: 0;
    }
    
    main {
        padding: 1rem;
    }
}