.card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    animation: slideIn 0.3s ease-out;
}

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

.card h2 {
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.btn {
    flex: 1;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #f0f0f0;
    color: #333;
}

.btn-secondary:hover {
    background: #e0e0e0;
}

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

.btn-success {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.4);
}

.btn-info {
    background: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
    color: white;
}

.btn-info:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(23, 162, 184, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(220, 53, 69, 0.4);
}

.error-message {
    color: #e74c3c;
    margin-top: 15px;
    padding: 10px;
    background: #fee;
    border-radius: 8px;
    display: none;
}

.error-message.show {
    display: block;
}

.info-message {
    text-align: center;
    color: #666;
    margin-top: 20px;
    padding: 15px;
    background: #f5f5f5;
    border-radius: 8px;
}

.players-list {
    margin: 20px 0;
}

.player-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    margin-bottom: 8px;
    background: #f5f5f5;
    border-radius: 8px;
    transition: all 0.3s;
}

.player-item.host {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    border: 2px solid #ffc107;
}

.player-item.robot {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border: 2px solid #2196f3;
}

.player-item.ready {
    background: #d4edda;
    border: 2px solid #28a745;
}

.player-status {
    color: #666;
    font-size: 0.9em;
}

.host-controls {
    margin-top: 20px;
    padding: 15px;
    background: #f0f8ff;
    border-radius: 8px;
    border: 2px solid #667eea;
}

.host-controls h4 {
    margin-bottom: 15px;
    color: #667eea;
    text-align: center;
}

.deck-selection {
    margin-bottom: 15px;
}

.deck-selection label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

.deck-buttons {
    display: flex;
    gap: 10px;
}

.deck-btn {
    flex: 1;
    padding: 8px 12px;
    font-size: 14px;
}

.deck-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.player-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.player-name {
    font-weight: 600;
    color: #333;
}

.host-badge {
    background: #ffc107;
    color: #000;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8em;
    font-weight: 600;
}

.robot-badge {
    background: #2196f3;
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8em;
    font-weight: 600;
    margin-left: 4px;
}

.kick-btn {
    background: #dc3545;
    color: white;
    border: none;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8em;
    transition: all 0.3s;
}

.kick-btn:hover {
    background: #c82333;
    transform: scale(1.05);
}