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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
}

.nav-container h1 a {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 1rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav-links a:hover {
    background-color: rgba(255,255,255,0.1);
}

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

.flash-messages {
    margin-bottom: 1rem;
}

.flash {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.flash-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.flash-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.flash-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.auth-form {
    max-width: 400px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

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

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0,123,255,0.25);
}

.errors {
    margin-top: 0.5rem;
}

.error {
    color: #dc3545;
    font-size: 0.875rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.btn-primary {
    background-color: #007bff;
    color: white;
}

.btn-primary:hover {
    background-color: #0056b3;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #545b62;
}

.welcome {
    text-align: center;
    background: white;
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.welcome h2 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.welcome p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
    color: #666;
}

.auth-links, .game-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.game-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 1200px;
}

.game-header {
    grid-column: 1 / -1;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.game-header h2 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.game-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.player-stats {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.player-stats h3 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.status {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.875rem;
}

.status.online {
    background-color: #d4edda;
    color: #155724;
}

.status.offline {
    background-color: #f8d7da;
    color: #721c24;
}

.game-actions {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.chat-section {
    grid-column: 1 / -1;
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.chat-messages {
    height: 300px;
    overflow-y: auto;
    border: 1px solid #ddd;
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
}

.message {
    margin-bottom: 0.5rem;
    padding: 0.5rem;
    border-radius: 4px;
}

.message-chat {
    background-color: #f8f9fa;
}

.message-info {
    background-color: #d1ecf1;
    color: #0c5460;
}

.message-error {
    background-color: #f8d7da;
    color: #721c24;
}

.players-list {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.players-list h3 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.player-item {
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    border-radius: 4px;
    border-left: 4px solid #ddd;
}

.player-item.online {
    border-left-color: #28a745;
    background-color: #f8f9fa;
}

.player-item.offline {
    border-left-color: #6c757d;
    background-color: #f8f9fa;
}

footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .game-container {
        grid-template-columns: 1fr;
    }

    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .game-info {
        flex-direction: column;
        gap: 1rem;
    }

    .auth-links, .game-links {
        flex-direction: column;
        align-items: center;
    }
}